OBD-II code · Powertrain (generic)
P0A8B 14 Volt Power Module System Voltage
The 14V DC/DC converter module reports a "system voltage" condition. 12V vehicle electrical supply may be impaired.
Is it safe to drive with P0A8B?
The car may go into limp mode (reduced power). Get it diagnosed before a long trip.
Common causes
- Most likelyInternal module fault
- PossibleWiring fault
Repair at a glance
- Difficulty
- Hard
- DIY friendly
- Best left to a mechanic
- Typical labour
- 2–8 h
- Emissions test
- Usually unaffected
- Parts involved
- Pm14v Module, Dcdc Converter
Related codes
- P0A8814 Volt Power Module Current Sensor A Circuit Low
- P0A8914 Volt Power Module Current Sensor A Circuit High
- P0A8A14 Volt Power Module Current Sensor A Circuit Intermittent
- P0A8C14 Volt Power Module System Voltage Unstable
- P0A8D14 Volt Power Module System Voltage Low
- P0A8E14 Volt Power Module System Voltage High
Code data: OBDex open dataset (CC0). Labour times are typical ranges, not a quote.