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Home >> Lincoln >> 2018 >> MKZ Select, AWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 70 (Engine Controls - Powertrain DTC Charts & Descriptions (Except Diesel & Hybrid)) >> Diagnostic Trouble Code (DTC) Charts And Descriptions >> P0299 - Turbocharger/Supercharger A UNDERBOOST Condition

P0299 - Turbocharger/Supercharger A UNDERBOOST Condition

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DTC DESCRIPTION P0299 - TURBOCHARGER/SUPERCHARGER A UNDERBOOST CONDITION

Description:  This DTC sets when the actual TCBP value is less than the desired TCBP value by 27.6 kPa (4 psi) or more for 5 seconds, indicating an under boost condition.
Possible Causes: 
  • Damaged turbocharger (TC) wastegate regulating valve solenoid
  • TC wastegate regulating solenoid valve stuck
  • Wastegate stuck open
  • Wastegate control hose open or plugged
  • Air leak between turbocharger and throttle
Diagnostic Aids:  Check tubing for restrictions, cracks and incorrect fitting connections.
Check the turbocharger wastegate regulating valve solenoid for correct operation.
Application  Key On Engine Off  Key On Engine Running  Continuous Memory 
All GO to Pinpoint Test HN .