Powertrain, generic (extended)

P2CF5 Hybrid/EV Battery Pack Coolant Pump B Stuck/Stalled

Check engine lightOn
EmissionsRelevant
Drive cycleNot required
Limp modePossible

P2CF5 means battery coolant pump B does not turn at all although it is commanded and powered: the rotor is blocked, or the pump electronics has given up after failed start attempts. A seized bearing, debris or deposits after coolant work, a failed motor winding or frozen coolant in a weak mixture are the usual suspects. Ford's 2024 summary lists the corresponding pump fault type as actuator stuck (71). No manufacturer publicly documents P2CF5; pump A's equivalent, P0CFF, appears in Ford's 2020 hybrid bulletins 20-2293/20-2345, where reprogramming the battery controller resolved it. If pump B merely runs too slowly, P2CF7 applies; overspeed or air is P2CF6. A stalled pump stops flow through its part of the battery loop, so expect power limits, slower charging and a warning lamp.

Likely causes

Pump B rotor or bearing seized
Debris or deposits jamming the impeller after coolant work
Pump motor or its electronics failed
Coolant frozen due to insufficient antifreeze

Symptoms

  • Warning lamp for hybrid system or engine
  • Charging slower or interrupted
  • Power reduced as battery temperature rises

Repair estimate

DifficultyMediumWorkshop job
Parts and labour€100–900
Time0.8–3 h

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

Parts involved

hybrid battery coolant pump bbattery pack coolant loop

Related codes

P2CF7P2CF6P0CFFP0E1D

References: fordservicecontent.com, static.nhtsa.gov, law.cornell.edu.