P0CB7Hybrid/EV Battery Temperature Sensor P Circuit
- Generic OBD-II code · Powertrain
- Turns on the check-engine light
- Matters for the ITP
- Can trigger limp mode
- Needs a drive cycle to confirm a fix
- How the car detects it
- P0CB7 covers an electrical fault of battery temperature sensor P that the controller cannot pin down as low, high or intermittent. No manufacturer lists this code on a public official server. In GM's 2011 Volt rationality table P is the sixteenth and last sensor, and GM gives it only P0CB8 to P0CBB; Mitsubishi's Outlander PHEV treats P as module sensor [15] with rationality, short and open codes. In this block P is the final sensor letter, the next code P0CBC already concerns drive motor cooling. CARB requires the battery temperature sensors to be monitored under section (e)(15.2.3)(A)(iv), with circuit faults and range violations to be told apart per (e)(15.2.1). A missing value of P makes the battery controller act cautiously and lower power. Checking means opening the de-energised pack.
- What you may notice
- Hybrid or EV warning message
- Limited electric power until repaired
- Likely causes
- LikelyLoose or corroded plug of sensor P
- PossibleDamaged wiring of sensor P inside the pack
- RareMeasuring channel for sensor P in the monitoring unit faulty
- Inspection (ITP)
- Matters for the ITP. While the check-engine light is on, the car fails the emissions check.
- Repair
- Workshop only · Usually a job for a workshop.Typical cost: €150 – €2,500
- Related codes
Explanation from obdex (CC0), exactly as the app shows it. Guidance only; confirm with a workshop.