OBD Guide

P22C9

Turbocharger Compressor Outlet Valve Stuck Closed

Severity
⚠️ Medium
Can you drive?
Limited driving only, diagnose soon
Approx. repair cost
$56–278 (est.)

Symptoms

  • Reduced engine power
  • Increased fuel consumption
  • Uneven engine operation
  • Check Engine light comes on
  • Turbo lag (turbine response delay)

Causes

  • Mechanical stuck turbine valve
  • Control solenoid valve malfunction
  • Problems with the wiring harness to the valve
  • Contamination or carbon deposits on the valve
  • Engine control unit malfunction

How to Fix

  1. Check the mechanical condition of the turbine valve
  2. Test the control solenoid valve
  3. Check the integrity of the wiring harness and connections
  4. Clean or replace a stuck valve
  5. If necessary, replace the turbocharger assembly

Related codes

Error P22C9 by Vehicle Brand