B2797 Code: Meaning, Causes, and Symptoms | OBD2 Codes

B2797 – Communication Malfunction No. 1 Immobilizer System


B2797 Possible Symptoms


Engine Light ON (or Service Engine Soon Warning Light)


B2797 Possible Causes


Faulty Key,Faulty transponder key amplifier,Faulty transponder key ECU assembly,transponder key amplifier wire harness


B2797 Description


This Diagnostic Trouble Code (DTC) is output when a communication error occurs between the key slot and transponder key Electronic Control Unit (ECU). A possible reason for the communication error is that noise is occurring on the communication line.