OBD-II code · Powertrain (generic, extended)
P2B87 Coolant Pump A Underspeed
The coolant pump A runs below the calibrated minimum speed for the commanded duty. Mechanical resistance high or supply voltage low.
Is it safe to drive with P2B87?
The car may go into limp mode (reduced power). Get it diagnosed before a long trip.
Common causes
- Most likelyMechanical load increased (binding)
- PossibleSupply voltage low under load
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, Ecm
Related codes
- P2B9FCoolant Pump B Underspeed
- P2BA0Coolant Pump C Underspeed
- P2BA1Coolant Pump D Underspeed
- P2DF8Coolant Pump E Underspeed
- P2B84Charge Air Cooler Coolant Pump A Underspeed
- P2B85Engine Coolant Pump Underspeed
- P2B86Coolant Pump A Overspeed/Air in System
- P2B88Intake Air O2 Sensor Circuit Bank 1
- P2B89Intake Air O2 Sensor Circuit Low Voltage Bank 1
- P2B8AIntake Air O2 Sensor Circuit High Voltage Bank 1
Code data: OBDex open dataset (CC0). Labour times are typical ranges, not a quote.