P22C5
Turbocharger Compressor Outlet Valve Control Circuit/Open
The drive circuit for the turbocharger compressor outlet valve (also called diverter valve or blow-off valve) is open. The valve releases boost pressure when the throttle closes to prevent compressor surge.
- Check engine light: Yes
- Emissions related: Yes
- Repair difficulty: medium
Symptoms
- Charge status indicator shows fault
- Charging may not start or interrupts
- Slower-than-expected charge rate
Common causes
Ordered by how often each turns out to be the cause.
- Solenoid winding openCommon
- Pin pushed back out of connector bodyLess likely
- Cracked solder joint inside the module or sensorLess likely
Parts involved
- Turbocharger
- Diverter Valve
P22C5 is a generic OBD-II code defined by SAE J2012. Exact wording and diagnostic procedure vary by manufacturer and model. Code definitions are drawn from the public-domain OBDex dataset; the workshop notes are our own.