DTC P0688 Audi

ECM PCM Power Relay Sense Circuit

ECM PCM Power Relay Sense Circuit

Description

Main relay, commanded on

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

Duration: PT3M54S | Uploaded: 2020-05-01

Diagnostic Info

  • DTC Code: P0688
  • Brand: Audi
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