B2271 Code: Meaning, Causes, and Symptoms | OBD2 Codes

B2271 – Ignition Hold Monitor Malfunction

 

B2271 Possible Symptoms

 

Engine Light ON (or Service Engine Soon Warning Light)

 

B2271 Possible Causes

 

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

 

B2271 Description

 

This Diagnostic Trouble Code (DTC) is stored when a malfunction in the Ignition (IG) circuit or IG hold circuit in the Certification ECU (Smart Key ECU Assembly) is detected.