P22CF
Turbocharger Turbine Inlet Valve Control Circuit/Open
The drive circuit for the turbocharger turbine inlet valve is open. On sequential or two-stage charging the turbine inlet valve directs exhaust gas to the relevant turbine.
- Check engine light: Yes
- Emissions related: Yes
- Repair difficulty: hard
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
- Turbine Inlet Valve
P22CF 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.