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.
- Check engine light: Yes
- Emissions related: No
- Repair difficulty: hard
Common causes
Ordered by how often each turns out to be the cause.
- Internal module faultCommon
- Wiring faultPossible
Parts involved
- Pm14v Module
- Dcdc Converter
P0A8B is a generic OBD-II code defined by SAE J2012. Exact wording and diagnostic procedure vary by manufacturer and model. Code definitions are drawn from the public-domain OBDex dataset; the workshop notes are our own.