P215DReductant Pump B Stuck On
- Generic OBD-II code · Powertrain
- Turns on the check-engine light
- Matters for the ITP
- Can trigger limp mode
- How the car detects it
- P215D says the second DEF pump, called pump B or pump 2, keeps running or stays powered although the controller has commanded it off. No manufacturer documents this code publicly. Pump B itself is documented: Ford's 6.7L Super Duty trucks of 2023 can store pump B circuit codes P20FA, P20FC and P20FD (SSM 51891), and FCA names the same channel Reductant Pump 2 on 3.0L EcoDiesel models. California's OBD rule asks for functional checks of output components, and a stuck-on state is the logical opposite of P20FB, Performance/Stuck Off. A driver stage that no longer switches off, a control line shorted on the switched side or a welded relay could cause it. Effects can include pressure that cannot be released, lines not purged at shutdown and a drained battery. P201F is the same fault on pump A.
- What you may notice
- Check engine light on
- Pump audible after switching off the engine
- DEF system warning, possibly a flat battery after standing
- Likely causes
- LikelyOutput stage in the control module no longer switching off
- PossiblePump control line shorted so the pump receives power permanently
- RareWelded contacts in the pump supply relay
- Inspection (ITP)
- Matters for the ITP. While the check-engine light is on, the car fails the emissions check.
- Repair
- Medium · Usually a job for a workshop.Typical cost: €100 – €1,500
- Related codes
Explanation from obdex (CC0), exactly as the app shows it. Guidance only; confirm with a workshop.