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Diagnostic Trouble Code Table

WARNING: This page is about a different car, the 2008 Lexus RX 350. However, it is still accessible from the selected car via links, so may be relevant.

If a trouble code is displayed during the DTC check, check the circuit listed for that code. For details of each code, refer to the information mentioned below the "DTC No." in the DTC table.

  1. TRANSPONDER KEY ECU DIAGNOSTIC TROUBLE CODE TABLE: 
    TRANSPONDER KEY ECU DIAGNOSTIC TROUBLE CODE TABLE

    DTC No. Detection Item Trouble Area
    B2780  Push Switch/Key Unlock Warning Switch Malfunction
    1. Unlock warning switch assembly
    2. Wire harness
    3. Transponder key ECU assembly
    B2784  Antenna Coil Open/Short
    1. Transponder key amplifier
    2. Wire harness
    3. Transponder key ECU assembly
    B2793  Transponder Chip Malfunction Key
    B2794  Unmatched Encryption Code Key
    B2795  Unmatched Key Code Key
    B2796  No Communication in Immobilizer System
    1. Key
    2. Transponder key amplifier
    3. Wire harness
    4. Transponder key ECU assembly
    B2797  Communication Malfunction No. 1
    1. Key
    2. Transponder key amplifier
    3. Wire harness
    4. Transponder key ECU assembly
    B2798  Communication Malfunction No. 2
    1. Key
    2. Transponder key amplifier
    3. Wire harness
    4. Transponder key ECU assembly
  2. ECM DIAGNOSTIC TROUBLE CODE TABLE: 
    ECM DIAGNOSTIC TROUBLE CODE TABLE

    DTC No. Detection Item Trouble Area
    B2799  Engine Immobilizer System
    1. Wire harness
    2. Transponder key ECU assembly
    3. ECM

    HINT:

    The DTCs for the immobilizer system are specified above. If other codes are output, check the DTC chart for the SFI system.