What does code P227B mean?

Q: What does code P227B mean?

Barometric Pressure Sensor C Circuit Range/Performance. P227B indicates that the powertrain control module has detected an out-of-range or performance fault in the electrical circuit for Barometric Pressure Sensor C, which is often a second or redundant barometric pressure sensor used for altitude and load calculations. The computer compares the sensor's signal against expected values from other pressure sensors and its own internal models, and it sets this code when the voltage or calculated pressure falls outside the acceptable range for a calibrated period.

DTC codes / P22xx · Fuel and air metering (injector circuits) / P227B

P227BBarometric Pressure Sensor C Circuit Range/Performance

P227B indicates that the powertrain control module has detected an out-of-range or performance fault in the electrical circuit for Barometric Pressure Sensor C, which is often a second or redundant barometric pressure sensor used for altitude and load calculations. The computer compares the sensor's signal against expected values from other pressure sensors and its own internal models, and it sets this code when the voltage or calculated pressure falls outside the acceptable range for a calibrated period.

SystemPowertrain

Code typeGeneric (all makes)

SeverityLow

Fix difficultyIntermediate

AreaFuel and air metering (injector circuits)

Guidance is general and written for all OBD-II vehicles. Exact tests and values vary by model, so confirm the fault before replacing parts.