P22CA code meaning
Turbocharger Compressor Outlet Switching Valve Control Circuit/Open
Powertrain system Generic code P22xx codes Check engine light
What P22CA means
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.
P22CA at a glance
- Check engine lightYes, usually on
- Emissions testCan fail
- Limp modePossible
- Repair difficultyEasy, DIY possible
- Typical labor0.3 to 2 hours
- Clears after repairWhen cleared with a scanner
Symptoms of P22CA
- Check engine light on
- Boost changeover no longer happens, power limited
- Hesitation when accelerating through the switching speed
Common causes of P22CA
- Most likelySwitching valve connector loose or corroded
- PossibleBroken wire between module and switching valve
- PossibleOpen coil in the switching solenoid
- Less likelyFaulty output stage in the engine control module
Check the most likely causes first. Replacing parts by guesswork is the most expensive way to clear a code.
Parts involved
TurbochargerBoost switching valve
What each part of P22CA means
| P | Powertrain system: engine, fuel system, ignition, emissions and transmission. |
| 2 | Generic code (second SAE range): it means the same on every make. |
| 2 | Area: fuel and air metering (injector circuit). |
| CA | The exact fault in that area. |
What to do next
- Note P22CA and any other codes stored with it: several codes together often point to one cause.
- Check for loose connectors and damaged wiring around the parts the code names.
- Check open recalls for your car: some faults are fixed for free by the dealer. Enter your VIN.
- Clear the code only after the repair. If it comes back, the fault is still there.
Buying a used car? Scan it for stored codes before you pay. A recently cleared memory can hide a problem.
Questions about P22CA
What does P22CA mean?
P22CA means "Turbocharger Compressor Outlet Switching Valve Control Circuit/Open". P22CA reports an open drive circuit for the compressor outlet switching valve. It is a generic code, so it means the same on every make.
Is it safe to drive with P22CA?
Drive gently and only to a workshop. With P22CA the car can go into limp mode (reduced power) to protect itself.
Will P22CA fail an emissions test?
Yes, it can. P22CA is emissions-related, so most inspection programs fail a car while it is stored or while the check engine light is on.
How hard is P22CA to fix?
Difficulty: easy. A typical repair takes 0.3 to 2 hours of work. A careful DIY repair is possible with basic tools and a scanner.
Will P22CA clear itself after the repair?
Clear the code with a scanner after the repair. If the fault is fixed, it does not come back.