OBD-II code · Powertrain (generic)

P0C74 Motor Electronics Coolant Pump B Control Performance

The motor electronics coolant pump B control reports a performance fault. Pump output does not match commanded duty.

Is it safe to drive with P0C74?

The car may go into limp mode (reduced power). Get it diagnosed before a long trip.

Common causes

  • Most likelyPump output degraded
  • PossibleAir pocket in coolant loop

Repair at a glance

Difficulty
Hard
DIY friendly
Best left to a mechanic
Typical labour
2–7 h
Emissions test
Usually unaffected
Parts involved
Motor Electronics Coolant Pump B

Code data: OBDex open dataset (CC0). Labour times are typical ranges, not a quote.