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Home >> Mercury >> 2009 >> Sable Premier, FWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 1255 (Engine Controls - Powertrain DTC Charts & Descriptions (Except Diesel & Hybrid)) >> DTC Diagnosis >> DTC P1227: - WASTEGATE Failed Closed (Over Pressure)

DTC P1227: - WASTEGATE Failed Closed (Over Pressure)

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DTC P1227: - WASTEGATE FAILED CLOSED (OVER PRESSURE)

Description:  Indicates that boost pressure is continuously higher than desired.
Possible Causes: 
  • EGR valve
  • MAF sensor
  • MAP 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 - - GO to Pinpoint Test KJ .