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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 >> P0034 - Turbocharger/Supercharger Bypass Valve A Control Circuit Low

P0034 - Turbocharger/Supercharger Bypass Valve A Control Circuit Low

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DTC DESCRIPTION P0034 - TURBOCHARGER/SUPERCHARGER BYPASS VALVE A CONTROL CIRCUIT LOW

Description:  This DTC sets when the PCM detects a short to ground in the TCBY circuit.
Possible Causes: 
  • Damaged turbocharger bypass (TCBY) valve
  • TCBY circuit short to ground
  • Damaged harness connector
  • Damaged harness
Diagnostic Aids:  Check the harness for intermittent concerns, incorrect connections, routing, alterations and damage due to contact with other components.
This DTC only sets when the valve is commanded closed.
Application  Key On Engine Off  Key On Engine Running  Continuous Memory 
All GO to Pinpoint Test HN .