P0CE3Hybrid/EV Battery Pack Coolant Control Valve A Control Circuit High
- Generic OBD-II code · Powertrain
- Turns on the check-engine light
- Matters for the ITP
- Can trigger limp mode
- How the car detects it
- 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.
- What you may notice
- MIL after two trips (GM)
- Battery heating or cooling in fallback mode
- Likely causes
- LikelyDriver wire pinched against a supply line
- PossibleHarness damage near the battery or valve
- RareDriver stage in the control module faulty
- Inspection (ITP)
- Matters for the ITP. While the check-engine light is on, the car fails the emissions check.
- Repair
- Hard · Usually a job for a workshop.Typical cost: €80 – €600
- Related codes
Explanation from obdex (CC0), exactly as the app shows it. Guidance only; confirm with a workshop.