P0C6EHybrid/EV Battery Temperature Sensor A/B Correlation
- 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
- P0C6E compares two battery temperature sensors, A and B, with each other rather than judging either one alone. After a long rest the pack should be close to one temperature, so a lasting gap between the two points to a sensor that reads wrongly while staying electrically valid. No manufacturer documents P0C6E publicly; GM and Mitsubishi run the same idea against the pack average and store per-sensor codes instead. GM's eAssist table 13OBDG05C flags sensor 1 (P0A9C) or sensor 2 (P0AC6) beyond 8.55 °C after more than six hours off, Type B; Mitsubishi's 2022 Outlander PHEV allows 13 °C after one hour of soak. A Subaru patent compares a sensor pair after parking once both cool at a similar rate. P0C6F covers the B/C pair.
- What you may notice
- Hybrid or EV system warning lamp
- Reduced charge and discharge power
- Battery fan or cooling running more than usual
- Likely causes
- LikelyThermistor A or B drifted while staying inside its electrical range
- PossibleSensor no longer seated against its cell or module
- PossibleGenuine temperature difference from uneven cooling or a weak cell group
- RareBattery management software with an over-sensitive comparison
- 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: €100 – €2,500
- Related codes
Explanation from obdex (CC0), exactly as the app shows it. Guidance only; confirm with a workshop.