Opel Astra H fault codes: description and interpretation

Author: Ivan Baranov

Has a sad icon in the form of a car with a key lit up on the instrument panel of your Opel Astra? Is the generator light on or off? It looks like there is some problem with your car. And to eliminate the malfunction, you need to read the error codes of the Opel Astra H. To do this, in normal mode, you can use a dealer scanner. But what to do if you don’t have the device at hand, and you don’t want to spend time and money on a trip to the dealer? Exit: deciphering error codes manually.

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How to read errors on Opel Astra H

The design of car electronic systems is complex and has its drawbacks. Often the standard “check engine” indicator is not displayed on the instrument panel. Consequently, the car enthusiast cannot correctly analyze the condition of the vehicle.

To view all available errors, you will need to read the information using special equipment. The car has a self-diagnosis mode, but due to its low efficiency, drivers prefer not to use it.

Reading errors usually looks like this.

• The car's ignition is turned on; if there is a manual transmission, the lever is moved to the neutral position.

• Next, you will need to connect a laptop with software or a special diagnostic scanner, similar to a dealer’s device. The connection occurs through a connector installed under the trim near the handbrake lever.

• After this, the diagnostic program starts on the scanner. Usually in a dialog box, the program asks you to enter the engine model, gearbox and body. Next you need to follow the developer's instructions.
• The computer begins to read software failures and errors. Once the procedure is completed, a coded list of problems is displayed on the screen.

On which cars is this problem most common?

The problem with code P2120 can occur on different machines, but there are always statistics on which brands this error occurs more often. Here is a list of some of them:

• Buick
• Chevrolet (Chevrolet Colorado, Equinox)
• Chrysler
• Ford
• Nissan
• Opel (Opel Astra, Vivaro, Zafira)
• Pontiac
• Renault (Renault Kangu, Megan)

You can sometimes encounter other errors with fault code P2120. The most common are the following: P1125, P2121, P2122, P2123, P2124, P2138.

Fault table

On the general decoding of the dashboard, the main faults are highlighted by numbers.

Only indicators are shown here. A detailed description of the errors is given below.

Two methods for finding out the fault code on a Zafira without a scanner

Demonstration of self-diagnosis on Zafira A

On Opel Zafira A and Opel Astra G after 2000, with an electronic gas pedal and a manual transmission, you can read errors without special equipment using two self-diagnosis methods.

For the first, the procedure is as follows:

If there are no errors, the light flashes without stopping and without pauses. If there are errors, the light bulb displays an error code. The code consists of 4 digits. Each number is issued separately. If the light blinks 1 time it is 1, twice it blinks 2 and so on, 10 times means zero. There is a pause between the numbers.

In our case (see video) the light blinks: 10 times, 3 times, 2 times and 5 times. What does P0325 mean? When connecting the OP-COM scanner, we make sure that the information read is correct.

Diagnostics without a scanner on a Zafira with automatic transmission is carried out using a different method.

We repeat the first 3 points of the previous version, namely:

the letters ECN (error code number) and error code number will appear on the dashboard instead of the odometer information about mileage . Codes, if there are several of them, will appear sequentially in the form of six-digit numbers. Then they will disappear and the mileage will appear again. So if you don’t have time to record, you’ll have to repeat everything again.

In this number, the first 4 digits will indicate the number of the error itself, and the next two will indicate its meaning. For example, code 161450 will indicate that there is an error in the operation between the immobilizer and the ignition key. If you saw only zeros on the scoreboard, then there are no errors .

How to do a self-diagnosis on an Opel Zafira using a paper clip

There is another method of self-diagnosis on Zafira A (reading errors without a scanner), which is used when the car does not have an electronic gas pedal . To implement it you need a paperclip or a piece of wire/wire. The procedure is as follows:

Each code will consist of 4 groups of flashes. First, one flash, which corresponds to the number “1”, then a pause and ten flashes, which corresponds to the number “0”. The total result is “10” - the code for entering the diagnostic mode (this code does not blink on all machines; sometimes error codes are immediately displayed). The pause between codes is longer than between numbers in the codes. Fault codes are issued in ascending order, 3 times each in a row. We count, write down the received codes and look at their decoding. But, keep in mind that the code allows you to determine only the system circuit.

