Powertrain, generic (extended)

P2226 Barometric Pressure Sensor A Circuit

Check engine lightOn
EmissionsRelevant
Drive cycleNot required
Limp modeNo

P2226 is the general circuit code for barometric pressure sensor A, the sensor that tells the engine computer the outside air pressure for air-charge, fuel and boost calculations. Ford's OBD summary for 2024-2025 gasoline engines shows how the code appears in current software: every BARO fault is reported as P2226 plus a failure-type byte, -16 for a low voltage (formerly P2228), -17 for high (P2229), -92 for a plausibility error (P2227) and -1F for an erratic signal (P2230). The same list makes all four block auto start-stop. On Ford gasoline engines the sensor sits on the PCM circuit board. A plain P2226 without failure type is rare; sensor B has its own family from P222A. Expect the warning light and a default pressure value.

Likely causes

Fault of the barometric sensor built into the engine control module
Damaged wiring or loose connector on an external BARO sensor
5 V reference supply of the sensor pulled down by another faulty sensor

Symptoms

  • Check engine light
  • Auto start-stop no longer works
  • Failure-type suffix (-16, -17, -92, -1F) shown with the code on newer scan tools

Repair estimate

DifficultyMediumWorkshop job
Parts and labour€50–900
Time0.5–2.5 h

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

Parts involved

barometric pressure sensorsensor wiring

Related codes

P2227P2228P2229P2230P222A

References: fordservicecontent.com, newtonnet.co.uk, law.cornell.edu.