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P2227 - Barometric Pressure Sensor A Circuit Range/Performance

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P2227 - BAROMETRIC PRESSURE SENSOR A CIRCUIT RANGE/PERFORMANCE

Description:  This DTC sets when the PCM detects that the barometric pressure (BARO) sensor reading is less than a calibrated value at key on engine off (KOEO).
Possible Causes: 
  • Damaged BARO sensor
  • Damaged PCM
Diagnostic Aids:  The presence of this DTC may indicate that the vehicle is operating in derate mode and may experience a loss of power.
The BARO sensor is integral to the PCM. A BARO reading less than 50 kPa (7.25 psi) indicates a concern.
Clear the PCM DTCs. Repeat the self-test. If the DTC is retrieved again, install a new PCM. Refer to FLASH ELECTRICALLY ERASABLE PROGRAMMABLE READ ONLY MEMORY (EEPROM) .
Application  Key On Engine Off  Key On Engine Running  Continuous Memory 
All Refer to the Description, Possible Causes and Diagnostic Aids for the DTC.