1999 Lexus SC 400FACTORY OEM SERVICE PROCEDURE

Engine Immobilizer DTCS

ENGINE IMMOBILIZER DIAGNOSTIC TROUBLE CODE (DTC) DEFINITIONS

DTC Definition
B2795 Unmatched Key Code
B2796 No Communication In Immobilizer System
B2797 Communication Malfunction No. 1
B2798 Communication Malfunction No. 2
Factory Service Tools

Use the Manual With the Right Hardware

Pair factory procedures with proven DIY tools so the instructions are easier to execute.

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When to See a Mechanic

Stop DIY work and contact a certified mechanic immediately if any of the following apply:

  • β€’ You smell fuel, burning insulation, or see smoke.
  • β€’ Brakes feel soft, pull hard to one side, or make grinding noises.
  • β€’ The engine overheats, stalls repeatedly, or misfires under load.
  • β€’ You are missing required tools, torque specs, or safe lifting equipment.
  • β€’ You are not confident in the next step or safety outcome.