Code Definition

P3014 — Turbocharger bypass valve b circuit open or shorted to ground

System: Powertrain  |  Type: Manufacturer-Specific  |  Make: Volkswagen

About P3014

P3014 is a manufacturer-specific powertrain diagnostic trouble code recorded for Volkswagen vehicles. It belongs to the P-prefix family of codes, which covers engine, transmission, emissions, or fuel-system faults.

When P3014 is stored, the module has detected an open (broken or disconnected) electrical path in the monitored circuit; and a short-circuit (voltage pulled to ground or to supply) in the monitored circuit.

Scanning & clearing: A generic OBD-II scan tool will usually read and clear powertrain (P) codes. For live data, freeze-frame capture, and bi-directional tests you may need a more capable scan tool that supports the vehicle's ECM protocol.

P3014 is a manufacturer-specific code. The same code string on a different make may have a different meaning. Always confirm the code's definition against the vehicle's service information for the specific make and model under test.

Code Information

The engine control module (ECM) sets this code when it detects an open circuit or a short to ground in the Turbocharger Bypass Valve 'B' control circuit. This valve, also known as a diverter or wastegate bypass valve, helps regulate boost pressure by diverting excess air away from the turbocharger. A circuit fault can cause improper boost control, leading to reduced engine performance or overboost/underboost conditions.

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