Archives: DTC Codes

What Does Code C1237 Mean? DTC C1237 signifies a malfunction within the vehicle’s Anti-lock Brake System (ABS) where the ABS control module, often integrated with the Vehicle Stability Control (VSC) and Traction Control System (TCS) module, detects an absence or an implausible signal from one of the rear wheel speed sensors. Specifically, the “Rear Input […]

What Does Code C1238 Mean? DTC C1238 signifies an electrical fault detected by the Antilock Braking System (ABS) control module (often referred to as the Electronic Brake Control Module or EBCM) within the input circuit for the hydraulic pressure differential switch. This switch is a critical safety component designed to monitor for a significant pressure […]

What Does Code C1239 Mean? Diagnostic Trouble Code (DTC) C1239 indicates an “ABS Hydraulic Pressure Differential Switch Input Open Circuit.” This signifies that the Anti-lock Braking System (ABS) control module has detected an open circuit condition in the electrical signal path originating from the hydraulic pressure differential switch. This switch is a critical safety component, […]

What Does Code C1240 Mean? Diagnostic Trouble Code (DTC) C1240 signifies that the Anti-lock Braking System (ABS) control module has detected an electrical short circuit to battery voltage on the input circuit of the ABS Hydraulic Pressure Differential Switch. This switch, often referred to as a pressure warning switch or proportioning valve switch in some […]

What Does Code C1241 Mean? DTC C1241 indicates an “ABS Hydraulic Pressure Differential Switch Input Short Circuit To Ground.” This code specifically points to an electrical fault within the Anti-lock Braking System (ABS) related to the hydraulic pressure differential switch circuit. The ABS Hydraulic Pressure Differential Switch is a critical component, typically integrated into the […]

What Does Code C1242 Mean? DTC C1242 signifies an electrical malfunction within the Anti-lock Braking System (ABS) module related to the outlet valve coil circuit for the left rear (LR) wheel. In an ABS system, hydraulic control units (HCUs) contain a series of solenoid valves (inlet and outlet) responsible for modulating brake fluid pressure to […]

What Does Code C1243 Mean? DTC C1243 signifies an electrical fault within the Anti-lock Braking System (ABS), specifically indicating an “ABS Outlet Valve Coil LR Circuit Open.” This code is set when the ABS Control Module (also known as the Electronic Brake Control Module or EBCM) detects an open circuit condition in the electrical circuit […]

What Does Code C1244 Mean? DTC C1244 signifies an issue with the ABS Outlet Valve Coil LR Circuit Short To Battery. This diagnostic trouble code is set by the Anti-lock Braking System (ABS) control module, also known as the Electronic Brake Control Module (EBCM) or integrated into the Hydraulic Control Unit (HCU). The ABS module […]

What Does Code C1245 Mean? Diagnostic Trouble Code C1245 signifies an issue within the Anti-lock Braking System (ABS), specifically indicating a “Left Rear (LR) Outlet Valve Coil Circuit Short To Ground.” This code is set by the Electronic Brake Control Module (EBCM), also often referred to as the ABS Control Module. The EBCM is responsible […]

What Does Code C1246 Mean? DTC C1246 signifies an electrical fault detected by the Anti-lock Brake System (ABS) module, also known as the Electronic Brake Control Module (EBCM), within the circuit controlling the Rear Right (RR) ABS outlet valve coil. The ABS system is designed to prevent wheel lock-up during hard braking by rapidly modulating […]