OBD-II code · Powertrain (generic, extended)
P2B64 Coolant Pump B Control Module Overtemperature
Coolant pump B reports a control module overtemperature condition. Coolant circulation through the affected loop cannot be commanded reliably.
Is it safe to drive with P2B64?
The car may go into limp mode (reduced power). Get it diagnosed before a long trip.
Common causes
- Most likelyAmbient or under-bonnet temperature too high
- PossibleModule cooling path blocked
Repair at a glance
- Difficulty
- Medium
- DIY friendly
- Best left to a mechanic
- Typical labour
- 1–4 h
- Emissions test
- Usually unaffected
- Parts involved
- Coolant Pump B, Wiring Harness, Ecm
Related codes
- P26F9Coolant Pump C Control Module Overtemperature
- P2B6BCoolant Pump D Control Module Overtemperature
- P2B9ECoolant Pump A Control Module Overtemperature
- P2DFBCoolant Pump E Control Module Overtemperature
- P2B61Engine Coolant Flow Control Valve Stuck Closed
- P2B62Coolant Pump B Supply Voltage Circuit
- P2B63Coolant Pump B Stuck/Stalled
- P2B65Coolant Pump B Overspeed/Air in System
- P2B66Coolant Pump D Control Circuit/Open
- P2B67Coolant Pump D Control Circuit Low
Code data: OBDex open dataset (CC0). Labour times are typical ranges, not a quote.