FixVault
Home › Lexus › 2007 › RX 400h AWD › Repair and Diagnosis › External Pages › Different car › Section 341 (Engine Immobilizer) › Engine Immobilizer System › Diagnostic Trouble Code Chart

Diagnostic Trouble Code Chart

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

TRANSPONDER KEY ECU DIAGNOSTIC TROUBLE CODE CHART 

DIAGNOSTIC TROUBLE CODE CHART

DTC Code 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. Wire harness
  2. Transponder key amplifier
  3. Transponder key ECU assembly
B2793  Transponder Chip Malfunction
  1. Key
B2794  Unmatched Encryption Code
  1. Key
B2795  Unmatched Key Code
  1. 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. Wire harness
  3. Transponder key amplifier
  4. Transponder key ECU assembly
B2798  Communication Malfunction No. 2
  1. Key

ECM DIAGNOSTIC TROUBLE CODE CHART 

ECM DIAGNOSTIC TROUBLE CODE CHART

DTC Code Detection Item Trouble Area
B2799  Engine Immobilizer System
  1. Wire harness
  2. ECM
NOTE: The DTCs for the immobilizer system are specified above. If the other codes are output, check the DTC(s) chart for the engine control system.
About FixVault