Code Definition

B1980 — Bulb - Outage Condition Detected

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

About B1980

B1980 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.

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.

B1980 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 (or dedicated lighting module on equipped vehicles) monitors current draw on the exterior lighting circuits using shunt resistors or hall effect sensors to detect when a bulb has burned out or its circuit has opened. With a healthy filament the module sees an expected current signature each time a lamp is commanded on, and when current is absent or below the threshold it flags an outage. DTC B1980 sets as a generic indicator that the module has detected at least one bulb outage condition on a monitored lighting circuit, typically without specifying which lamp (vehicle s...

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