When there were problems and you identified and eliminated them, the error code stored in the memory can be deleted on its own if the corresponding malfunction does not appear within 20 consecutive engine starts.

Source

Opel Astra H errors: decoding

The principle of reading faults is to designate them. Typically the code consists of five characters.

The first part is always a symbol.

• C – breakdowns associated with the car’s suspension;
• P – transmission and power plant malfunctions, while a car with a key may be displayed on the dashboard;
• B – body equipment is faulty;
• U – errors in electronic modules that indicate a failure of the ECU and similar systems.

Next comes a number from 0 to 3. The manufacturer's coding, tire number and other information that is not decisive for the master are indicated here. The third part of the code gives much more information and the essence of the problem.

1. The engine has some nuances with the air supply.
2. Same for the fuel system. Here the problem is often accompanied by an inadequate response to pressing the gas pedal.
3. The car has problems with the ignition system. The coils or other electronics may be malfunctioning.
4. The problem is in the additional control modules. For example, in the ESP system, ABS and others.
5. The carburetor unit or injector is faulty. The car's idle speed is unstable and the engine speed fluctuates.
6. Electronic errors.
7. Automatic transmission malfunction.
8. Similarly for the transmission units of the car.

The last two characters indicate a specific problem.

Due to the huge number of standard combinations and errors, the decoding of which can be found everywhere, including on the pages of technical literature that comes with specialized scanners, “exotic” encodings are listed below.

It is noteworthy that for most of the errors listed below there is no description.

Code 013004 - Astra H error

It can also be indicated as 13004. Indicates an open circuit in DC 1. The problem must be treated by replacing the sensor or repairing its wiring.

Error 161450

The transponder key is not correct.

Error P0170

The efficiency of the catalytic converter is too low. May also appear as:

• 11;
• 12;
• 017011;
• 17011;
• 17012.

The solution to the problem is to check the catalyst, sensor and its wiring.

010170 - error Opel Astra H

The power or control lines of the automatic transmission are damaged.

Error 30301

Multiple misfires in engine cylinders. It is necessary to check the air flow meter, ignition system and fuel line. The system may also display fault number 030301, which does not change the essence of the problem.

Error 1166

Appears after replacing the timing belt on a 2008 car; it can also be displayed as 001166. To fix the problem, you will need to check that the marks are installed correctly.

210111 - malfunction

The throttle motor is faulty or clogged. Usually it is enough to clean the mechanism from dirt and dust. In extreme cases, the device is replaced entirely.

Error 013604

The heating line of DC 1 has failed. Treatment consists of eliminating oxidation and restoring insulation.

U2105 - Astra H malfunction

Usually the car does not start - this indicates a CAN bus malfunction. To eliminate the problem, you will have to change all the electrics.

Error 970

There is damage in the ECU system. It may appear under the number 000970. To fix the problem, check the lines of the device.

Code 30401

The DPRV is faulty, there are problems with the wiring or the marks on the pulleys are knocked off.

Code 111306

The twinport position does not meet the system requirements. To fix problems, you will need to diagnose the ignition module.

53006

The cruise control device is out of order. Testing the device is carried out by diagnosing all component structures.

30201

Misfire detected in the first cylinder. It is necessary to diagnose the fuel, air and spark supply system to the engine. In some versions of the ECU, the error is indicated as 030201.

Error 3608

The oxygen sensor heater is faulty or damaged. To perform diagnostics, it is recommended to check the sensor line. Depending on the electronics version, there are also designation options:

• 003608;
• 03608.

161400

The connection between the immobilizer and the key chip is lost. To fix the problem, it is usually enough to replace the battery.

30101

The mass air flow sensor has failed or its power supply system has been damaged.

13602

The oxygen sensor is damaged or has failed. The entire system needs to be diagnosed.

Error 13504 Asters

The problem may also be indicated as 013504. Heating the oxygen sensor to the catalyst does not work correctly.

Error 1466

Malfunction of the engine camshaft solenoid valve. To correct the situation, it is enough to clean the contacts from oxidation and dirt. On some machines, the error appears as 001466.

