Powertrain, generic (extended)

P2BC3 Charge Air Cooler Coolant Pump A Control Module Overtemperature

Check engine lightOn
EmissionsRelevant
Drive cycleRequired
Limp modePossible

The control electronics of an electric coolant pump sit inside the pump body and are cooled by the liquid flowing through it. P2BC3 means the electronics of charge air cooler pump A report a temperature above their limit. Far more often than a defective board, the reason is a low coolant level, air trapped in the pump after service, a partly blocked impeller drawing extra current, or a mounting spot exposed to engine heat. No manufacturer documents P2BC3 publicly. Ford's 2019 hybrid OBD summary shows how such a check works on its LIN-connected engine coolant pump (P26D2): the pump sends its module temperature and the PCM flags a value above 130 °C; the 2024 summary lists the same overtemperature type for the auxiliary pumps. The pump then derates or stops, and charge air temperature rises.

Likely causes

Low coolant level or air trapped in the low-temperature loop
Partly blocked impeller or worn bearing raising motor current
Fault in the pump's integrated electronics
Missing heat shield or pump placed close to hot engine parts

Symptoms

  • Check engine light or engine warning message
  • Pump runs slower or switches off, especially in hot weather
  • Hot charge air and reduced power

Repair estimate

DifficultyMediumWorkshop job
Parts and labour€30–800
Time0.5–2.5 h

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

Parts involved

cac coolant pump awiring harnessecm

Related codes

P2BC1P2BC2P2B83P026EP2CB5

References: law.cornell.edu, fordservicecontent.com, fordservicecontent.com.