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
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.