P2D51

Air Assisted Injector Control Circuit

Severity

⚠️ Medium

Can you drive?

Yes, but get it checked soon

Approx. repair cost

$22–89 (est.)

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

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