OBD-II code · Powertrain (generic)
P0C9F 14 Volt Power Module Current Sensor B Circuit High
The ECM detects a high fault on the 14 volt power module current sensor b circuit. Reading cannot be used reliably for control.
Is it safe to drive with P0C9F?
The car may go into limp mode (reduced power). Get it diagnosed before a long trip.
Common causes
- Most likelySignal wire shorted to B+
- PossibleOpen sensor
- 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 B, Wiring Harness, Dcdc Converter
Related codes
- P0A8914 Volt Power Module Current Sensor A Circuit High
- P0C9C14 Volt Power Module Current Sensor B Circuit
- P0C9D14 Volt Power Module Current Sensor B Circuit Range/Performance
- P0C9E14 Volt Power Module Current Sensor B Circuit Low
- P0CA014 Volt Power Module Current Sensor B Circuit Intermittent
- P0CA1Drive Motor Control Module Requested MIL Illumination
- P0CA2DC/DC Converter Step Down Voltage Performance
Code data: OBDex open dataset (CC0). Labour times are typical ranges, not a quote.