P0E22Hybrid/EV Battery Pack Coolant Control Valve C Control Circuit Driver Current/Temperature Too 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
- P0E22 tells that the driver for a third coolant control valve, C, has protected itself against excessive current or heat. No manufacturer documents P0E22 publicly, and none of the reviewed GM, Ford, Stellantis or Mercedes documents uses a valve C at all. Three valves suggest a loop with several branches, for example radiator, air-conditioning chiller and heater, with C switching one of them. Unlike a plain ground short (P0DEB), the overload code catches a load that still conducts but draws too much, so a stiff valve or a shorted turn in its motor is the likely trigger rather than a broken wire. CARB requires that every electronic output of battery thermal management be checked for circuit faults; TI's automotive smart switches show the mechanism: they disconnect once current reaches the limit or the junction nears 150 °C.
- What you may notice
- Check engine light on
- One branch of the coolant loop no longer switches
- Battery overcooled in winter or kept too warm in summer
- Likely causes
- LikelyValve C stiff or jammed by deposits
- PossibleShorted turn in the valve C actuator motor
- RareDegraded driver stage in the control module
- 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: €100 – €900
- Related codes
Explanation from obdex (CC0), exactly as the app shows it. Guidance only; confirm with a workshop.