Code Definition

B1026 (51) — Steering lock unit not programmed to keyless entry module

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

About B1026

B1026 is a manufacturer-specific body diagnostic trouble code recorded for Mazda vehicles. 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.

B1026 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

On Mazda vehicles equipped with push button start and electronic steering lock, the Keyless Entry Module (KEM) manages authentication between the key fob, the immobiliser, the ignition switch, and the electric Steering Lock Unit (SLU) fitted to the steering column. DTC B1026 sets when the KEM communicates with the SLU but determines that the SLU has not been coded to this vehicle, typically because a replacement SLU has been fitted and the on vehicle configuration procedure has not yet been performed. The SLU must store a matching security ID that pairs with the KEM and the PCM, and without th...

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