Code Definition

B1830 — Door Unlock Disarm Switch Circuit Failure

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

About B1830

B1830 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 B1830 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.

B1830 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) on Ford vehicles equipped with the Passive Anti-Theft System (PATS) monitors the Door Unlock Disarm Switch, also referred to as the driver reset switch, which provides a signal to disarm the anti-theft alarm when the driver door is unlocked using the key cylinder. DTC B1830 is set when the BCM detects an electrical fault in the disarm switch circuit, such as an open, short to ground, or short to power, that prevents the BCM from receiving a valid switch state. The disarm switch is typically a pair of contacts integrated into the driver door key lock cylinder assem...

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