P226B

Turbocharger/Supercharger A Boost Pressure Too High - Mechanical

Severity

🔴 High

Can you drive?

Do not drive — repair immediately

Approx. repair cost

$56–278 (est.)

Symptoms

Reduced engine power
Black smoke from the exhaust pipe
Noise or whistle from the turbocharger
Uneven engine operation
Check Engine Light Is On

Causes

Wastegate jammed
Turbine vacuum regulator malfunction
Mechanical damage to the turbocharger
Contamination or blockage of the charging system
Errors in ECU software

How to Fix

Checking the operation of the bypass valve
Diagnostics of the vacuum turbine control system
Inspect the turbocharger for damage
Cleaning or replacing components of the charging system
Updating the ECU firmware if necessary

Related codes

P226A P226C P226D