P226C

Turbocharger Boost Control A Slow Response

Severity

⚠️ Medium

Can you drive?

Limited driving only, diagnose soon

Approx. repair cost

$17–89 (est.)

Symptoms

Reduced engine power
Noticeable delay during acceleration
Unstable turbine operation
Increased fuel consumption
Possible black smoke from exhaust

Causes

Jamming of the mechanism for changing the turbine geometry
Leaks in the vacuum system
Vacuum pump malfunction
Problems with the turbine control solenoid valve
Dirty or damaged boost pressure sensor

How to Fix

Check vacuum lines for leaks
Clean the mechanism for changing turbine geometry
Check the operation of the vacuum pump
Test the control solenoid valve
Check boost pressure sensor

Related codes

P226D P226B P0299