Opel Astra H: error 001304

The camshaft sensor has failed or the sensor wiring is damaged. Actions similar to the point above.

111261 - error

The voltage at the DTVC is below the established norm. To fix the problem, you need to check the contacts and wiring, and also ring the sensor with a multimeter.

0773 61: Opel Astra N - error

The neutral gear on the automatic transmission disappears. To fix the problem, you need to clean the wiring contacts or check the automatic transmission.

P0773 62: error

Slipping of clutch C1 when disengaging the gear. The box needs to be shown to a specialist urgently. It is not recommended to climb into the structure yourself.

Error 212006

The gas pedal does not work correctly. It is recommended to clean the electronics contacts in the indicated area.

Error 1462

It may appear as 001462. The error indicates a malfunction of the DPRV.

Error 111606

The thermostat control circuits are low voltage. The circuits and lines of the sensor should be checked.

Error 13001

The first lambda probe has failed or the wiring contact is loose. It is recommended to check the entire sensor line for damage.

04205a

The catalytic converter is faulty, damaged or worn out. A complete replacement of the device is recommended.

Error 70405

The cruise control system needs to be checked. There may have been a power surge that caused the device to malfunction. You should also check the calibration of the device.

Error U 2139

The functionality of the ECU should be checked.

013611 - error Opel Astra H: decoding

The pre-catalyst oxygen sensor heater is faulty or the wiring is damaged. Can also fire number 13611.

111262

Problems with voltage at the intake manifold air sensor. Use a multimeter to check the resistance and current.

4205A

There are problems with the operation of the catalytic converter. It is recommended to test the device on specialized equipment. If the catalyst is clogged, the entire module is replaced. Also, some car enthusiasts prefer to cut out part of the exhaust system due to its high cost.

065070

The automatic transmission electronics are damaged. You should immediately show the car to a mechanic. If you delay with the problem, you may end up needing a gearbox replacement or serious repairs.

Error 161300

The first lambda probe has failed or is damaged.

Astra H: fault U0009 70

If the car stops and the indicated error appears on the dashboard, this indicates a serious malfunction in the operation of the CAN bus. You need to show the car to a qualified electrician.

Reasons for the error

Code P2120 may mean that one or more of the following problems have occurred:

• Open throttle position sensor circuit or poor electrical connection.
• The throttle position sensor wiring harness is open or shorted to ground or another wire.
• Corroded MAP or TPS connector.
• The throttle position sensor is faulty.
• Throttle return spring stuck.
• The engine control module (PCM) is faulty.

P0597

Direct disruption to the operation of the power plant cooling system. Usually the problem appears after replacing the antifreeze. It is recommended to diagnose the fluid flow control valve. If the latter sticks, it is changed completely.

Code 059701

Or 59701 has a similar meaning to 0597.

Code 59704

It is also indicated as 059704. The problem is similar to the above.

Error 59761

This error most often appears on z18xer units. The encoding can also be denoted as follows:

• 059761;
• 59 761.

Same value as P0597.

Fault 033504

Failure of the electrical circuits of the oxygen sensor. Often indicates:

• wiring damage;
• heating element failed;
• terminals are oxidized.

p0014

The crankshaft phase shifter valves are damaged or the integrity of their wiring is compromised. If they fail, everything changes along with the gears.

P1723

The automatic transmission control relay has failed or its wiring is damaged.

Error 33508

Damage to oxygen sensor No. 2. Also, the error is often indicated as 033508.

263838: what does it mean

This often occurs among those who like to replace the firmware and “fix” proprietary software. You should take the vehicle to the electronics specialist.

Fault code P1113 - Astra H

Increased voltage in the twinport controller circuit. You need to check the spark plugs, armored wires, distributor and ignition coil.

007506

The voltage in the solenoid valve circuits is too low. Wires and contacts should be checked.

48106

The radiator fan drive control line is faulty. For diagnostics and repairs, you will need to shake up the entire line from the ECU to the motor inclusive.

