P2390

Diesel Intake Air Flow B Control Circuit/Open

Severity

⚠️ Medium

Can you drive?

Yes, but get it checked soon

Approx. repair cost

$17–89 (est.)

Symptoms

Check Engine light comes on
Reduced engine power
Deterioration in acceleration dynamics
Increased fuel consumption
Unstable operation at idle

Causes

Open or short circuit in wiring harness
Air flow sensor malfunction
Problems with the control solenoid valve
Corrosion of contacts or connectors
Engine control unit malfunction

How to Fix

Check the integrity of the wiring harness and connectors
Test the air flow sensor
Check the resistance and operation of the solenoid valve
Clean contacts from corrosion
If necessary, replace faulty components

Related codes

P2389 P2391 P2392