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P1228 - WASTEGATE Failed Open (Under Pressure)

DTC DESCRIPTION P1228 - WASTEGATE FAILED OPEN (UNDER PRESSURE)

Description:  This DTC sets when the boost pressure is lower than desired.
Possible Causes: 
  • Manifold absolute pressure (MAP) sensor concerns
  • Supercharger bypass actuator stuck open
Diagnostic Aids:  This DTC is informational only and may be accompanied by other DTCs. Diagnose all other DTCs first.
Application  Key On Engine Off  Key On Engine Running  Continuous Memory 
All GO to Pinpoint Test KJ.