34004

The camshaft position sensor is damaged or faulty. The problem occurs extremely rarely, but when it occurs, the car begins to act up or refuse to start at all. The fault can also be found under number 034004.

P2103

There is no connection with the CAN-Bus bus, you should check the car for problems in the electrical circuits.

U2100 00

Usually the coding indicates problems with the electrical circuit contact of the generator set.

01345e

One of the oxygen sensors has failed or its wiring is damaged.

Error P1723

The automatic transmission control relay is faulty or damaged.

56471

A common problem in the cruise control system control circuits. To resolve the problem, you need to fully diagnose the device.

Error code P2182

There is a fault in the coolant temperature controller circuit. Usually the cause is a capricious motor vehicle. There may also be problems with the control unit. To understand the root of the problem, it is recommended to contact a specialist.

218217

DTOZH indicates boiling of antifreeze. If everything is in order with the liquid, you should diagnose the sensor and its suitable wire.

218213

A similar problem, but completely opposite. DTOZH does not indicate overheating of the power plant.

218214

Similar to the one mentioned above.

Error 1004

It is also displayed under the number 001004. It is hidden in problems with the camshaft controller. For a complete diagnosis, it is recommended to check the entire line of the device.

020102

Malfunction of fuel injectors. Specifically for the second cylinder. It is recommended to check the units using special equipment.

P1700

Transmission lever cables are damaged or overheated. The machine may run jerkily or jerk.

P0141

DC 2 after the catalyst has failed or the wiring is severely damaged. The signal from the sensor to the controller does not pass. Diagnostic tools may indicate a line break.

Error code 14104

Analogues:

• 014104;
• 014100.

The system indicates difficulties with the DK2 heater circuit.

1N5P

A typical encoding of those motorists who constantly forget about the timing of car servicing. Reminds you of the need for a procedure. After maintenance, the counter needs to be reset.

U 2103

There is no connection with the CAN-BUS bus. A thorough wiring inspection is required.

62103

Incorrect voltage inside the on-board network. If we consider it specifically, the indicator is too low. You should check the generator, voltage regulator, diode bridge. Sometimes the cause is oxidized contacts.

In some versions the car appears under No. 062103.

210300

The electric throttle actuator is damaged or completely out of order. The device must be removed and checked for faults.

112052

The contacts on the Hall sensor of the gas pedal are clogged or damaged. Everything needs to be disassembled and cleaned. After which the problem should go away.

Error 56003

Low voltage in the on-board network. May also appear as 056003. The solution may be the generator set or battery. In rare cases, cleaning the contacts helps.

Error P0136

The oxygen sensor heater has failed, is damaged, or has a faulty wiring. The highway needs to be carefully examined.

211965

The throttle control system has failed or is damaged. The system needs to be diagnosed.

Coolantlevel error

The letter fault accurately translates as: antifreeze level. The problem indicates that there is too little coolant in the radiator system. To fix it, just add fluid to the required level and restart the on-board computer.

Error 211808

Power cascade failure. Usually it is enough to clean the fuse contacts and terminals from oxides. After this everything should work.

00502

General malfunction of the ABS system. Control modules or drives are damaged. Often 005 02 jumps out after hitting a serious bump at high speed or extreme use of the braking system.

Р1735 00

The gearbox parameters have not been memorized. It is necessary to check the checkpoint brain and troubleshoot problems at the physical level.

Code 172304

Difficulties were discovered in controlling the automatic transmission. The machine needs the attention of specialists.

P0011 - error

Mistakes were made when replacing the timing belt. Most likely the craftsmen did not put the marks on the pulleys in the right places. The exact meaning is that the phase distribution of the power plant is disrupted.

030204

Multiple misfires of the fuel mixture in one of the cylinders. The entire system must be checked for damage or critical wear.

040274

There is an increased pressure in the exhaust gas recirculation system that exceeds the maximum permissible indicator.

212506

Gas pedal error. For treatment, remove the contact connector of the device and clean it. If everything is fine with them, the pedal is checked with a multimeter.

010006

The mass air flow sensor has failed or the wiring has broken. It is recommended to check the inspection hole in the intake manifold. Periodically, debris gets drawn into the system, which causes damage.

