Code Definition

P3015 — Fuel bypass valve shorted to positive

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

About P3015

P3015 is a manufacturer-specific powertrain diagnostic trouble code recorded for Audi vehicles. It belongs to the P-prefix family of codes, which covers engine, transmission, emissions, or fuel-system faults.

When P3015 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.

P3015 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 fuel bypass valve circuit. The fuel bypass valve regulates fuel pressure or flow, and a short to positive can cause it to remain continuously activated, leading to improper fuel delivery and possible drivability issues.

Quick Facts