Powertrain
generic / SAE
P2E31
Battery Charger B Module Supply Voltage High
The supply voltage to battery charger B control module is high. Charger may not start or operate reliably.
SystemPowertrain
Typegeneric / SAE
GroupP2
Range / numberE / 31
Possible causes
- Alternator overvoltage high
- Wire shorted to B+ medium
Symptoms
- Charge status indicator shows fault
- Charging may not start or interrupts
- Slower-than-expected charge rate
Inspection / repair
- Difficulty: medium
- DIY: shop recommended
- Estimated cost: 150–800 €
- Estimated time: 0.5–3 h
- Component: battery charger b control module
- Component: wiring harness
- MIL / check engine light
- limp mode possible
Sources
References
sae:J2012