Powertrain, generic (extended)

P2CF3 Hybrid/EV Battery Pack Coolant Pump A Underspeed

Check engine lightOn
EmissionsRelevant
Drive cycleNot required
Limp modePossible

P2CF3 is set when battery coolant pump A turns more slowly than the controller commands, although it is powered and not fully blocked. Typical reasons are a sluggish bearing, deposits on the impeller, low supply voltage or a pump motor that has lost strength; a faulty speed signal can produce the same picture. Ford uses P2CF3 on 2020 hybrids: bulletin 20-2221 (Escape HEV produced until 10 June 2020, code stored in the BECM) and 20-2293/20-2345 (Explorer, Aviator and Police Interceptor Utility hybrid) clear it, along with other pump codes, by reprogramming once the coolant level has been confirmed as correct. In Ford's 2024 OBD summary underspeed is a separate pump failure category (B2). Overspeed or dry running is P2B29, a seized pump P0CFF. The battery may run warmer and power may be limited.

Likely causes

Worn bearing or deposits slowing the pump
Battery controller software misreading pump speed (Ford 2020 hybrids)
Voltage drop on the pump feed or ground under load
Implausible speed feedback from the pump electronics

Symptoms

  • MIL or hybrid system warning
  • Battery temperature higher than usual
  • Reduced drive or charging power

Repair estimate

DifficultyMediumWorkshop job
Parts and labour€60–900
Time0.4–3 h

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

Parts involved

hybrid battery coolant pump abattery pack coolant loop

Related codes

P2B29P0CFFP0C4AP2B28P2CF7

References: static.nhtsa.gov, static.nhtsa.gov, static.nhtsa.gov, fordservicecontent.com.