Fault b3649

Typical airbag module error. Usually the corresponding light on the dashboard lights up at the same time. To fix it, remove the cable and clean it of debris.

Fault 17000

The control cables of the automatic transmission shifter are damaged. Often the car jerks or picks up speed poorly.

4205A— malfunction

The catalyst is damaged or clogged. It may also indicate a breakdown in the housing or scattering of cells. May be indicated as 04205A, which means the device should be replaced immediately. But in domestic conditions, it is simply cut out of the main line by welding a piece of pipe of suitable diameter.

6800

Also designated as 006800 and indicates damage to the throttle valve. If the diagnostics has established the fact of wear, the entire assembly is replaced.

Error U2106

Open circuit on the transmission control module. To fix this, check the chain for damage and wear.

112008

The throttle position sensor is faulty or the wiring is damaged. The circuit must be checked in order.

030404

Malfunction of the ignition coil on cylinder 4. You will need to check the line completely; if the problem is in the coil, replace it entirely.

152364

There is a malfunction within the throttle control system. You need to carefully study the low-voltage wiring of the device and the control system.

011514

The coolant temperature sensor is reporting incorrect data. Also, the sensor may get stuck on one indicator. The damaged unit should be replaced and the wires checked.

U2201 00

CAN bus - no connection. This usually occurs after replacing the standard acoustics with a modified version. To fix the problem, you should unplug the radio at the software level.

013607

There are faults in the oxygen sensor circuit; it is recommended to check the line.

11514

The coolant controller is faulty or is producing incorrect data. The cause may be damaged wiring or sensor failure.

030101

Multiple misfires in the first cylinder. You should check the system, air flow meter, fine fuel filter, and correct installation of the phase distribution.

161600

Incorrect code received from the steering column control module. Often the cause is loose wiring contact.

Error P0705: Astra H

The automatic transmission selector position sensor is faulty and is sending the wrong signal. The problem often lies in the software or wiring.

068304

Found exclusively on diesel engines. The error indicates a break in the injector circuit of one of the cylinders.

011005

Malfunction of the intake air temperature sensor in the intake manifold. As a diagnostic, it is recommended to check the wiring and sensor. If there is a breakdown, the entire unit is replaced.

0014

Malfunction of camshaft phase shifters.

13601 - AstraH error: decryption

Lambda probe malfunction. Caused by damaged wiring or loose terminals.

P0420

There are difficulties in the performance of the catalytic converter. Usually caused by reduced patency of the device. If this is detected, the entire assembly is replaced.

P1607

Clutch control module error. To diagnose, you should open the module and check its software settings.

P1734

The exact value of the error “Set point adaptation not defined.” You will not be able to determine the cause of the failure on your own. You should contact specialists.

Error 119167

The pressure sensor inside the fuel tank is not working properly. Or there is damage to the wiring or contact group.

012170

The canister purge valve circuit is faulty. May appear as 12170.

Error 014070

The oxygen sensor is receiving an incorrect signal. Associated with sensor or wiring damage.

021911

Exceeding the permissible speed of the crankshaft of the power plant. If the firmware has not been touched, you should check the sensor wiring. If the software is broken, the problem is fixed at the software level.

010501

The fuel mixture pressure sensor in the air manifold is covered or its wiring is faulty.

Errors B0022, B0015

High voltage in the seat belt monitoring circuits for the front passenger and driver.

P1710

The automatic transmission oil temperature sensor is faulty. It often pops up when the transmission overheats.

010506

Malfunction of the intake manifold absolute pressure sensor circuit. The problem can be corrected by repairing the wiring or replacing the sensor.

Error Astra AS - 14 63

The camshaft timing valves are faulty, and there may also be something in the sensors.

Code P0335

The problem clearly indicates damage to the tachometer sensor or an open circuit.

CodeC0730

Without getting into complex decoding, the essence can be expressed in problems with the input speed sensor, in front of the gearbox.

P1405

Lack of feedback from the EGR valve. As a corrective measure, you should perform a complete diagnostic of the device, including wiring, sensor, etc.

041572

The secondary air injection system is faulty; the valve or sensor responsible for the device may have malfunctioned.

