OBD-II code · Powertrain (generic, extended)
P201F Reductant Pump A Stuck On
Reductant Pump A Stuck On: the actuator is stuck in the on position.
Is it safe to drive with P201F?
Usually safe to drive in the short term. Get it diagnosed when convenient, sooner if the car drives differently.
Common causes
- Most likelyPump relay contacts welded
- PossiblePump driver line shorted to B+
- Less likelyCarbon or debris buildup preventing free movement
Symptoms
- Check engine light or NOx warning on
- AdBlue/DEF level or quality warning
- Possible no-start countdown after ignore period
- Failed emissions inspection (NOx)
Repair at a glance
- Difficulty
- Medium
- DIY friendly
- Best left to a mechanic
- Typical labour
- 0.5–2.5 h
- Emissions test
- Likely to fail
- Parts involved
- Reductant Pump, Reductant Pump Relay
Related codes
- P215DReductant Pump B Stuck On
- P201CIntake Manifold Runner Control Actuator Supply Voltage Low (Bank 2)
- P201DIntake Manifold Runner Control Actuator Internal Performance (Bank 1)
- P201EIntake Manifold Runner Control Actuator Internal Performance (Bank 2)
- P2020Intake Manifold Runner Position Sensor/Switch Circuit Low (Bank 2)
- P2021Intake Manifold Runner Position Sensor/Switch Circuit High (Bank 2)
- P2022Intake Manifold Runner Position Sensor/Switch Circuit High (Bank 2)
Code data: OBDex open dataset (CC0). Labour times are typical ranges, not a quote.