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Home >> Toyota >> 2012 >> Sienna SE >> Repair and Diagnosis (Single Page) >> Body & Frame >> Door Locks >> Engine Immobiliser System (W/O Smart Key) (Diagnostic Codes & Circuit Tests) >> ENGINE IMMOBILISER SYSTEM (w/o Smart Key System) >> DTC B2796: No Communication in Immobiliser System; DTC B2798: Communication Malfunction No. 2 >> Description

DTC B2796: No Communication in Immobiliser System; DTC B2798: Communication Malfunction No. 2: Description

These DTCs are stored if a key that does not have a transponder chip is inserted into the ignition key cylinder or if communication between the key and the transponder key ECU is impossible.

DTC No. DTC Detection Condition Trouble Area
B2796 The key code cannot be transmitted.
  • Key
  • Transponder key amplifier
  • Transponder key ECU
B2798 Key code identification cannot be completed within the specified time (0.15 to 0.5 seconds).
  • Key
  • Transponder key amplifier
  • Transponder key ECU