Error P0667 on JAC все модели

Symptoms

• Check Engine light comes on
• Possible unreasonable power restrictions (if the ECU “thinks” it is overheating)
• Lack of thermal protection in case of real overheating
• In most cases there are no visible symptoms
• Code P0666 may appear at the same time

Causes

• Degradation of the internal temperature sensor of the ECU with age
• Incorrect operation of the ADC inside the ECU
• Previous exposure to moisture or overheating on ECU electronics
• ECU manufacturing defect
• Mechanical vibration damage to ECU chips

How to Fix

1. Check the ECU temperature with a pyrometer or contact thermometer under different conditions
2. Compare the readings of the internal sensor on the scanner with the measured temperature of the ECU housing
3. Make sure that the ECU is installed correctly and that there is no overheating.
4. Check the ECU connectors for moisture and corrosion
5. ECU diagnostics on a specialized stand
6. If confirmed, repair or replacement of the ECU

FAQ

Error P0667 on other vehicles