P02CB

Turbocharger/Supercharger B Underboost Condition

Severity

⚠️ Medium

Can you drive?

Limited driving only, diagnose soon

Approx. repair cost

$56–333 (est.)

Symptoms

Reduced engine power
Increased fuel consumption
Unstable engine operation
Noises from the turbocharger

Causes

Air leaks in the intake system
Turbocharger/Supercharger B fault
Problems with vacuum hoses
Turbocharger control valve malfunction
Intercooler is dirty or damaged

How to Fix

Check the intake system for air leaks
Diagnose turbocharger/supercharger B
Check vacuum hoses and valves
Clean or replace intercooler
Check the operation of the turbocharger control system

Related codes

P0299 P02CA P02CC