B2394 Code: Meaning, Causes, and Symptoms | OBD2 Codes

B2394 – Flash To Pass / Optical Horn Switch Circuit Stuck


B2394 Possible Symptoms


Engine Light ON (or Service Engine Soon Warning Light)


B2394 Possible Causes


Faulty Multifunction Switch,Multifunction Switch harness is open or shorted,Multifunction Switch circuit poor electrical connection,Faulty Cluster


B2394 Description


The Cluster monitors the Flash To Pass / Optical Horn Switch Circuit. The Diagnostic Trouble Code (DTC) is set when the Cluster detects the Flash to Pass Switch Input circuit voltage is less than the expected value.