B2798 Code: Meaning, Causes, and Symptoms | OBD2 Codes

B2798 – Communication Malfunction No. 2 Immobilizer System


B2798 Possible Symptoms


Engine Light ON (or Service Engine Soon Warning Light)


B2798 Possible Causes


faulty key


B2798 Description


This code is stored in the memory when a key that does not have a transponder chip is inserted or if communication between the key and transponder key ECU assy is impossible.