Powertrain
generic / SAE
P068B
ECM or PCM Power Relay De-Energized Performance Too Late
Same as P068A with the relay dropping out later than the calibrated window allows - keeps the ECU powered too long after key-off, drains the battery.
SystemPowertrain
Typegeneric / SAE
GroupP0
Range / number6 / 8B
Possible causes
- Relay contact welded high
Symptoms
- Check engine light on
- Possible limp mode or no-start
- Multiple follow-up faults across modules
- Reset/relearn may be needed after repair
Inspection / repair
- Difficulty: medium
- DIY: possible
- Estimated cost: 80–350 €
- Estimated time: 0.5–1.8 h
- Component: ecm power relay
- MIL / check engine light
Sources
References
sae:J2012