B2274 Code: Meaning, Causes, and Symptoms | OBD2 Codes

B2274 – ACC Monitor Malfunction


B2274 Possible Symptoms


Engine Light ON (or Service Engine Soon Warning Light)


B2274 Possible Causes


Faulty ACC Relay,Faulty Certification ECU (Smart Key ECU Assembly),Certification ECU harness is open or shorted,Certification ECU circuit poor electrical connection


B2274 Description


This Diagnostic Trouble Code (DTC) is stored when a malfunction in the ACC output circuit is detected. The ACC output circuit is the circuit that goes from the ACC output terminal of the Certification ECU (Smart Key ECU Assembly) to the ACC Relay.