Code Definition

B0079 — Incorrect LHF side impact sensor installed

System: Body  |  Type: Generic (OBD-II Standard)  |  Make: Generic

About B0079

B0079 is a generic (obd-ii standard) body diagnostic trouble code. It belongs to the B-prefix family of codes, which covers body, interior, airbag, or comfort-electronics faults.

When B0079 is stored, the module has detected a sensor-related fault — the reported value from the named sensor is out of spec.

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.

Because B0079 is a generic OBD-II code, its base definition is shared across manufacturers. The specific diagnostic steps, reference values, and repair procedures can vary by vehicle, and the TaT Diagnostic Assistant includes verified procedures submitted by working technicians.

Code Information

The airbag control module (ACM) stores vehicle build data that identifies the correct part number, calibration, and communication protocol for every satellite sensor in the SRS network, including the Left Hand Front (LHF) side impact sensor. DTC B0079 sets when the sensor fitted to the LHF position identifies itself as the wrong type, wrong part number, or wrong calibration variant compared to the stored vehicle configuration, or when its response signature does not match the expected sensor family. This is a configuration fault rather than an electrical fault and almost always follows sensor ...

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