P00C5

Turbocharger/Supercharger B Turbine Overspeed

Severity

🔴 High

Can you drive?

Limited driving only, diagnose soon

Approx. repair cost

$167–556 (est.)

Symptoms

Loss of engine power
Unstable engine operation
Noise from the turbocharger (whining or whistling)
Turning on the Check Engine Light

Causes

Boost control valve (wastegate or VGT) malfunction
Seized or damaged turbine blades
Leaks in the boost system
Problems with the turbine control solenoid
Mechanical wear of turbocharger bearings

How to Fix

Diagnostics of the turbocharging system
Checking the condition of the turbocharger and its components
Testing the operation of the control valve and solenoids
Checking the tightness of the charging system
If necessary, replace or repair the turbocharger

Related codes

P00C4 P00C6 P0299