Standard error codes for Opel Insignia are divided by the manufacturer into several segments. Here there are the usual malfunctions of the self-diagnosis system (OBD1), and breakdowns that appear on the screen of special diagnostic equipment (OBD2). In the first option everything is extremely simple. Errors occur in order and are represented by a one or two-digit code. If the number 16 or another two-digit symbol lights up on the on-board display, there are two problems added together. The number 12 may indicate that the car is overloaded and problems numbered 3 and 9.
For the OBD2 module, special instructions and decoding are used. In the photo below you can see what parts a fault usually consists of and how to understand its purpose.
What does error code U0073 mean?
Code U0073 means “Control module 'A' communication bus is off.
Computers in modern vehicles (hereinafter referred to as units) interact with each other via a data bus. This bus is called a controller area network (CAN). CAN is a two-wire bus consisting of CAN High and CAN Low. CAN High - has a high data transfer rate of 500 Kbps. CAN low - with a low data transfer rate of 125k bps. Information transfer between the two buses is carried out by the gateway module.
Control units are connected to the CAN bus in parallel. Data transfer between blocks is carried out sequentially, one bit at a time. This is called serial communication. Each bus has a termination resistor.
If there is a communication problem on the CAN bus, the system will register a diagnostic trouble code (DTC). Code U0073 means that one or more modules cannot communicate correctly on the CAN 'A' bus. Depending on the may refer to either the CAN High bus or the CAN Low bus.
From english:
Decoding the error U0073 from Toyota: Throttle Actuator Control Throttle Body Range / Performance
Make:
Toyota
Code:
U0073
Definition:
Throttle Actuator Control Throttle Body Range/Performance
Description:
Monitor runs whenever the following DTCs are not present: None System guard: ON System guard is set when following conditions are met: Throttle actuator: ON Throttle actuator duty calculation: Executing TP sensor: Fail determined Throttle actuator current cut operation: Not executing Throttle actuator power supply: 4 V or more Throttle actuator: Fail determined
Cause:
- ETCS
- ECM
How to Diagnose and Fix Error U0073
Perform pre-check
Sometimes U0073 may appear intermittently as a result of a low battery. Remove the code and see if it returns. If the error appears again, then the next step is a visual inspection of the wiring. An experienced specialist can visually identify broken wires or lack of contact. If the source of the problem is found, the problem should be repaired and the error code cleared. If nothing is found, you need to check the technical service bulletins (TSBs). TSB is the vehicle manufacturer's recommended diagnostic and repair procedures. Finding the appropriate bulletin can significantly reduce diagnostic time.
Check if there is a malfunction in the control unit.
After a preliminary check, you need to make sure that there are no faults in the vehicle control unit. The first step in this direction is to check for any other stored module-specific error codes. For example, a U0100 code may also be stored, indicating a communication problem with the powertrain control module (PCM).
Then the modules are interrogated using a diagnostic scanner. The scanner connects to the vehicle via the built-in diagnostic port. Once connected to the car, the scanner becomes another module in the network and exchanges data over the network. The scanner will then poll the remaining modules, asking for their status to see which ones are working correctly.
Any module that does not respond is most likely faulty or has a wiring problem. Lack of communication does not necessarily mean the module is faulty. The module may not have power or ground. Or it may need to be reprogrammed.
Then you need to disconnect the modules from the network one by one. If disconnecting a specific module restores the CAN bus, then the problem is with the module itself or its circuit.
Checking the CAN bus
The initial check of the integrity of the CAN bus is carried out through the diagnostic port using a digital multimeter (DMM). By connecting a multimeter to the CAN High and CAN Low contacts of the diagnostic port, you can detect opens, shorts and high resistance in the CAN bus.
The DMM on the diagnostic port can also be used to test the two CAN bus termination resistors. Typically, if one of these resistors fails, the bus will still work. But if both do not work, the bus stops working. A multimeter reading of 60 ohms indicates that the resistors are intact.
Symptoms of P1684?
Check Engine Light
The first sign of P1684 is that the Check Engine light comes on. This may mean that you will experience engine problems. As stated earlier, this does not necessarily mean the battery is poorly connected. This may be the first sign of further error codes.
The control unit controls many engine functions such as ignition and air/fuel mixture. It is not recommended to simply disconnect the battery to clear the error until you have checked all potential problems.
