Code Definition

B1051 — Driver Airbag Module Circuit Short to Ground

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

About B1051

B1051 is a manufacturer-specific body diagnostic trouble code recorded for Nissan vehicles. It belongs to the B-prefix family of codes, which covers body, interior, airbag, or comfort-electronics faults.

When B1051 is stored, the module has detected a short-circuit (voltage pulled to ground or to supply) 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.

B1051 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 SRS control unit (airbag diagnostic sensor unit) continuously monitors the resistance of the driver airbag squib loop (DR1 circuit), which runs from the control unit through the spiral cable (clock spring) in the steering column to the inflator in the driver airbag module. DTC B1049 sets when the module detects an open circuit (excessively high resistance) in this loop, typically above the Nissan specified threshold of around 3.0 to 3.5 ohms upper limit, while the ignition is ON, system voltage is within range, and the condition persists past the calibrated timeout. When this code is store...

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