010807

The turbine boost control valve is faulty or its wiring is damaged.

Astra code АШ: 0 30 101

Misfire in one of the cylinders. The engine management systems, ignition and electrical systems should be checked.

20100

Problems with the ignition module. Problems are usually caused by poor contact or damaged wiring of the sensors.

P0171

A section of the fuel system of the first cylinder is faulty. May indicate loss of system integrity.

13611

The oxygen sensor after the catalyst is faulty or damaged.

022006

Malfunction of the throttle position sensor in position B. Cleaning the contacts or replacing the sensors usually helps.

011517

The coolant controller is faulty. It can shoot like 11517. To fix it, just replace the sensor.

Lambda probe error Astra H

With such problems, you should check everything from wiring to sensors.

118004

A common problem with the 1.3 diesel engine. Indicates a breakdown or failure of the fuel filter heater.

0501F0

Damage to the vehicle speed sensor. As a result, problems may arise with the operation of the speedometer.

048206

Also designated as 48206. Indicates a breakdown inside the control line and power supply for the head fan drive of the engine cooling system. For treatment, you will need to completely check the line.

017152

The fuel mixture is very lean. Accompanied by increased fuel consumption and engine overheating. To eliminate the sore, you need to check the fuel supply and air line.

P0014

The exhaust shaft phase shifter is faulty or damaged. The solution is to disassemble everything and clean it of dirt and carbon deposits.

59702 - error

Thermostat valve stuck. The unit is a maintenance-free part and, in case of damage, is replaced completely and entirely.

Error F: Astra H

Damage to the robot's control controller.

Airbag error on Astra H

It is recommended to check the contacts of the drive with the squib and the entire wiring.

Decoding codes

To decipher codes (fault codes for Opel Astra H), it is important to understand the conventional letter designations adopted by the manufacturer. Is it P, B, C or U .

• Code P – operation of the Opel Astra H engine and (or) automatic transmission.
• Code B – “body systems” (airbag, power windows, central locking, etc.).
• Code C – chassis system (chassis).
• Code U is a system of interaction between electronic units (for example, to the CAN bus).

Important: using the diagnostics described above, you only get errors of type P****. Faults of types C****, B**** and U**** can only be read using special diagnostic equipment!

For example, code 000970 is U 000970, that is, U0009 (symptom 70). Its reading (decoding) – no HS-CAN communication, bus shorted.

The second position (number) indicates:

• “0” (zero) – common for OBD II codes (OBD II codes are standardized fault identifiers);
• “1” and “2” (one and two) – year of the manufacturer;
• “3” (three) – reserve.

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The third position is the type of fault.

• “1” and “2” (one and two) – fuel system or air supply;
• “3” (three) – ignition system;
• “4” (four) – auxiliary control;
• “5” (five) – idle;
• “6” (six) – ECU or its circuits;
• “7” and “8” – transmission.

Positions 4 and 5 are the serial number of the error.

Description of errors

Reading and decoding errors Opel Astra H

The table below presents a list of some fault codes (codes and their interpretation) for the Opel Astra H in Russian. Of course, this is not a complete list, but just a small part of it. If you do not find the code you need in the table, we recommend using additional resources with a complete and constantly updated list of errors.

Checking errors Opel Astra H with pedals

To detect faults without using a special scanner, you can resort to a simple procedure. The only problem is that the on-board computer will not be able to show all the difficulties with high accuracy. Sequential diagnostics will only help determine the search area for the problem. The mechanical pedal test is performed like this.

1. Hold down the gas and brake at the same time.
2. After this, insert the key into the ignition. At the same time, do not start the car.
3. We wait a few seconds until a message appears on the dashboard.

On the automatic transmission everything is a little different.

1. Insert the key into the ignition and start the onboard circuits (we do not start the engine).
2. Press and hold the brake pedal.
3. Switch the gearbox lever to position D.
4. Turn off the ignition and release the brake.
5. Now hold down the gas and brake at the same time.
6. Turn on the ignition.
7. Wait a few seconds.

