P2CB5Charge Air Cooler Coolant Pump B Control Module Overtemperature
- 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
- P2CB5 is raised by the electronics inside charge air cooler pump B when their temperature exceeds the limit; the pump then throttles back or stops to protect itself. No manufacturer documents P2CB5 publicly. Ford's 2024 gasoline OBD summary lists the same fault type, 98 (system over temperature), for its auxiliary coolant pump B (P2B64), monitored continuously from 11 V. Ford's 2019 hybrid summary shows the principle on the LIN-linked engine coolant pump (P26D2): the pump sends its module temperature and the PCM flags readings above 130 °C. The board is cooled by the liquid passing through, so overheating mostly follows a dry run, air in the pump, a stiff impeller or a hot mounting spot. Check level and bleeding first; air alone often appears as P2CB1.
- What you may notice
- MIL on
- Pump B slows down or switches off, charge air gets warmer
- Reduced power in hot weather or on long climbs
- Likely causes
- LikelyPump running dry or partly in air because of low coolant
- PossibleStiff impeller making the motor draw more current
- RarePump mounted close to hot exhaust or turbo parts
- RareAgeing power stage in the pump electronics
- 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: €30 – €800
- Related codes
Explanation from obdex (CC0), exactly as the app shows it. Guidance only; confirm with a workshop.