OBD-II code · Powertrain (generic)
P0A89 14 Volt Power Module Current Sensor A Circuit High
The current sensor A of the 14V DC/DC converter module reports a circuit high fault. 12V system current measurement is unreliable.
Is it safe to drive with P0A89?
The car may go into limp mode (reduced power). Get it diagnosed before a long trip.
Common causes
- Most likelyCurrent sensor failed
- PossibleWiring fault
- Less likelyConnector pins corroded - high contact resistance
Repair at a glance
- Difficulty
- Medium
- DIY friendly
- Best left to a mechanic
- Typical labour
- 1–4 h
- Emissions test
- Usually unaffected
- Parts involved
- Pm14v Current Sensor A, Wiring Harness, Dcdc Converter
Related codes
- P0C9F14 Volt Power Module Current Sensor B Circuit High
- P0A8614 Volt Power Module Current Sensor A Circuit
- P0A8714 Volt Power Module Current Sensor A Circuit Range/Performance
- P0A8814 Volt Power Module Current Sensor A Circuit Low
- P0A8A14 Volt Power Module Current Sensor A Circuit Intermittent
- P0A8B14 Volt Power Module System Voltage
- P0A8C14 Volt Power Module System Voltage Unstable
Code data: OBDex open dataset (CC0). Labour times are typical ranges, not a quote.