Instructions for verification

To correctly read fault codes on Opel Astra cars, there are several ways. Diagnostics using an adapter will allow you to get an accurate result, but you will need a laptop and software to perform it. The self-diagnosis procedure is performed without the use of third-party equipment, but when performing it, the type of transmission must be taken into account. The check process will be different for manual and automatic transmissions.

If everything is done correctly during the diagnostic process, the message ECN (Error), as well as combinations of faults, will appear on the display in the dashboard where the mileage is displayed. They are made in the form of six-digit numbers. If there are several problems in the operation of the engine and main systems, the on-board computer will show them in turn. When the fault demonstration procedure is completed, a code of six zeros will appear on the instrument panel. If the diagnostics showed a combination consisting only of zeros, then no problems were identified in the vehicle’s operation.

The first four characters displayed on the device are the fault code, and the remaining two digits are its description. If the diagnostics shows only five digits, then to decipher the malfunction you must add a zero before the code.

Manual transmission

To diagnose a car with a manual or robotic transmission, the following steps are performed:

1. The brake and gas pedals are pressed at the same time. The engine is not running and the ignition is turned off. In this position, you need to wait a few seconds.
2. The key is installed in the ignition switch.
3. The ignition system is activated. The gas and brake pedals remain depressed.
4. After a few seconds, a message appears on the dashboard. The error code is presented in the form of numbers. The resulting combinations must be rewritten on a piece of paper and subsequently deciphered.

Automatic transmission

For vehicles with automatic transmission, the diagnostic procedure is performed as follows:

1. The key is installed in the lock and the ignition is turned on. The car engine does not start.
2. Then your foot is placed on the brake pedal, it must be pressed and held.
3. The gear lever is set to mode D - Drive.
4. The ignition in the car is turned off, the brake pedal can be released.
5. Then the gas and brake pedals are clamped and held.
6. The ignition is activated, but the power unit does not start.
7. Then you need to wait a few seconds without releasing the pedal.

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Diagnostics with adapter

For a more accurate check, you can connect a computer or mobile device to the diagnostic connector. Direct connection of such equipment with the on-board computer is impossible, but there is an option to use universal OBD class adapters. It is desirable that the device supports Bluetooth operation. If diagnostics will be carried out using a mobile device, then software will be required; one of the universal utilities is the Torque application.

After downloading the software, you can begin diagnostics:

1. At the first stage, the adapter is installed in the diagnostic connector. In Opel Astra H cars, this output is located on the console between the gear knob and the parking brake lever.
2. To activate the adapter, the ignition system is turned on. The device will be powered from the car's electrical network.
3. After activation, the Bluetooth function is enabled on the mobile gadget. You need to search for compatible equipment; the adapter itself is indicated by OBD2. The connection procedure is performed using code 1234 or 6789. After synchronization, the software is launched on the device. When the program is activated, it will automatically connect to the adapter and to the vehicle's ECU system.
4. The next step will be diagnosis. The program will determine combinations of errors present in the memory of the on-board computer. If necessary, fault codes can be cleared. When the verification procedure is completed, it is recommended to rewrite and save the combinations in order to decrypt them correctly.

The channel “PC Repair!/IT_Comp_As” talked about performing diagnostics using a mobile device and Torque software.

Using the utility, one of the machine operating modes is selected. The car owner can independently change, remove or add the necessary controllers for testing.

With the standard settings of the utility in online mode, you can control the operation of the following parameters:

• the temperature of the intake air or antifreeze;
• number of crankshaft revolutions;
• accelerator pedal position;
• load parameter on the power unit;
• activated speeds;
• data from the oxygen controller and other regulators.

To add other controllers for testing, the following steps are performed:

1. You enter the main menu of the utility.
2. In the “Settings” window, select the “Manage Extra PIDs” section. The “Add predifined set” key is pressed.
3. A list opens where you can select the make of the car. To select an Opel, click on the item “Pontiac/GM/Opel/Vauxhall”. This will allow the car owner to access monitoring of various other parameters.

Universal adapters that work using the Bluetooth protocol allow you to check errors using other equipment in addition to mobile devices. The main thing is that it supports such a communication standard.

