C1426 Code: Meaning, Causes, and Symptoms | OBD2 Codes

C1426 – Stop Light Switch Off Stuck Malfunction


C1426 Possible Symptoms


Anti-Lock Brake System (ABS) Warning Light ON,Engine Light ON (or Service Engine Soon Warning Light)


C1426 Possible Causes


Blown Stop Light Switch Fuse,Faulty Stop Light Switch,Stop Light Switch harness is open or shorted,Stop Light Switch circuit poor electrical connection,Faulty Skid Control ECU


C1426 Description


The Skid Control ECU receives stop light switch signals and uses them to determine whether or not the brakes are applied. The Skid Control ECU has a detection circuit that it uses to detect a short in the stop light input line, or the ground line of the stop light circuit with the stop light switch on (brake pedal depressed). If the Skid Control ECU detects a short in this circuit, it will store the C1426 code.