OBD-II code · Powertrain (generic)
P0CB9 Hybrid/EV Battery Temperature Sensor P Circuit Low
The HV battery temperature sensor P reports a circuit low fault. Cell-group temperature monitoring impaired on this channel.
Is it safe to drive with P0CB9?
The car may go into limp mode (reduced power). Get it diagnosed before a long trip.
Common causes
- Most likelySignal wire shorted to ground
- PossibleInternal sensor short
- 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 P, Wiring Harness, Bms
Related codes
- P0C7EHybrid/EV Battery Temperature Sensor G Circuit Low
- P0C83Hybrid/EV Battery Temperature Sensor H Circuit Low
- P0C8AHybrid/EV Battery Temperature Sensor I Circuit Low
- P0C8FHybrid/EV Battery Temperature Sensor J Circuit Low
- P0C94Hybrid/EV Battery Temperature Sensor K Circuit Low
- P0C99Hybrid/EV Battery Temperature Sensor L Circuit Low
- P0CAAHybrid/EV Battery Temperature Sensor M Circuit Low
- P0CAFHybrid/EV Battery Temperature Sensor N Circuit Low
- P0CB4Hybrid/EV Battery Temperature Sensor O Circuit Low
- P0CB6Hybrid/EV Battery Temperature Sensor O Circuit Intermittent/Erratic
- P0CB7Hybrid/EV Battery Temperature Sensor P Circuit
- P0CB8Hybrid/EV Battery Temperature Sensor P Range/Performance
- P0CBAHybrid/EV Battery Temperature Sensor P Circuit High
- P0CBBHybrid/EV Battery Temperature Sensor P Circuit Intermittent/Erratic
- P0CBCDrive Motor A Coolant Temperature Sensor Circuit
Code data: OBDex open dataset (CC0). Labour times are typical ranges, not a quote.