Diagnostics with a paper clip

Schemes of 10- and 16-pin connectors for the Opel Astra

Checking with a paper clip allows you to determine malfunctions in the ABS anti-lock braking system. If problems occur in the operation of this unit, a light indicator appears on the control panel and the device itself turns off. To activate the diagnostic mode of this system, you need to close two contacts at the output using a paper clip or a piece of wire. The contact elements to be closed are shown in detail in the photo. The connector itself is located in the engine compartment of the car.

After closing the contacts, the ignition is activated and the light indicator on the device will show the problem code, if it is in memory. If the car is equipped with a sixteen-pin output, then a paper clip or a piece of wire closes elements numbered 5 and 6. If there are no malfunctions in the ABS system, then the Check Engine symbol on the dashboard will blink and go out. If there are problems, the on-board computer will display a four-digit combination in a series of blinks.

There is a short blink in each series of code. A longer pause is used to separate faults from each other. All combinations are repeated three times, and then the next code comes. Failures are displayed on the dashboard in ascending order. After completing the troubleshooting cycle, there will be a pause, and then all the codes will repeat again.

When diagnosing faults in an Opel Astra, you need to close the correct contacts with a paper clip to prevent damage to the on-board computer.

User Konstantin Pr0gra2Mer spoke in detail about diagnosing all systems using a paper clip.

How to reset errors on an Opel Astra H yourself

The most effective reset is not done with pedals. This way you can only clear certain codes and remove illuminated icons on the dashboard. Without a special scanner and the help of a computer, this will be impossible. The sequence of actions looks like this.

1. Connect the PC to the vehicle diagnostic connector installed near the handbrake lever.
2. Insert and turn the key in the ignition - do not start the engine.
3. Launch the appropriate program on your computer and follow the instructions. The sequence of actions may differ depending on the available software.
4. After this, sequentially disconnect the equipment from the machine and restart the engine.

Car diagnostics

If you are the owner of an Opel Zafira, then you yourself can diagnose the vehicle to identify breakdowns . Of course, this can be done using specialized equipment, but this does not always make sense. Especially if it is possible to independently check the on-board computer. It should be noted that if you check the car system for breakdowns with your own hands, you will see codes that are slightly different from those that the technician will see when checking with specialized equipment.

So, how can you diagnose a car yourself? The instructions differ for cars with automatic and manual transmissions.

For manual transmissions

The ECN icon that lights up on the instrument panel of your Opel indicates the presence of errors

For automatic transmissions

If you did everything correctly, the ECN message and a fault code will appear on the speedometer, where the vehicle’s mileage is indicated. By the way, ECN is translated as Error code Number. Some people confuse this abbreviation with ESP, which means exchange rate stability system, but this is incorrect. In any case, whether you have an automatic or manual car, the error codes will be the same.

Error code on the instrument panel resulting from self-diagnosis

Also note that when pressing the pedals it is important that the limit switches are activated. That is why you don’t need to press the brake too hard, with medium force, and you need to press the gas to the floor until a click appears. Having done everything correctly, you will see fault codes. The first four digits of the combination indicate the failure code, the next two - its meaning. For example, breakdown 161450 indicates a malfunction in the functioning of the circuit between the ignition key and the immobilizer.

During self-diagnosis, fault codes will be displayed automatically, one after another.

Can you diagnose an Opel Zafira yourself?

Carrying out car diagnostics yourself

To carry out diagnostics, you need to perform some steps, which differ for vehicles with manual and automatic transmission.

For manual transmission

For a manual transmission, the following sequence of actions should be performed:

Photo gallery

For automatic transmission

To diagnose an Opel Astra N with automatic transmission, the steps are slightly different:

When we depress the pedals, you need to press the brake with medium effort, and press the gas pedal all the way until you hear a click, this is necessary for the limit switches to work (the author of the video is VIDEO ZAG).

If there are several faults, the codes will appear one after another. At the end of the list a code of 6 zeros will be displayed. If zeros appear immediately, this indicates that there is no problem. The fault code is in the first four digits, the last two are encrypted with the meaning of the fault. If the number of digits is 5, then to decrypt you need to add a zero in front.