Powertrain, generic (extended)

P2227 Barometric Pressure Sensor A Circuit Range/Performance

Check engine lightOn
EmissionsRelevant
Drive cycleRequired
Limp modePossible

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.

Likely causes

Ice or sludge in the charge air cooler on turbo engines in severe cold (GM 22-NA-007, 23-NA-002)
BARO sensor reading with an offset or drift
Faulty boost or manifold pressure sensor that skews the comparison
Engine control software that needs an update

Symptoms

  • Check engine light
  • Reduced power or hesitation in very cold weather on turbo engines
  • P0299 or misfire codes stored alongside

Repair estimate

DifficultyMediumWorkshop job
Parts and labour€80–700
Time0.5–3 h

Typical range across vehicles; the real cost depends on what the testing finds.

Parts involved

barometric pressure sensorsensor wiring

Related codes

P2226P2228P2229P2230P0106P0236P222F

References: newtonnet.co.uk, fordservicecontent.com, gsi.ext.gm.com, static.nhtsa.gov.