P06D2

Symptoms

• Check Engine Light with Multiple Sensor Error Codes
• Unstable engine operation
• Incorrect readings from MAP, TPS or other sensors
• Engine transition to emergency mode
• Deterioration of acceleration dynamics

Causes

• Open circuit 5 V reference wire E
• Short circuit in the reference voltage circuit to ground
• Malfunction of one of the sensors on circuit E, causing an open circuit
• Corrosion of wiring connectors
• Internal ECU fault

How to Fix

1. Read all error codes - with P06D2 there are usually additional sensor codes present
2. Define a list of sensors connected to the reference voltage circuit E
3. Check the 5 V voltage at the sensor connectors with the ignition on
4. Disconnect sensors one at a time to detect a short circuit in the circuit
5. Check the integrity of the wiring from the ECU to each sensor
6. If the wiring is in good condition, diagnose the ECU.

Related codes

Error P06D2 by Vehicle Brand