OBD-II code · Powertrain (generic, extended)
P2B9D Coolant Pump A Supply Voltage Circuit
Coolant pump A reports a supply voltage circuit condition. Coolant circulation through the affected loop cannot be commanded reliably.
Is it safe to drive with P2B9D?
The car may go into limp mode (reduced power). Get it diagnosed before a long trip.
Common causes
- Most likelySupply fuse blown
- PossibleWiring or connector fault
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 A, Wiring Harness, Ecm
Related codes
- P26F7Coolant Pump C Supply Voltage Circuit
- P2B62Coolant Pump B Supply Voltage Circuit
- P2B69Coolant Pump D Supply Voltage Circuit
- P2DFACoolant Pump E Supply Voltage Circuit
- P2B9AReductant Quality Sensor Circuit Intermittent/Erratic
- P2B9BVehicle Conditions Incorrect for Particulate Matter Sensor Regeneration
- P2B9CCoolant Pump A Stuck/Stalled
- P2B9ECoolant Pump A Control Module Overtemperature
- P2B9FCoolant Pump B Underspeed
- P2BA0Coolant Pump C Underspeed
Code data: OBDex open dataset (CC0). Labour times are typical ranges, not a quote.