P0C6E code meaning
Hybrid/EV Battery Temperature Sensor A/B Correlation
Powertrain system Generic code P0Cxx codes Check engine light
What P0C6E means
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.
P0C6E at a glance
- Check engine lightYes, usually on
- Emissions testCan fail
- Limp modePossible
- Repair difficultyWorkshop only
- Typical labor0.5 to 6 hours
- Clears after repairAfter a drive cycle
Symptoms of P0C6E
- Hybrid or EV system warning lamp
- Reduced charge and discharge power
- Battery fan or cooling running more than usual
Common causes of P0C6E
- Most 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
- Less likelyBattery management software with an over-sensitive comparison
Check the most likely causes first. Replacing parts by guesswork is the most expensive way to clear a code.
Parts involved
Hv battery temp sensor aHv battery temp sensor bBms
What each part of P0C6E means
| P | Powertrain system: engine, fuel system, ignition, emissions and transmission. |
| 0 | Generic code: it means the same on every make (SAE standard). |
| C | Area: hybrid propulsion. |
| 6E | The exact fault in that area. |
What to do next
- Note P0C6E and any other codes stored with it: several codes together often point to one cause.
- Check for loose connectors and damaged wiring around the parts the code names.
- Check open recalls for your car: some faults are fixed for free by the dealer. Enter your VIN.
- Clear the code only after the repair. If it comes back, the fault is still there.
Buying a used car? Scan it for stored codes before you pay. A recently cleared memory can hide a problem.
Questions about P0C6E
What does P0C6E mean?
P0C6E means "Hybrid/EV Battery Temperature Sensor A/B Correlation". P0C6E compares two battery temperature sensors, A and B, with each other rather than judging either one alone. It is a generic code, so it means the same on every make.
Is it safe to drive with P0C6E?
Drive gently and only to a workshop. With P0C6E the car can go into limp mode (reduced power) to protect itself.
Will P0C6E fail an emissions test?
Yes, it can. P0C6E is emissions-related, so most inspection programs fail a car while it is stored or while the check engine light is on.
How hard is P0C6E to fix?
Difficulty: workshop only. A typical repair takes 0.5 to 6 hours of work. This is a job for a workshop.
Will P0C6E clear itself after the repair?
After the repair the car has to complete a drive cycle (a mix of city and highway driving) before the test runs again. Until then the readiness monitor shows "not ready", which can fail an inspection.