P2392

Diesel Intake Air Flow B Control Circuit Low

Severity

⚠️ Medium

Can you drive?

Yes, but get it checked soon

Approx. repair cost

$17–89 (est.)

Symptoms

Reduced engine power
Increased fuel consumption
Rough engine idling
Check Engine Light Illuminates
Problems starting the engine in cold weather

Causes

Open or short circuit in control circuit
Air flow sensor malfunction
Air control solenoid valve problems
Corrosion or poor contact in connectors
Engine control unit malfunction

How to Fix

Check the integrity of the air flow control circuit
Test the air flow sensor and its connectors
Check the operation of the control solenoid valve
Inspect the wiring harness for damage
If necessary, replace faulty components

Related codes

P2390 P2391 P2393