P2D51
Air Assisted Injector Control Circuit
P2D51 is an OBD-II diagnostic trouble code meaning: Air Assisted Injector Control Circuit. Common causes: open or short circuit in control circuit, air injector malfunction. Estimated repair cost: $22–89.
Symptoms
- Unstable engine operation
- Increased fuel consumption
- Dips during acceleration
- Check Engine Light Is On
Causes
- Open or short circuit in control circuit
- Air injector malfunction
- Problems with the control unit
- Wiring harness damage
- Contact corrosion
How to Fix
- Check the integrity of the wiring to the injector
- Check injector resistance
- Inspect contacts for corrosion
- Diagnose the control unit
- If necessary, replace the air injector
Related codes
Error P2D51 by Vehicle Brand
FAQ
What does the P2D51 code mean?
P2D51 is an OBD-II diagnostic trouble code that indicates: Air Assisted Injector Control Circuit
What causes a P2D51 error code?
The most common causes of P2D51 include: Open or short circuit in control circuit; Air injector malfunction; Problems with the control unit; Wiring harness damage.
How do I fix a P2D51 diagnostic trouble code?
To fix P2D51: Check the integrity of the wiring to the injector. Check injector resistance. Inspect contacts for corrosion. For a complete diagnosis, use an OBD-II scanner.
Is it safe to drive with P2D51?
Yes, but get it checked soon
How much does it cost to fix P2D51?
The estimated repair cost for P2D51 is $22–89. Actual cost depends on your vehicle, location, and labor rates.
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