C1133 Code: Meaning, Causes, and Symptoms | OBD2 Codes

C1133 – Engine Signal 4

 

C1133 Possible Symptoms

 

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

 

C1133 Possible Causes

 

Faulty Engine Control Module (ECM),Faulty ABS Actuator and Electric Unit (Control Unit),Control Area Network (CAN) communication line,Blown Engine Control Module (ECM) fuse

 

C1133 Description

 

ABS Actuator and Electric Unit (Control Unit) and Engine Control Module (ECM) exchange the engine signal with Control Area Network (CAN) communication line. Major engine components are malfunctioning.