Code Definition

B1680 — Alarm Panic Input Circuit Short To Ground

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

About B1680

B1680 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 B1680 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.

B1680 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

B1680 indicates that the Body Control Module (BCM) or anti theft control module has detected the alarm panic input circuit shorted to ground. The panic input is normally pulled to a defined reference state by the keyless entry receiver or hardwired panic switch and only briefly grounded when the panic feature is activated. When the module sees a continuous ground on the input, it interprets the condition as a stuck active or shorted state and stores this code. Typical symptoms include the panic alarm being triggered repeatedly without user input, the security warning lamp illuminating, and the...

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