Code Definition

B1246 — Dim Panel Potentiometer Switch Circuit Failure

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

About B1246

B1246 is a manufacturer-specific body diagnostic trouble code. It belongs to the B-prefix family of codes, which covers body, interior, airbag, or comfort-electronics faults.

When B1246 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.

B1246 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 dim panel potentiometer is the rotary dimmer control mounted on the dashboard or headlight switch assembly that allows the driver to adjust the brightness of the instrument cluster illumination and other panel backlighting. The switch is typically a variable resistor that returns a voltage between approximately 0V and 5V to the body control module or instrument cluster, with the module using that voltage to set a pulse width modulated output that feeds the illumination circuits. DTC B1246 is set when the control module detects an electrical fault in the potentiometer circuit, such as a sig...

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