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
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.