Powertrain, generic (extended)

P2BC2 Charge Air Cooler Coolant Pump A Supply Voltage Circuit

Check engine lightOn
EmissionsRelevant
Drive cycleNot required
Limp modePossible

P2BC2 points to the power feed of charge air cooler pump A: the pump or its controller sees a supply that is missing or outside its working window. Typical causes are a blown fuse, a relay with burnt contacts, a broken or corroded feed or ground wire, or a water-damaged plug; a weak battery can contribute. No manufacturer documents P2BC2 publicly. Ford's 2024 OBD summary shows the same fault type on its smart auxiliary coolant pumps: the pump driver flags a supply outside its permitted range (P2B9D for pump A), checked continuously from 11 V battery voltage and logged after five seconds. CARB requires charge air cooler systems and their electrical components to be monitored. Without a proper supply the pump stops, the charge air warms up and the engine may limit power. A pump that is powered but blocked is P2BC1.

Likely causes

Blown fuse or faulty relay in the pump feed
Broken or corroded supply or ground wire
Water ingress or corrosion in the pump connector
Weak battery or charging fault

Symptoms

  • Check engine light or engine warning message
  • Pump does not run, charge air temperature rises
  • Reduced power in hot conditions or under load

Repair estimate

DifficultyMediumDIY possible
Parts and labour€20–700
Time0.3–2.5 h

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

Parts involved

cac coolant pump awiring harnessecm

Related codes

P2BC1P2BC3P023AP2B84P2CB4U02A9

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