Code Definition

B1379 — Oil Change Reset Button Circuit Short To Ground

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

About B1379

B1379 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 B1379 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.

B1379 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 oil change reset button is a momentary contact switch that the driver presses to clear the maintenance reminder lamp and reset the service interval counter after an oil change. The control module reads the button by holding the input pin at a reference voltage through an internal pull up resistor and watching for the line to be pulled to ground when the button is pressed. DTC B1379 sets when the module sees the button input held at ground potential continuously, longer than a normal button press would last, indicating the input wire is shorted to ground externally rather than only when the...

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