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P1227 - WASTEGATE Failed Closed (Over Pressure)

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P1227 - WASTEGATE FAILED CLOSED (OVER PRESSURE)

Description:  Indicates that boost pressure is continuously higher than desired.
Possible Causes: 
  • EGR valve
  • MAF sensor
  • SIP sensor
  • Supercharger bypass actuator stuck closed
  • Supercharger
Diagnostic Aids:  This DTC is informational only and it may be accompanied by other DTCs. Diagnose other DTCs first.
Application  Key On Engine Off  Key On Engine Running  Continuous Memory 
All   - - refer to PINPOINT TEST KJ .