Faulty ROM/KAM (read only memory)
All PCM information is stored on the KAM chip. This contains information about idle speed, air/fuel mixture, and other factory default settings. When the battery is disconnected, the chip goes to default settings. If your car has other problems, P1684 will come back again.
PCM conducts a series of self-assessment tests that include emissions tests. If you try to clear the error code before testing, you may have higher emissions than normal.
The PCM also controls the Transmission Control Module (TCM). Due to a power failure, the TCM may not operate properly. This is because disabling the PCM resets the transmission settings and requires the vehicle to relearn itself.
Once the error is cleared after 50 cycles, you will have to wait until the vehicle has been driven for 50-100 km for the TCM to reset the transmission again.
Loss of power to the PCM may affect the Body Control Module (BCM). If the problem is not corrected, it may cause the BCM to stop completely.
A failure of the BCM may cause other vehicle modules to shut down. A power interruption can also cause the steering wheel angle sensors to malfunction.
Later this can cause problems with stabilization, even leading to an accident. The steering sensor can be connected to the anti-theft system. In case of failure, you may face unauthorized entry into the vehicle.
Note for error U0073
Diagnosis of error U0073 is carried out with normal voltage in the on-board network and the vehicle is running.
Scan the tool into the data connector port under the dash and try to read the codes. The diagnostic tool should turn on when connected. If not, check the fuse for DLC and retest. If DTC U0073 is present, check which codes, if any, are also present. This can help provide a starting point for testing. If there is an associated TCM code loss of communication, begin testing in the TCM. The same goes for ABS, BCM and other modules with codes present along with DTC U0073. Set the correct resistance on the data line connector. Locate the CAN bus communication pins on the DLC using your vehicle's electrical diagram. With your DVOM, probe the two pins, measuring the resistance (ohms). The standard resistance for this test is approximately 60 ohms and should remain stable. Monitor resistance throughout the diagnosis for fluctuations, indicating when you have discovered the source of your communication problem. Checking for Twisted CANbus Wires Start searching for the source of your code by checking for opens or loose connections that could cause high resistance by setting DTC U0073. If there was a specific code associated with a module along with U0073, start with the module for that system and work your way back. Gently but firmly wiggle the wires and connectors while monitoring the resistance of your DVOM. The resistance should remain stable if the circuit is healthy. If there is fluctuation in resistance, you have found a damaged circuit. Find a break in the wiring insulation. Perform solder repairs and protect with weatherproof heat shrink. Clear DTCs and retest. Check the condition of the connectors Often water can penetrate into the connectors and harnesses and cause corrosion. Corrosion causes poor connections and high resistance, intermittent or constant, occurs. Disconnect the connectors on the CANbus circuit and check for water or corrosion. Clean the connectors and apply dielectric grease to prevent recurrence. If the connector pins are damaged, connect a new connector. Connect all connectors securely, making sure the latches are locked.
Standard error codes for Opel Insignia are divided by the manufacturer into several segments. Here there are the usual malfunctions of the self-diagnosis system (OBD1), and breakdowns that appear on the screen of special diagnostic equipment (OBD2).
In the first option everything is extremely simple. Errors occur in order and are represented by a one or two-digit code. If the number 16 or another two-digit symbol lights up on the on-board display, there are two problems added together. The number 12 may indicate that the car is overloaded and problems numbered 3 and 9.
For the OBD2 module, special instructions and decoding are used. In the photo below you can see what parts a fault usually consists of and how to understand its purpose.
Why doesn't self-diagnosis always work?
Many drivers, faced with the capabilities of their car, think that they will never need ]service centers[/anchor] in the field of vehicle diagnostics. It would be good, but electronic devices operating on a car are not yet able to replace a professional person.
We are in no way encouraging you to just go to a car service center, where you will have to pay a certain amount of money for diagnostics, moreover. Just keep in mind that you cannot rely 100% on the computer. Electronics sometimes glitch; it may not show a complete malfunction, but rather the consequences of a malfunction. You shouldn’t immediately run for a new spare part; any code shown on the screen needs to be analyzed.
Deciphering error codes
Depending on the configuration and year of manufacture of the car, there is only one place on the instrument panel where error and malfunction symbols are displayed - the on-board computer display. The module can be presented as a narrow monochrome strip, or as a full screen.
