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2022

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How to solve the fault of automobile sensor


1. Clean the wheel speed sensor. The wheel speed sensor will be dirty when the vehicle passes through waterways and muddy roads. It is necessary to clean the wheel speed sensor.

2. Add oil. There is too little oil, which causes sensor failure, and oil needs to be added.

3. Change the oil. If the oil is too dirty or viscous, replace the oil with good quality. When changing the oil, it is necessary to jack up the front end of the vehicle, remove the bottom guard of the vehicle, unscrew the oil drain screw on the oil pan, drain the old oil, and add new oil from the oil filler.

4. Repair the oil pipe. If the oil pipe leaks, the oil pipe needs to be repaired.

5. Repair the water temperature sensor. If the engine fault light is always on and the water temperature display value at ON gear is 120 ℃, the engine lacks power, which may be due to the water temperature sensor failure, and the water temperature sensor needs to be repaired.

6. Repair the intake pressure and temperature sensor. If the engine fault light is always on and a large amount of black smoke is emitted during rapid acceleration, it may be that the intake pressure and temperature sensor is faulty and needs to be repaired.

7. Replace the oil pressure sensor. If the oil pressure indicator light and engine fault light are always on, the oil pressure sensor probe may be seriously damaged and the oil pressure sensor needs to be replaced.

8. Replace the harness of the nitrogen oxygen sensor. If the OBD fault light is always on and the engine power is insufficient, the harness of the nitrogen oxygen sensor may be worn out and cannot work normally. It is necessary to replace the harness of the nitrogen oxygen sensor.

9. Repair the harness of the heating relay. If the OBD fault light is on, it may also be caused by the open circuit at the control terminal of the heating relay. The harness of the heating relay needs to be repaired.

10. Replace the urea return pipe. The sundries in the urea return pipe are blocked, and the system cannot inject urea normally, which will also cause the OBD fault light to be on, and the urea return pipe needs to be replaced.