Code Definition

B2315 — Mirror Passenger Horizontal Feedback Potentiometer Circuit Short to Ground

System: Body  |  Type: Generic (OBD-II Standard)  |  Make: Generic

About B2315

B2315 is a generic (obd-ii standard) body diagnostic trouble code. It belongs to the B-prefix family of codes, which covers body, interior, airbag, or comfort-electronics faults.

When B2315 is stored, the module has detected a short-circuit (voltage pulled to ground or to supply) in the monitored circuit.

Scanning & clearing: Body (B) codes are often stored in the body control module, airbag module, or climate module. A basic OBD-II tool usually will not read body codes — an enhanced or OEM-level scan tool is typically required.

Because B2315 is a generic OBD-II code, its base definition is shared across manufacturers. The specific diagnostic steps, reference values, and repair procedures can vary by vehicle, and the TaT Diagnostic Assistant includes verified procedures submitted by working technicians.

Code Information

The Passenger Door Module or Body Control Module monitors the horizontal position feedback potentiometer inside the passenger side power mirror to track the mirror's left to right position for the memory mirror function. DTC B2315 is set when the module detects the horizontal feedback signal voltage has been pulled low to ground potential, typically below the minimum expected sensor value, indicating the signal wire is being grounded somewhere between the mirror and the module. The fault may be in the wiring harness, the mirror potentiometer itself, or in the module's input circuitry. When thi...

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