DTC P0685 Audi
ECM PCM Power Relay Control Circuit Open
ECM PCM Power Relay Control Circuit Open
Description
Sensed circuit voltage, <3 V
Cause and Solution
Check fuses
Check ECM power supply relay
Check for signal, voltage and ground
Check harness for open or short
Check connector for damage.
Video Guide
Diagnostic Info
- DTC Code: P0685
- Brand: Audi