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.