P20FA code meaning
Reductant Pump B Control Circuit/Open
Powertrain system Generic code P20xx codes Check engine light
What P20FA means
P20FA means the controller has found an open or otherwise faulty drive circuit for the second reductant (DEF/AdBlue) pump, called pump B or pump 2. No public service text explains which physical pump carries this letter; it is a driver channel of its own, separate from pump A (P208A). Ford stores P20FA together with P20FC and P20FD on 2023–2024 Super Duty and F-650/F-750 trucks with the 6.7L diesel (SSM 51891 and 52299, MIL lit) and asks technicians to check two connectors for seating and three more for water ingress and corrosion before normal diagnosis. FCA lists it as Reductant Pump 2 Control Circuit/Open for 3.0L EcoDiesel models and counts it among the faults that start the Service DEF countdown. With the pump unpowered, dosing stalls and NOx output climbs.
P20FA 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 P20FA
- Malfunction indicator lamp on
- Service DEF or AdBlue warning with countdown to restart lockout
- Other SCR codes stored at the same time (P208A, P20FC, P20FD)
Common causes of P20FA
- Most likelyWater ingress or corrosion in the pump B connectors or harness
- PossibleConnector not fully latched after assembly or repair
- PossibleOpen winding or internal break in pump B
- Less likelyFaulty output stage in the engine or DEF control module
Check the most likely causes first. Replacing parts by guesswork is the most expensive way to clear a code.
Parts involved
Reductant pumpWiring harness
What each part of P20FA means
| P | Powertrain system: engine, fuel system, ignition, emissions and transmission. |
| 2 | Generic code (second SAE range): it means the same on every make. |
| 0 | Area: fuel and air metering and auxiliary emission controls. |
| FA | The exact fault in that area. |
What to do next
- Note P20FA 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 P20FA
What does P20FA mean?
P20FA means "Reductant Pump B Control Circuit/Open". P20FA means the controller has found an open or otherwise faulty drive circuit for the second reductant (DEF/AdBlue) pump, called pump B or pump 2. It is a generic code, so it means the same on every make.
Is it safe to drive with P20FA?
Drive gently and only to a workshop. With P20FA the car can go into limp mode (reduced power) to protect itself.
Will P20FA fail an emissions test?
Yes, it can. P20FA 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 P20FA to fix?
Difficulty: medium. A typical repair takes 0.5 to 3 hours of work. This is a job for a workshop.
Will P20FA clear itself after the repair?
Clear the code with a scanner after the repair. If the fault is fixed, it does not come back.