Code Definition

P3013 — Turbocharger bypass valve b shorted to positive

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

About P3013

P3013 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 P3013 is stored, the module has detected 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.

P3013 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 a short to battery voltage in the Turbocharger Bypass Valve 'B' circuit. This valve, also known as a diverter or wastegate bypass valve, regulates boost pressure by redirecting excess air. A short to positive can cause the valve to remain stuck in an open or closed position, leading to turbocharger inefficiency, overboost, or underboost conditions.

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