Code Definition

B1375 — Oil Change Lamp Circuit Open

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

About B1375

B1375 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 B1375 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.

B1375 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 oil change warning lamp is driven by the control module (typically the instrument cluster, Body Control Module, or PCM depending on the platform) and is illuminated when the oil life monitor calculates that the engine oil has reached the end of its useful life, or at a programmed mileage interval. DTC B1375 sets when the control module detects an open circuit on the oil change lamp drive line, meaning current cannot flow through the lamp filament or LED driver path when the lamp is commanded on. The control module typically performs a bulb check at key on, sweeping the output and verifying...

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