P06E7

Symptoms

• Low or unstable sensor readings
• Check Engine light on
• Unstable engine operation
• Multiple Circuit C Sensor Error Codes
• Engine transition to emergency mode

Causes

• Short circuit in the sensor, loading circuit C
• Shorting the power wire to ground
• Moisture getting into the sensor or ECU connector
• Malfunction of the internal power supply stabilizer of the ECU
• Damaged power conductor insulation

How to Fix

1. Measure the supply voltage at terminal C with the ignition on.
2. Identify the sensors powered by circuit C using the electrical diagram
3. Turn off the sensors one by one and monitor the voltage restoration
4. Check the internal resistance of the found “culprit” sensor
5. Check the continuity and insulation of circuit C wiring
6. If the voltage is normal without sensors, diagnose the ECU

Related codes

Error P06E7 by Vehicle Brand