OBD-II code · Powertrain (generic)

P0CB2 Hybrid/EV Battery Temperature Sensor O Circuit

The HV battery temperature sensor O reports a circuit fault. Cell-group temperature monitoring impaired on this channel.

Is it safe to drive with P0CB2?

The car may go into limp mode (reduced power). Get it diagnosed before a long trip.

Common causes

Most likelyTemperature sensor failed
PossibleWiring fault
Less likelyPack cell imbalance approaching service threshold

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 O, Wiring Harness, Bms

Related codes

Code data: OBDex open dataset (CC0). Labour times are typical ranges, not a quote.