Opel Insignia: error 3
Code 16: Opel Insignia
The code indicates a problem with the wiring of the brake lights. Burnt-out lamps or damaged wiring may be to blame here. Often the cause is a blown fuse.
Code 18
There are problems with the low beam of the left headlight. It is recommended to check the appropriate fuse and bulb.
Fault 20
The problem is similar for the right headlight.
Error 35
The battery in the remote control is dead. Replace the power supply and reboot the system module.
Fault 55
Pops up when the diesel particulate filter is damaged or clogged. The car may lose power and fuel consumption increases. To carry out repairs, you will need to replace the element or cut out the soot and flash the car.
Code 59
There are system problems in the on-board equipment. The driver's door window should be opened and closed. If the manipulations do not help, reboot the bookmaker.
Code 60 is on
Same for the front passenger door.
Error 65
The standard code tells the driver that while parked there was an attempt to break into one of the doors or the engine compartment lid.
Code 79: Insignia
The problem is accompanied by a blinking or constant burning of the pressure lamp in the engine lubrication system.
Indicates insufficient oil level in the crankcase of the power plant.
Error 82 Insignia: how to remove
The encoding doesn't indicate the problem. Its purpose is to notify the driver of the need to change the engine oil as soon as possible. To reset the problem, you must undergo maintenance and update the data in the on-board computer.
Insignia: code 84
The performance of the power plant has been forcibly reduced. This is due to software errors, problems within the ignition and fuel supply systems.
Code 89
The problem is inside the cooling system. On most trim levels, the breakdown is hidden in the thermostat.
Insignia: code 128
Typical for those who like to constantly look under the hood. Indicates that the engine compartment cover has been opened. If you turn off the ignition, close the lock and restart the engine, the malfunction will have no consequences.
Fault 145
The standard immobilizer does not work correctly. The breakdown may be accompanied by a characteristic sound from under the hood while driving.
U0073 - Insignia error
The transmission control module is not working properly. The bottom line is that there is no contact between individual wires. To carry out repairs, treat the contact groups with sandpaper and remove all oxides. You will need to tighten the visible terminals. It is recommended to treat the contact group with special oil.
U0121 - error
Indicates similar problems with the ABS control unit. Contacts are checked up to the sensors.
Malfunction U0139
A typical breakdown for owners whose cars drive on bad roads. The error indicates a lack of communication with the suspension control unit. The problem does not affect the driving characteristics and can be eliminated by standard diagnostics.
P0014 - error
The problem is in the camshaft system. Usually there is an insert indicating directly the problem.
P0016 - error
The information coming from the camshaft and crankshaft does not match. Here the sensors may be damaged or the marks on the mechanism may be lost.
Insignia 2 0 diesel: error P0336
Malfunction in the DPKV control circuit. The sensor is non-separable and cannot be repaired/maintained. If the check reveals a sensor failure, it is replaced entirely.
P015B - malfunction
Incorrect operation of the fuel supply system. This happens after refueling. The car begins to act up due to the filling of low-quality fuel or gasoline of a different brand with a different octane number.
The procedure is suitable as a repair.
- Fill the tank full.
- Remove about a quarter of the fuel and top up the level again.
- Reboot the on-board computer.
After rolling out 1-2 tanks, the code will disappear - the machine will adapt to the type of fuel supplied.
Error P0299
Breakdown P1101
There is a problem with the fuel mixture intake system or the ventilation valve is damaged. Replace the insert using only original parts.
Code P2187
Excessively lean fuel mixture. It is recommended to check the system.
P2261: error - solution to the problem
AFL Insignia service: what does it mean?
Module responsible for adaptive external lighting. The device allows you to move the headlights in the direction of the steering wheel. Usually the adaptation fails suddenly, although everything else works properly, the optics do not move.
Stabilitrak - error
Malfunctions within the vehicle stabilization system. The ABS module acts as a provocateur.
Four-wheel drive malfunctions
All-wheel drive errors indicate problems in the torque distribution system to the wheels. Connect a diagnostic scanner to more accurately determine the location of the fault. Experienced specialists do not recommend performing repairs yourself. To perform the work correctly, you must contact a qualified technician.
For a car, the most common problems are those associated with a malfunction of the remote control or the fuel pump control module. On the dashboard these are errors like P2135 and 0627.
