Code Definition

B1575 — Lamp Park Input Circuit Failure

System: Body  |  Type: Manufacturer-Specific  |  Make: Ford

About B1575

B1575 is a manufacturer-specific body diagnostic trouble code recorded for Ford vehicles. It belongs to the B-prefix family of codes, which covers body, interior, airbag, or comfort-electronics faults.

When B1575 is stored, the module has detected an electrical-circuit fault in the wiring, connector, or driver associated with the named component.

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.

B1575 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 B1575 fault code is set by the Body Control Module (BCM) when it detects a failure in the lamp park input circuit. This circuit carries the signal from the headlight switch or multifunction switch to the BCM, indicating when the operator has selected the park lamp position. The BCM continuously monitors this input for proper voltage levels and circuit integrity, and sets B1575 when the signal is out of expected range, missing, stuck high, or stuck low. When this code is active, the parking lamps may fail to illuminate when commanded, may stay on continuously, or the BCM may default to a fa...

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