P2227Barometric Pressure Sensor A Circuit Range/Performance
- Generic OBD-II code · Powertrain
- Turns on the check-engine light
- Matters for the ITP
- Can trigger limp mode
- Needs a drive cycle to confirm a fix
- How the car detects it
- P2227 means the barometric reading is electrically fine but does not fit the other pressure signals. Ford's 2012 summary compares BARO, throttle inlet and manifold pressure after at least 10 s engine-off; the sensor that disagrees with the other two is blamed. While driving at low airflow BARO must stay within 5.5 inHg of throttle inlet pressure. Ford's 2023 diesels set P2227 for a reading below 50 kPa held for 1 s. GM's 2018 diesel tables run the same three-way check at idle and before start, plus a 50-115 kPa window, as Type B. GM bulletins 22-NA-007 (Cruze 1.4 turbo) and 23-NA-002 (Silverado/Sierra 2.7 L) trace P2227 with P0299 to ice in the charge air cooler; the fix is new ECM software plus a baffle.
- What you may notice
- Check engine light
- Reduced power or hesitation in very cold weather on turbo engines
- P0299 or misfire codes stored alongside
- Likely causes
- LikelyIce or sludge in the charge air cooler on turbo engines in severe cold (GM 22-NA-007, 23-NA-002)
- PossibleBARO sensor reading with an offset or drift
- PossibleFaulty boost or manifold pressure sensor that skews the comparison
- RareEngine control software that needs an update
- Inspection (ITP)
- Matters for the ITP. While the check-engine light is on, the car fails the emissions check.
- Repair
- Medium · Usually a job for a workshop.Typical cost: €80 – €700
- Related codes
Explanation from obdex (CC0), exactly as the app shows it. Guidance only; confirm with a workshop.