P056E

Cold Start Turbocharger/Supercharger Boost Control A Performance

Severity

⚠️ Medium

Can you drive?

Limited driving only, diagnose soon

Approx. repair cost

$56–222 (est.)

Symptoms

Reduced engine power
Unstable idling
Increased fuel consumption
Check Engine Light Illuminates

Causes

Boost control solenoid valve (solenoid) malfunction
Leaks in the boost system
Damaged or clogged vacuum tubes
Boost pressure sensor malfunction
Problems with wiring harness or contacts
Mechanical damage to the turbocharger/supercharger

How to Fix

Check the system for air leaks
Check the condition of vacuum tubes and connections
Check the operation of the boost control solenoid valve
Check the boost pressure sensor readings
Check the condition of the wiring harness and contacts
If necessary, replace faulty components

Related codes

P0299 P2563 P2262