P22CATurbocharger Compressor Outlet Switching Valve Control Circuit/Open
- Generic OBD-II code · Powertrain
- Turns on the check-engine light
- Matters for the ITP
- Can trigger limp mode
- How the car detects it
- P22CA reports an open drive circuit for the compressor outlet switching valve. In two-stage or register boost systems the outlet flap is often moved by vacuum or pressure, and this electrically driven switching valve decides when that actuating medium reaches it; Ford's two-stage patent notes such valves may be worked electrically or by vacuum. With the circuit open, the switching valve stays in its rest position and the outlet flap no longer changes over. Nissan names the part on the Cummins 5.0 V8 diesel of the 2016 Titan XD (TC outlet switching valve, see P22CE), but no manufacturer publicly documents P22CA. The module detects the fault electrically with the output off, so it is independent of driving style. Check plug, harness and coil resistance first.
- What you may notice
- Check engine light on
- Boost changeover no longer happens, power limited
- Hesitation when accelerating through the switching speed
- Likely causes
- LikelySwitching valve connector loose or corroded
- PossibleBroken wire between module and switching valve
- PossibleOpen coil in the switching solenoid
- RareFaulty output stage in the engine control module
- Inspection (ITP)
- Matters for the ITP. While the check-engine light is on, the car fails the emissions check.
- Repair
- Easy · Often possible to do yourself.Typical cost: €30 – €300
- Related codes
Explanation from obdex (CC0), exactly as the app shows it. Guidance only; confirm with a workshop.