OBD-II code · Powertrain (generic)
P0CAB Hybrid/EV Battery Temperature Sensor M Circuit High
The HV battery temperature sensor M reports a circuit high fault. Cell-group temperature monitoring impaired on this channel.
Is it safe to drive with P0CAB?
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
Symptoms
- EV/hybrid system warning light on
- Reduced power output or limp mode
- Charging may fail or be slowed
- Reduced electric range
Repair at a glance
- Difficulty
- Medium
- DIY friendly
- Best left to a mechanic
- Typical labour
- 0.5–3 h
- Emissions test
- Usually unaffected
- Parts involved
- Hv Battery Temp Sensor M, Wiring Harness, Bms
Related codes
- P0C7FHybrid/EV Battery Temperature Sensor G Circuit High
- P0C84Hybrid/EV Battery Temperature Sensor H Circuit High
- P0C8BHybrid/EV Battery Temperature Sensor I Circuit High
- P0C90Hybrid/EV Battery Temperature Sensor J Circuit High
- P0C95Hybrid/EV Battery Temperature Sensor K Circuit High
- P0C9AHybrid/EV Battery Temperature Sensor L Circuit High
- P0CB5Hybrid/EV Battery Temperature Sensor O Circuit High
- P0CBAHybrid/EV Battery Temperature Sensor P Circuit High
- P0CA8Hybrid/EV Battery Temperature Sensor M Circuit
- P0CA9Hybrid/EV Battery Temperature Sensor M Range/Performance
- P0CAAHybrid/EV Battery Temperature Sensor M Circuit Low
- P0CACHybrid/EV Battery Temperature Sensor M Circuit Intermittent/Erratic
- P0CADHybrid/EV Battery Temperature Sensor N Circuit
- P0CAEHybrid/EV Battery Temperature Sensor N Range/Performance
Code data: OBDex open dataset (CC0). Labour times are typical ranges, not a quote.