Archives: DTC Codes

What Does Code C1257 Mean? Diagnostic Trouble Code C1257 signifies that the Anti-lock Brake System (ABS) control module, often referred to as the Electronic Brake Control Module (EBCM), has detected a specific electrical fault within the circuit for the Rear Right (RR) ABS inlet valve coil. Specifically, the EBCM has identified a short circuit to […]

What Does Code C1258 Mean? The diagnostic trouble code C1258, “Speed Wheel LF Comparison Failure,” indicates that the Anti-lock Braking System (ABS) control module, often integrated with or communicating extensively with the Electronic Brake Control Module (EBCM) or the Powertrain Control Module (PCM), has detected an implausible or inconsistent signal from the Left Front (LF) […]

What Does Code C1259 Mean? DTC C1259 indicates a detected inconsistency in the Right Front (RF) wheel speed sensor signal compared to other wheel speed sensors or expected vehicle speed parameters. This code is typically set by the Anti-lock Braking System (ABS) control module (also known as the Electronic Brake Control Module, EBCM, or Hydraulic […]

What Does Code C1260 Mean? DTC C1260, indicating “Speed Wheel RR Comparison Failure,” signifies that the Anti-lock Brake System (ABS) control module, which often integrates Vehicle Stability Control (VSC) and Traction Control (TCS) functions, has detected an implausible or inconsistent signal from the Right Rear (RR) wheel speed sensor. The ABS module continuously monitors the […]

What Does Code C1261 Mean? The diagnostic trouble code C1261 signifies a Left Rear (LR) Wheel Speed Sensor Comparison Failure. This code is generated by the Anti-lock Braking System (ABS) control module, which is often integrated with the Traction Control System (TCS) and Vehicle Stability Control (VSC) modules (collectively referred to as the Brake Control […]

What Does Code C1262 Mean? DTC C1262 signifies a detected malfunction within the Anti-lock Brake System (ABS) Warning Lamp Relay Circuit. As a “C-code,” it indicates a fault primarily within the chassis systems, specifically monitored by the ABS Control Module (ACM) or Powertrain Control Module (PCM), depending on vehicle architecture. The ABS module is responsible […]

What Does Code C1263 Mean? DTC C1263 indicates an “Lamp Warning Relay Circuit Open” condition detected by the Anti-lock Brake System (ABS) control module, which may also be referred to as the Skid Control ECU or Vehicle Stability Control (VSC) module depending on the manufacturer. This code signifies that the control module has detected an […]

What Does Code C1264 Mean? DTC C1264 signifies a detected electrical fault within the “Lamp Warning Relay Circuit,” specifically indicating a short to battery. This diagnostic trouble code is typically generated by a chassis control module, such as the Electronic Brake Control Module (EBCM), Powertrain Control Module (PCM), or Body Control Module (BCM), depending on […]

What Does Code C1265 Mean? DTC C1265 indicates a malfunction within the control circuit of the Lamp Warning Relay, specifically detecting a short to ground condition. This code is typically set by the Anti-lock Braking System (ABS), Traction Control System (TCS), or Vehicle Stability Control (VSC) module, which monitors the integrity of circuits related to […]

What Does Code C1266 Mean? The diagnostic trouble code C1266 signifies an detected fault within the ABS Valve Power Relay Circuit. This indicates that the Anti-lock Braking System (ABS) control module, often integrated within the Electronic Brake Control Module (EBCM), has identified an electrical anomaly in the circuit responsible for supplying power to the solenoid […]