Check the intake and throttle systems in particular, the fuel lines and their pumping units. The situation is aggravated by the fact that problems can occur even in the presence of light contamination.
Troubleshooting Check Engine
In order to reset the check engine, Chevrolet Cruze car owners recommend removing the negative terminal from the battery for 10 minutes. If a false error occurs, the ECU independently eliminates the “Check engine” icon according to one of three established algorithms:
Fault with low risk of false alarm:
Malfunction with an average risk of false lightning of the check
High risk problem “Check engine”
If the “Check Engine” icon lights up or blinks again after a reset, then you need to find the reasons for its appearance. Otherwise, the extinction of the check will only be temporary. In addition, the components of the power unit will be subject to increased wear. Failure to report problems may result in costly major repairs.
How to count errors on Insignia
Depending on the year of manufacture and equipment of the machine, users are offered two methods for diagnosing problems without attaching additional equipment.
Mechanically, the sequence of actions is as follows:
- insert the key into the ignition;
- simultaneously press the gas and brake pedals;
- turn the key in the lock, but do not start the engine;
- do not give up the pedals for another 5-6 seconds.
On an automatic machine, the principle of operation is slightly different, but the essence remains the same:
- insert the key into the ignition switch and turn it to position 2;
- press and hold the brake pedal;
- Next you need to move the selector to the Drive position;
- turn off the ignition and release the brake;
- press the gas and brake at the same time and hold;
- turn on the ignition.
If everything is done correctly, the standard information on error codes will be displayed on the device.
conclusions
Insignia failure codes can be read and decrypted without the help of specialists. The self-diagnosis program is simple and intuitive to understand.
Specialization: Graduated from the State Automobile University, worked for 20 years at GAZ-56, now I drive a Zhiguli.
Standard error codes for Opel Insignia are divided by the manufacturer into several segments. Here there are the usual malfunctions of the self-diagnosis system (OBD1), and breakdowns that appear on the screen of special diagnostic equipment (OBD2).
In the first option everything is extremely simple. Errors occur in order and are represented by a one or two-digit code. If the number 16 or another two-digit symbol lights up on the on-board display, there are two problems added together. The number 12 may indicate that the car is overloaded and problems numbered 3 and 9.
For the OBD2 module, special instructions and decoding are used. In the photo below you can see what parts a fault usually consists of and how to understand its purpose.
Check Chevrolet Cruze
The Chevrolet Cruze has electronic engine control. Thanks to this, it is possible to monitor the state of the power plant. In case of problems with the engine and related systems, the “Check engine” indicator lights up.
Thanks to this, the car owner has the opportunity to detect a malfunction in time and eliminate it. This allows you to avoid costly repairs to the power plant. Therefore, you should not delay diagnostics if the check light comes on, even if the car continues to drive normally.
Deciphering error codes
Depending on the configuration and year of manufacture of the car, there is only one place on the instrument panel where error and malfunction symbols are displayed - the on-board computer display. The module can be presented as a narrow monochrome strip, or as a full screen.
Opel Insignia: error 3
Code 16: Opel Insignia
The code indicates a problem with the wiring of the brake lights. Burnt-out lamps or damaged wiring may be to blame here. Often the cause is a blown fuse.
Code 18
There are problems with the low beam of the left headlight. It is recommended to check the appropriate fuse and bulb.
Fault 20
The problem is similar for the right headlight.
Error 35
The battery in the remote control is dead. Replace the power supply and reboot the system module.
Fault 55
Pops up when the diesel particulate filter is damaged or clogged. The car may lose power and fuel consumption increases. To carry out repairs, you will need to replace the element or cut out the soot and flash the car.
Code 59
There are system problems in the on-board equipment. The driver's door window should be opened and closed. If the manipulations do not help, reboot the bookmaker.
Code 60 is on
Same for the front passenger door.
Error 65
The standard code tells the driver that while parked there was an attempt to break into one of the doors or the engine compartment lid.
Code 79: Insignia
The problem is accompanied by a blinking or constant burning of the pressure lamp in the engine lubrication system.
Indicates insufficient oil level in the crankcase of the power plant.
Error 82 Insignia: how to remove
The encoding doesn't indicate the problem. Its purpose is to notify the driver of the need to change the engine oil as soon as possible. To reset the problem, you must undergo maintenance and update the data in the on-board computer.
