Code Definition

B1624 — Lamp Keypad Output Open Circuit

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

About B1624

B1624 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 B1624 is stored, the module has detected an open (broken or disconnected) electrical path 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.

B1624 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) supplies power to the illuminated keyless entry keypad mounted on the driver door pillar through a dedicated lamp output circuit. DTC B1624 sets when the BCM detects an open circuit condition on this output, meaning current flow has stopped and the expected load (the keypad LED elements) is no longer drawing current. This typically occurs when the wire breaks at the door jamb flex point, the connector pulls apart, or the LED elements inside the keypad fail open. When this code is set, the keypad backlighting will not illuminate at all in low light conditions, maki...

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