P0687
Powertrain Codes
P0687 - AUDI - Engine Control Module Power Relay Control Circuit High
Symptoms
- Engine Light ON (or Service Engine Soon Warning Light)
Possible Causes
- Weak battery- Low voltage while cranking - Poor engine control module electrical connection - Open or short engine control module circuit - Failed Fuse - Faulty relay
Description
The Engine Control Module (ECM) has detected a high voltage condition to the ECM.