Insignia: code 84
The performance of the power plant has been forcibly reduced. This is due to software errors, problems within the ignition and fuel supply systems.
Code 89
The problem is inside the cooling system. On most trim levels, the breakdown is hidden in the thermostat.
Insignia: code 128
Typical for those who like to constantly look under the hood. Indicates that the engine compartment cover has been opened. If you turn off the ignition, close the lock and restart the engine, the malfunction will have no consequences.
Fault 145
The standard immobilizer does not work correctly. The breakdown may be accompanied by a characteristic sound from under the hood while driving.
U0073 - Insignia error
The transmission control module is not working properly. The bottom line is that there is no contact between individual wires. To carry out repairs, treat the contact groups with sandpaper and remove all oxides. You will need to tighten the visible terminals. It is recommended to treat the contact group with special oil.
U0121 - error
Indicates similar problems with the ABS control unit. Contacts are checked up to the sensors.
Malfunction U0139
A typical breakdown for owners whose cars drive on bad roads. The error indicates a lack of communication with the suspension control unit. The problem does not affect the driving characteristics and can be eliminated by standard diagnostics.
P0014 - error
The problem is in the camshaft system. Usually there is an insert indicating directly the problem.
P0016 - error
The information coming from the camshaft and crankshaft does not match. Here the sensors may be damaged or the marks on the mechanism may be lost.
Insignia 2 0 diesel: error P0336
Malfunction in the DPKV control circuit. The sensor is non-separable and cannot be repaired/maintained. If the check reveals a sensor failure, it is replaced entirely.
P015B - malfunction
Incorrect operation of the fuel supply system. This happens after refueling. The car begins to act up due to the filling of low-quality fuel or gasoline of a different brand with a different octane number.
The procedure is suitable as a repair.
- Fill the tank full.
- Remove about a quarter of the fuel and top up the level again.
- Reboot the on-board computer.
After rolling out 1-2 tanks, the code will disappear - the machine will adapt to the type of fuel supplied.
Error P0299
Breakdown P1101
There is a problem with the fuel mixture intake system or the ventilation valve is damaged. Replace the insert using only original parts.
Code P2187
Excessively lean fuel mixture. It is recommended to check the system.
P2261: error - solution to the problem
AFL Insignia service: what does it mean?
Module responsible for adaptive external lighting. The device allows you to move the headlights in the direction of the steering wheel. Usually the adaptation fails suddenly, although everything else works properly, the optics do not move.
Stabilitrak - error
Malfunctions within the vehicle stabilization system. The ABS module acts as a provocateur.
Four-wheel drive malfunctions
All-wheel drive errors indicate problems in the torque distribution system to the wheels. Connect a diagnostic scanner to more accurately determine the location of the fault. Experienced specialists do not recommend performing repairs yourself. To perform the work correctly, you must contact a qualified technician.
For a car, the most common problems are those associated with a malfunction of the remote control or the fuel pump control module. On the dashboard these are errors like P2135 and 0627.
Check the intake and throttle systems in particular, the fuel lines and their pumping units. The situation is aggravated by the fact that problems can occur even in the presence of light contamination.
Diagnostics of a Chevrolet Cruze to identify the causes of a lit check
There are several ways to determine the cause of the “Check engine” light on a Chevrolet Cruze. The main ones are:
Obvious engine damage can be detected by inspecting the engine compartment. For example, such malfunctions are:
Deviations in the engine oil level can also be diagnosed without the use of special equipment.
Instead of using a diagnostic scanner, you can use a smartphone with a special application installed. It should be taken into account that counting errors is not enough to identify a breakdown. It is important to correctly decipher the received data.
How to count errors on Insignia
Depending on the year of manufacture and equipment of the machine, users are offered two methods for diagnosing problems without attaching additional equipment.
Mechanically, the sequence of actions is as follows:
- insert the key into the ignition;
- simultaneously press the gas and brake pedals;
- turn the key in the lock, but do not start the engine;
- do not give up the pedals for another 5-6 seconds.
On an automatic machine, the principle of operation is slightly different, but the essence remains the same:
- insert the key into the ignition switch and turn it to position 2;
- press and hold the brake pedal;
- Next you need to move the selector to the Drive position;
- turn off the ignition and release the brake;
- press the gas and brake at the same time and hold;
- turn on the ignition.
If everything is done correctly, the standard information on error codes will be displayed on the device.
