Code Definition

P1915 — Reverse Switch Circuit Malfunction

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

About P1915

P1915 is a manufacturer-specific powertrain diagnostic trouble code. It belongs to the P-prefix family of codes, which covers engine, transmission, emissions, or fuel-system faults.

When P1915 is stored, the module has detected an electrical-circuit fault in the wiring, connector, or driver associated with the named component.

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.

P1915 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 P1915 fault code indicates that the Transmission Control Module (TCM) or Powertrain Control Module (PCM) has detected a malfunction in the Reverse Switch Circuit. This switch is responsible for detecting when the transmission is in reverse and activating related functions, such as reverse lights and transmission control adjustments. A circuit malfunction means the signal from the reverse switch is out of range, intermittent, or missing.

Quick Facts