P0CE3 code meaning
Hybrid/EV Battery Pack Coolant Control Valve A Control Circuit High
Powertrain system Generic code P0Cxx codes Check engine light
What P0CE3 means
P0CE3 is the short-to-voltage fault of the coolant control valve A drive circuit. GM tests it on the motor-driven four-port battery valve of the 2011 Chevrolet Volt and 2016 Cadillac ELR: driver line 1 reads high while the valve should be stopped or moving forward. System voltage must exceed 9 V or 10.2 V, and 90 of 100 samples at 6.25 ms set a Type B code with the MIL on the second trip. Unlike P0CE2, the check is made in the other direction of travel, which helps tell which condition was detected. Pinched wires touching a supply line, harness damage near the battery or a faulty driver stage in the module are typical causes. Battery temperature control then works only in a fallback mode. Short to ground is P0CE2, mechanical sticking P0CE0 and P0CE1.
P0CE3 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 P0CE3
- MIL after two trips (GM)
- Battery heating or cooling in fallback mode
Common causes of P0CE3
- Most likelyDriver wire pinched against a supply line
- PossibleHarness damage near the battery or valve
- Less likelyDriver stage in the control module faulty
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 aWiring harnessBms
What each part of P0CE3 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. |
| E3 | The exact fault in that area. |
What to do next
- Note P0CE3 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 P0CE3
What does P0CE3 mean?
P0CE3 means "Hybrid/EV Battery Pack Coolant Control Valve A Control Circuit High". P0CE3 is the short-to-voltage fault of the coolant control valve A drive circuit. It is a generic code, so it means the same on every make.
Is it safe to drive with P0CE3?
Drive gently and only to a workshop. With P0CE3 the car can go into limp mode (reduced power) to protect itself.
Will P0CE3 fail an emissions test?
Yes, it can. P0CE3 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 P0CE3 to fix?
Difficulty: hard. A typical repair takes 0.5 to 3 hours of work. This is a job for a workshop.
Will P0CE3 clear itself after the repair?
Clear the code with a scanner after the repair. If the fault is fixed, it does not come back.