P2CB2
Charge Air Cooler Coolant Pump B Underspeed
Charge air cooler coolant pump B reports a underspeed condition. CAC coolant loop circulation is impaired.
- Check engine light: Yes
- Emissions related: No
- Repair difficulty: medium
Common causes
Ordered by how often each turns out to be the cause.
- Mechanical load increasedCommon
- Supply voltage low under loadPossible
Parts involved
- Cac Coolant Pump B
- Wiring Harness
- ECM
P2CB2 is a generic OBD-II code defined by SAE J2012. Exact wording and diagnostic procedure vary by manufacturer and model. Code definitions are drawn from the public-domain OBDex dataset; the workshop notes are our own.