P06FE

Cold Start Diesel Intake Air Flow Control Performance

Severity

⚠️ Medium

Can you drive?

Yes, but get it checked soon

Approx. repair cost

$17–89 (est.)

Symptoms

Difficult cold start
Increased exhaust smoke during startup
Unstable idling
Reduced engine power
Increased fuel consumption

Causes

Air control valve malfunction
Clogged air ducts
Problems with the air temperature sensor
Electrical wiring fault
Control unit software error

How to Fix

Check the condition of the air channels
Diagnose the air control valve
Check air temperature sensor
Check the integrity of the electrical wiring
Update ECU software

Related codes

P06FF P06FD P06FC