P0C6F code meaning
Hybrid/EV Battery Temperature Sensor B/C Correlation
Powertrain system Generic code P0Cxx codes Check engine light
What P0C6F means
P0C6F sets when battery temperature sensors B and C disagree by more than the calibrated margin. Sensor B also takes part in the A/B check (P0C6E), so the pattern of stored codes helps: if P0C6E and P0C6F appear together, B is the shared suspect, while P0C6F alone points more towards C. No manufacturer documents P0C6F publicly. A Toyota patent describes a second way to catch such faults while the pack is working: if the spread between sensors is large during charging or discharging and one output barely moves, that sensor is treated as frozen. GM files the physical fault per sensor; on the eAssist, sensor 3 is P0ACB with 8.55 °C after six hours off. A real local hot spot inside a module can also open the gap.
P0C6F 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 P0C6F
- Hybrid or EV system warning
- Power or charging rate limited
- Displayed battery temperatures differ noticeably in live data
Common causes of P0C6F
- Most likelySensor C reading off, especially when P0C6F is stored alone
- PossibleSensor B reading off, likely when P0C6E is stored as well
- PossibleSensor output stuck at one value while the pack temperature changes
- Less likelyReal local heating in a module, for example from a cell with high resistance
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 bHv battery temp sensor cBms
What each part of P0C6F 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. |
| 6F | The exact fault in that area. |
What to do next
- Note P0C6F 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 P0C6F
What does P0C6F mean?
P0C6F means "Hybrid/EV Battery Temperature Sensor B/C Correlation". P0C6F sets when battery temperature sensors B and C disagree by more than the calibrated margin. It is a generic code, so it means the same on every make.
Is it safe to drive with P0C6F?
Drive gently and only to a workshop. With P0C6F the car can go into limp mode (reduced power) to protect itself.
Will P0C6F fail an emissions test?
Yes, it can. P0C6F 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 P0C6F to fix?
Difficulty: workshop only. A typical repair takes 0.5 to 6 hours of work. This is a job for a workshop.
Will P0C6F 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.