P0CC4Drive Motor A Coolant Pump Control Circuit High
- Generic OBD-II code · Powertrain
- Turns on the check-engine light
- Matters for the ITP
- Can trigger limp mode
- Needs a drive cycle to confirm a fix
- How the car detects it
- P0CC4 stands for a control line of the drive motor A coolant pump that is held at supply voltage or overloaded. In GM's 2013 eAssist table 13OBDG05C the output driver reports a high-circuit status, and unlike the open and low checks this one runs while the pump is commanded on; 20 failures in 25 samples at 250 ms in run/crank set a Type B code, two trips. Sampling with the output switched on lets the driver recognise excess current or a voltage that should not be there. Causes include a control wire chafed against a battery-positive feed, a pump drawing too much current because of a jammed rotor, or water in the connector. The output stage normally switches off to protect itself, so the pump stops and the motor generator loses active cooling; P0CC3 and P0CC1 are the other circuit codes of this pump.
- What you may notice
- Check-engine lamp after two trips
- Pump silent when it should run
- Likely causes
- LikelyControl wire shorted to a voltage-carrying line
- PossibleJammed pump drawing excess current
- RareWater ingress in the pump connector
- Inspection (ITP)
- Matters for the ITP. While the check-engine light is on, the car fails the emissions check.
- Repair
- Medium · Usually a job for a workshop.Typical cost: €60 – €600
- Related codes
Explanation from obdex (CC0), exactly as the app shows it. Guidance only; confirm with a workshop.