P0CE6 code meaning
Hybrid/EV Battery Pack Coolant Control Valve Position Sensor Circuit Low
Powertrain system Generic code P0Cxx codes Check engine light
What P0CE6 means
P0CE6 reports that the position feedback of the battery coolant control valve has fallen below its permitted window. GM expresses the signal relative to the reference voltage: the 2011 Chevrolet Volt fails it below 5 % in 40 of 50 samples at 100 ms, the 2016 Cadillac ELR below 28 % in 640 of 800 samples at 6.25 ms, a value under the lowest end stop the ELR accepts during learning (just over 30 %). Both are Type B, so the MIL comes on after two trips, and while the code is active the valve performance test is suspended. A short of the signal wire to ground, a missing reference voltage or a defective sensor track in the actuator are the likely causes. The controller can then no longer position the valve reliably. The high fault is P0CE7, plausibility P0CE5.
P0CE6 at a glance
- Check engine lightYes, usually on
- Emissions testCan fail
- Limp modePossible
- Repair difficultyHard
- Typical labor0.5 to 3 hours
- Clears after repairWhen cleared with a scanner
Symptoms of P0CE6
- MIL after two trips (GM)
- Valve position shown as near 0 % in live data
Common causes of P0CE6
- Most likelyFeedback signal wire shorted to ground
- PossibleSensor reference voltage missing or open
- PossibleWorn or defective sensor track in the actuator
Check the most likely causes first. Replacing parts by guesswork is the most expensive way to clear a code.
Parts involved
Hv battery pack coolant valve position sensorWiring harnessBms
What each part of P0CE6 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. |
| E6 | The exact fault in that area. |
What to do next
- Note P0CE6 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 P0CE6
What does P0CE6 mean?
P0CE6 means "Hybrid/EV Battery Pack Coolant Control Valve Position Sensor Circuit Low". P0CE6 reports that the position feedback of the battery coolant control valve has fallen below its permitted window. It is a generic code, so it means the same on every make.
Is it safe to drive with P0CE6?
Drive gently and only to a workshop. With P0CE6 the car can go into limp mode (reduced power) to protect itself.
Will P0CE6 fail an emissions test?
Yes, it can. P0CE6 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 P0CE6 to fix?
Difficulty: hard. A typical repair takes 0.5 to 3 hours of work. This is a job for a workshop.
Will P0CE6 clear itself after the repair?
Clear the code with a scanner after the repair. If the fault is fixed, it does not come back.