Powertrain
generic / SAE
P06A8
Sensor Reference Voltage C Circuit Range or Performance
Reference rail A is electrically intact yet not delivering exactly 5.000 V - drift, load-induced sag, or noise pulled the rail out of tolerance.
SystemPowertrain
Typegeneric / SAE
GroupP0
Range / number6 / A8
Possible causes
- Reference rail 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: medium
- DIY: shop recommended
- Estimated cost: 200–1500 €
- Estimated time: 1–4 h
- Component: sensor reference voltage c
- MIL / check engine light
- emissions-relevant
Sources
References
sae:J2012