|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.