DTC B2799: Engine Immobiliser System Malfunction: Description

This DTC is stored when one of the following occurs: 1) the ECM detects errors in its own communications with the transponder key ECU; 2) the ECM detects errors in the communication lines; or 3) the ECU communication ID between the transponder key ECU and ECM is different and an engine start is attempted.

Before troubleshooting for this DTC, make sure that no transponder key ECU DTCs are present. If present, troubleshoot the transponder key ECU DTCs first.

DTC No.	DTC Detection Condition	Trouble Area
B2799	One of the following conditions is met: Error in communication between ECM and transponder key ECU. Error in communication lines. Communication ID is different during communication with transponder key ECU.	Wire harness or connector ECM Transponder key ECU