Code Definition

B2795 — Unrecognised key code

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

About B2795

B2795 is a generic (obd-ii standard) body diagnostic trouble code recorded for Lexus 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.

Because B2795 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 transponder key ECU, which forms part of the Lexus immobiliser system, compares the ID code transmitted by the key transponder against the codes registered in its memory each time the ignition is switched on. DTC B2795 is set when a key whose code has not been registered, or cannot be correctly read, is presented to the system, so the immobiliser does not find a valid match. Because the immobiliser must authenticate the key before allowing the engine to run, an unmatched key code prevents the ECM from enabling fuel and ignition. When this code is set the engine will typically crank but not...

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