P02CA

Turbocharger/Supercharger B Overboost Condition

Severity

🔴 High

Can you drive?

Limited driving only, diagnose soon

Approx. repair cost

$56–333 (est.)

Symptoms

Reduced engine power
Switching to limp mode
Unstable engine operation
Whistling or strange noises from the turbocharger

Causes

Turbocharger bypass valve malfunction
Blocked or damaged vacuum lines
Boost pressure sensor malfunction
Control unit software errors
Mechanical damage to the turbocharger

How to Fix

Check the condition of the bypass valve
Diagnose the tightness of the vacuum system
Check the operation of the boost pressure sensors
Scan the control unit for errors
If necessary, replace faulty components

Related codes

P0299 P2262 P2563