P2054 code meaning
Reductant Injection Valve Circuit Low (Bank 1 Unit 2)
Powertrain system Generic code P20xx codes Check engine light
What P2054 means
P2054 flags a ground short in the switched circuit of the second DEF injector in the Bank 1 line. GM's 2025 diesel table (25OBDG04B) checks DEF metering valve 2 for this with the key on, the engine not cranking and more than 11 V, then sets a Type A code after 30 of 60 samples. Deutz uses P2054 on EMR5 engines for metering unit 2 with failure type 11, voltage below normal. Ford's 2023 diesel summary lists P2054 next to the circuit checks of its single injector but defines it as a resistance deviation below minus 2 ohm, so on a Ford the code points to a coil whose resistance has drifted low rather than to a second valve. Typical causes are a pinched wire, a shorted coil or a wet connector; the affected valve stops dosing.
P2054 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 P2054
- MIL on
- Dosing at the affected valve stopped
- DEF warning message
Common causes of P2054
- Most likelyPinched or chafed wire to injector 2 touching ground
- PossibleCoil resistance too low due to shorted turns (Ford definition)
- Less likelyWater or DEF in the injector connector
Check the most likely causes first. Replacing parts by guesswork is the most expensive way to clear a code.
Parts involved
Reductant injection valve
What each part of P2054 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. |
| 54 | The exact fault in that area. |
What to do next
- Note P2054 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 P2054
What does P2054 mean?
P2054 means "Reductant Injection Valve Circuit Low (Bank 1 Unit 2)". P2054 flags a ground short in the switched circuit of the second DEF injector in the Bank 1 line. It is a generic code, so it means the same on every make.
Is it safe to drive with P2054?
Drive gently and only to a workshop. With P2054 the car can go into limp mode (reduced power) to protect itself.
Will P2054 fail an emissions test?
Yes, it can. P2054 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 P2054 to fix?
Difficulty: medium. A typical repair takes 0.5 to 3 hours of work. This is a job for a workshop.
Will P2054 clear itself after the repair?
Clear the code with a scanner after the repair. If the fault is fixed, it does not come back.