Diagnostic Trouble Code Chart

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

HINT:

If a trouble code is displayed during the DTC check, inspect the trouble areas listed for that code.

TRANSPONDER KEY ECU DTC CHART

Immobilizer

IMMOBILIZER DIAGNOSTIC TROUBLE CODE CHART

DTC Code	Detection Item	Trouble Area
B2780	Push Switch / Key Unlock Warning Switch Malfunction	Transponder key ECU Unlock warning switch Harness or connector
B2784	Antenna Coil Open / Short	Transponder key ECU Transponder key amplifier Harness or connector
B2793	Transponder Chip Malfunction	Key
B2794	Unmatched Encryption Code	Key
B2795	Unmatched Key Code	Key
B2796	No Communication in Immobilizer System	Transponder key ECU-Key Harness or connector Transponder key amplifier
B2797	Communication Malfunction No. 1	Key Harness or connector Transponder key ECU Transponder key amplifier
B2798	Communication Malfunction No. 2	Key

ECM DTC CHART

HINT:

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

ECM

ECM DTC CHART

DTC Code	Detection Item	Trouble Area
B2799	Engine Immobilizer System Malfunction	Harness or connector Transponder key ECU ECM
B279A	Theft Deterrent System Communication Line High Fixation	Harness or connector Transponder key ECU ECM
B279C	Theft Deterrent System Presence Detection	ECM