P222ABarometric Pressure Sensor B Circuit
- Generic OBD-II code · Powertrain
- Turns on the check-engine light
- Matters for the ITP
- How the car detects it
- P222A is the general circuit code for a second barometric pressure sensor, B. Only some engines carry one. GM's tables for the 3.0 L twin-turbo V6 (LGW, 2018) and for 2023-2024 twin-throttle engines monitor such a sensor B, but they report its circuit faults with the more specific codes P222C (low) and P222D (high) and do not use P222A. No maker documents P222A publicly. Read it as an unspecified electrical fault of sensor B, comparable to P2226 for sensor A, which Ford now stores with a failure-type byte that tells the type of fault. CARB requires circuit monitoring of every input sensor used by an emission-relevant function. Check wiring, connector and the 5 V supply; the engine usually keeps running on sensor A or a model value.
- What you may notice
- Check engine light
- Usually no noticeable change in how the engine runs
- Likely causes
- LikelyDamaged wiring or corroded connector at sensor B
- PossibleBarometric pressure sensor B defective
- RareFault in the shared 5 V sensor supply
- Inspection (ITP)
- Matters for the ITP. While the check-engine light is on, the car fails the emissions check.
- Repair
- Medium · Often possible to do yourself.Typical cost: €40 – €350
- Related codes
Explanation from obdex (CC0), exactly as the app shows it. Guidance only; confirm with a workshop.