P0CFFHybrid/EV Battery Pack Coolant Pump A Stuck/Stalled
- 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
- Unlike the electronics codes above, P0CFF belongs to the pump that circulates coolant through the high-voltage battery. It means the pump is commanded but does not turn, or stops. Volkswagen and Audi log P0CFF00 in the battery management unit J840 (address 008C): VW bulletin 93-21-02 for the 2021 ID.4 blames trapped air when pump V590 did not run during the fill-and-bleed routine, and Audi's 2068363 series for the Q4 e-tron prescribes two bleed runs at a battery temperature of 3 to 26 °C, replacing V590 only if the code returns. Ford lists P0CFF with MIL for the 2020 Escape HEV (20-2221, stored in the BECM) and the Explorer/Aviator hybrids (20-2345) and fixes it with BECM software. Related: P2B28 performance, P2B29 dry run, P2CF3 underspeed, P0C4A control. A stalled pump soon limits charging and drive power.
- What you may notice
- Warning such as Electric drive fault or Electrical system not working correctly
- Malfunction indicator lamp on (Ford)
- Reduced charging speed, especially DC fast charging
- Reduced drive power when the battery warms up
- Likely causes
- LikelyAir trapped in the battery coolant loop, pump running dry and stalling (VW ID.4, Audi Q4 e-tron)
- PossibleBattery control module software misjudging pump state (Ford 2020 hybrids)
- PossibleSeized or mechanically blocked battery coolant pump
- RareLow coolant level in the battery loop
- 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: €0 – €900
- Related codes
Explanation from obdex (CC0), exactly as the app shows it. Guidance only; confirm with a workshop.