Code Definition

B1795 — Lamp Headlamp Low-Beam Circuit Open

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

About B1795

B1795 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 B1795 is stored, the module has detected an open (broken or disconnected) electrical path in the monitored circuit; and a signal or supply voltage lower than the expected operating range.

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.

B1795 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) monitors the integrity of the low beam headlamp circuit by checking current draw and voltage feedback on the output side of the headlamp driver. DTC B1795 sets when the BCM detects an open circuit specifically in the low beam headlamp wiring or load path, meaning current cannot flow through the lamp when commanded on. The BCM may detect this through missing return current, lack of voltage drop across the load, or a feedback line that should be pulled to ground when the lamp is commanded but instead reads as open. When this code is set, one or both low beam headlam...

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