Powertrain
generic / SAE
P0AC4
Hybrid/EV Powertrain Control Module Requested MIL Illumination
The hybrid powertrain control module has requested MIL illumination via the inter-module bus. Underlying fault is reported separately by the requesting module.
SystemPowertrain
Typegeneric / SAE
GroupP0
Range / numberA / C4
Possible causes
- Downstream fault in hybrid system high
- Communication lag - MIL request stale medium
Inspection / repair
- Difficulty: medium
- DIY: shop recommended
- Estimated cost: 100–500 €
- Estimated time: 0.5–3 h
- Component: hybrid powertrain cm
- Component: module communication bus
- MIL / check engine light
Sources
References
sae:J2012