P0034 – Turbocharger/Supercharger Bypass Valve A Control Circuit Low

•  Damaged turbocharger bypass (TCBY) valve
•  TCBY circuit short to ground
•  Damaged harness connector
• Damaged harness

P0034 – Turbocharger/Supercharger Bypass Valve A Control Circuit Low
Description:                 The powertrain control module (PCM) continuously monitors the TCBY circuit for concerns.
This DTC sets when the PCM detects a short to ground in the 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.

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