Error number 8 in Chevrolet Niva, how to fix it

How is self-diagnosis performed?

Most motorists prefer to regularly undergo computer diagnostics of their cars. If you do not have the opportunity to visit a service center or do not have a scanner to check the car, you can do otherwise: run the on-board computer diagnostic program. To do this you need to do the following:

1. Press the partial reset button on the odometer and at the same time turn the key into the ignition.
2. If you did everything correctly, the arrows on the speedometer and indicators will begin to move along the stairs.
3. Press the reset button again. The display will show the current firmware version of the on-board computer. Next, you need to repeat the action with the reset button so that the bookmaker displays the presence of errors in the system. If present, the corresponding numbers will be displayed.

This diagnostic will not take long; you can quickly check the Chevrolet Niva system. If the number 8 appears on the display, do not worry - an error with the number 8 in most cases is not serious, you just need to check individual components of the car.

Resetting errors on Chevrolet

If malfunctions are found in the operation of certain systems, then the first thing to do is to correct them. If after repair the codes remain in memory and do not disappear, then you can eliminate them yourself.

There are several options for resetting errors:

1. Clear codes by disconnecting the battery terminals. Open the hood and loosen the bolts on the clamps, then disconnect the alligator clips. Wait about one minute, then connect the crocodile clips into place.
2. Using the on-board computer. The device has a special function for this. To delete the code, go to the “errors” section in the main menu, then press the middle key on the panel. You will hear a beep and dashes will appear on the computer display. If they exist, then the errors have been successfully removed from memory.
3. Resetting can be done using the odometer button. You need to hold it down for five seconds. About 15 seconds will pass, after which the numbers will appear on the display. We wrote about errors during self-diagnosis at the beginning of the article, but if the number 0 appears on the display, then there are no problems with the operation of the sensors, engine and other systems in the car.

Car diagnostics

Diagnostics of the engine and other systems and units in Chevrolet Niva, Cobalt, Lacetti, Lanos, Captiva, Cruz, Aveo 2004, 2005, 2010, 2012 and other years of production allows you to quickly determine the malfunction. Thanks to this, the car owner can prevent more serious damage. The errors themselves when diagnosing from a laptop or on a VDO display or other factory dashboard will be different. In the first case, the car owner receives the most accurate information about breakdowns, which allows them to correctly decipher and eliminate faults. Error combinations will be four-digit.

During self-diagnosis on the on-board computer, the status on the instrument panel of a VAZ 2123 or Chevrolet Tahoe, Orlando, Blazer, Lanos, Niva, Lacetti, Cruz, Captiva, Epica, Aveo in the T250 and T300 body, faults are displayed in two-digit format. Instead of combinations, messages may appear on the display to warn motorists.

Pressing the odometer button on the dashboard

How to do it yourself?

There are two ways to check your Chevrolet for errors: through self-diagnosis or using additional equipment or a computer. In order for the on-board computer to check for malfunctions, you need to press and hold the button on the odometer to reset the daily mileage and turn the key in the ignition. This will cause the needles on the speedometer and gauges to move along the stairs. And when you press the button again, the ECU will show a message on the display about the firmware version being used. After the next press, combinations of problems, if any, will appear on the screen.

What codes may appear on a Chevrolet Niva after self-diagnosis:

• 23-25 ​​- intake air temperature is not normal;
• 55 – the load on the power unit is too high;
• 2 – a break was detected in the electrical circuit of the fuel level regulator in the tank;
• 1 – microprocessor does not work properly;
• 4 – an increase in the voltage level in the vehicle’s on-board network of more than 16 volts, diagnostics of the battery and generator devices is required;
• 61 – the oxygen controller gives incorrect readings.
• 44-45 – incorrect composition of the combustible mixture;
• 49 – The computer registers a loss of vacuum;
• 52 – The ECU has corrected the RAM error;
• 14 – the ECU has received a signal that the coolant is overheating, this can lead to the engine boiling;
• 19 – the ECU received a signal about incorrect operation of the crankshaft, it is recommended to check the controller;
• 42 – The computer signals problems during startup;
• 24 – the vehicle speed impulse is not received on the dashboard;
• 54 – the octane corrector controller does not respond;
• 13 – the control unit does not receive a signal from the lambda probe;
• 33-34 – The ECU receives incorrect air flow data;
• 53 – the control module does not receive an impulse from the exhaust gas regulator;
• 8 – the voltage in the Chevrolet electrical network is low, the same control actions are performed;
• 41 – an incorrect signal is received from the phase regulator or camshaft sensor;
• 35 – the power unit does not work at idle;
• 43 – incorrect pulse from the knock sensor;
• 21-22 – the throttle valve is in the wrong position;
• 12 – control indicator does not work properly;
• 27-28 – the control unit reports violations in the level of exhaust gases;
• 15 – the operating temperature of the antifreeze in the cooling system is too low;
• 51 – ROM malfunction;

Self-diagnosis

Without going into details of the operation of all electronics, we note that the functioning of all vehicle systems is “monitored” by an electronic control unit (ECU).

It receives information from numerous sensors. Like any computer, the ECU requires software called firmware. This firmware is capable of analyzing indicators received from sensors, comparing them with normal parameters, identifying errors and storing these errors in memory.

Carrying out self-diagnosis

In the Chevrolet Niva, as in some other cars of the VAZ family, some parameters can be displayed on the VDO dashboard. It is often called an integrated on-board computer.

Testing is started by first pressing the daily mileage reset button and simultaneously turning the ignition key.

All instrument needles begin to move, which indicates the beginning of the testing process. Pressing the same button once will cause the firmware version to appear on the display, and pressing it again will give us a reading called an error code.

Panel codes should not be confused with ECU codes, which are diagnosed by external devices.

What does error 8 mean?

In the table for decoding error codes of the on-board computer, error number 8 indicates that there is low voltage in the electrical network of your Chevrolet. To get rid of it, you need to do the following:

• check the battery charge level;
• carry out diagnostics and, if necessary, repair the generator.

Most often, error 8 appears due to problems with the battery. Over time, it may lose its capacity and produce a voltage below 8 V, which is necessary for the normal operation of the electrical network and vehicle sensors. Similar procedures are performed when the mains voltage is too high.

If you think the on-board computer is not generating an error message because of a problem, you can check its readings. To do this, remove the negative terminal from the battery for 10 minutes, then connect again. If there are no problems, the error on the dashboard will disappear.

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Comments 16

Everything is written correctly, a tidy error can be reset by pressing and holding the daily mileage button and turning on the ignition, it does not affect driving performance.

“And I repaired you, repaired you. Again, again, again. Oh, I’ve been toiling with you for a long time. My mistake number five"