Powertrain
generic / SAE
P06E4
Control Module Wake-up Circuit Performance
The wake-up circuit that brings the ECU out of standby on key-on or bus activity does not behave as expected - module slow to wake or wake events missed. Affects cold-start time and stop-start operation.
SystemPowertrain
Typegeneric / SAE
GroupP0
Range / number6 / E4
Possible causes
- Wake-up pin response drifted 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: hard
- DIY: shop recommended
- Estimated cost: 400–2000 €
- Estimated time: 2–6 h
- Component: ecu wakeup circuit
- MIL / check engine light
Sources
References
sae:J2012