Powertrain, generic · Hybrid propulsion

P0CFF Hybrid/EV Battery Pack Coolant Pump A Stuck/Stalled

Check engine lightOn
EmissionsRelevant
Drive cycleRequired
Limp modePossible

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.

Likely causes

Air trapped in the battery coolant loop, pump running dry and stalling (VW ID.4, Audi Q4 e-tron)
Battery control module software misjudging pump state (Ford 2020 hybrids)
Seized or mechanically blocked battery coolant pump
Low coolant level in the battery loop

Symptoms

  • 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

Repair estimate

DifficultyMediumWorkshop job
Parts and labour€0–900
Time0.5–3 h

Typical range across vehicles; the real cost depends on what the testing finds.

Parts involved

hv battery pack coolant pump abattery pack coolant loop

Related codes

P0C47P0C4AP2B28P2B29P2CF3P2CF5

References: static.nhtsa.gov, static.nhtsa.gov, static.nhtsa.gov, static.nhtsa.gov.