Code Definition

B1792 — Autolamp Sensor Input Circuit Short To Battery

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

About B1792

B1792 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 B1792 is stored, the module has detected a short-circuit (voltage pulled to ground or to supply) in the monitored circuit; and a sensor-related fault — the reported value from the named sensor is out of spec.

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.

B1792 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 Body Control Module (BCM) monitors the autolamp sensor input circuit so that the exterior lighting can be controlled automatically based on ambient light. The autolamp sensor is a photocell typically mounted on top of the dashboard under a translucent dome and returns a low voltage signal to the BCM that varies with light level. DTC B1792 is set when the BCM detects that the autolamp sensor input has been shorted to battery voltage, meaning the signal pin is reading near full battery potential rather than the expected variable voltage between 0V and 5V. When this code is set, the autolamp ...

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