P004E

Turbocharger/Supercharger Boost Control A Circuit Intermittent/Erratic

Severity

⚠️ Medium

Can you drive?

Limited driving only, diagnose soon

Approx. repair cost

$56–222 (est.)

Symptoms

Reduced engine power
Unstable operation of the turbocharger/supercharger
Dips during acceleration
Increased fuel consumption

Causes

Open or damaged control circuit wiring harness
Turbine control solenoid malfunction
Mechanical damage to the turbocharger/supercharger
Boost pressure sensor malfunction
ECU problems

How to Fix

Check the control circuit wiring harness for breaks or damage.
Check the resistance and operation of the turbine control solenoid
Inspect the turbocharger/supercharger for mechanical damage
Check boost pressure sensor
If necessary, replace faulty components

Related codes

P004F P0234 P0235