P215D code meaning
Reductant Pump B Stuck On
Powertrain system Generic code P21xx codes Check engine light
What P215D means
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.
P215D at a glance
- Check engine lightYes, usually on
- Emissions testCan fail
- Limp modePossible
- Repair difficultyMedium
- Typical labor0.5 to 3 hours
- Clears after repairWhen cleared with a scanner
Symptoms of P215D
- Check engine light on
- Pump audible after switching off the engine
- DEF system warning, possibly a flat battery after standing
Common causes of P215D
- Most likelyOutput stage in the control module no longer switching off
- PossiblePump control line shorted so the pump receives power permanently
- Less likelyWelded contacts in the pump supply relay
Check the most likely causes first. Replacing parts by guesswork is the most expensive way to clear a code.
Parts involved
Reductant pumpReductant pump relayReductant control module
What each part of P215D means
| P | Powertrain system: engine, fuel system, ignition, emissions and transmission. |
| 2 | Generic code (second SAE range): it means the same on every make. |
| 1 | Area: fuel and air metering. |
| 5D | The exact fault in that area. |
What to do next
- Note P215D and any other codes stored with it: several codes together often point to one cause.
- Check for loose connectors and damaged wiring around the parts the code names.
- Check open recalls for your car: some faults are fixed for free by the dealer. Enter your VIN.
- Clear the code only after the repair. If it comes back, the fault is still there.
Buying a used car? Scan it for stored codes before you pay. A recently cleared memory can hide a problem.
Questions about P215D
What does P215D mean?
P215D means "Reductant Pump B Stuck On". P215D says the second DEF pump, called pump B or pump 2, keeps running or stays powered although the controller has commanded it off. It is a generic code, so it means the same on every make.
Is it safe to drive with P215D?
Drive gently and only to a workshop. With P215D the car can go into limp mode (reduced power) to protect itself.
Will P215D fail an emissions test?
Yes, it can. P215D is emissions-related, so most inspection programs fail a car while it is stored or while the check engine light is on.
How hard is P215D to fix?
Difficulty: medium. A typical repair takes 0.5 to 3 hours of work. This is a job for a workshop.
Will P215D clear itself after the repair?
Clear the code with a scanner after the repair. If the fault is fixed, it does not come back.