Archives: DTC Codes

What Does Code C1277 Mean? DTC C1277 indicates a detected fault within the electrical circuits or the plausibility of the signal outputs from the Steering Wheel Angle Sensor (SAS). This code specifically highlights an issue affecting both primary (Circuit 1) and secondary (Circuit 2) signal paths of the sensor. The Steering Wheel Angle Sensor is […]

What Does Code C1278 Mean? DTC C1278 indicates a fault detected in the signals from the Steering Angle Sensor (SAS) for both primary and secondary channels. Modern vehicles rely heavily on the SAS for critical safety and performance systems, including the Anti-lock Braking System (ABS), Electronic Stability Control (ESC), Traction Control System (TCS), Electric Power […]

What Does Code C1279 Mean? DTC C1279 indicates a general fault within the Yaw Rate Sensor circuit. The Yaw Rate Sensor is a critical component of a vehicle’s advanced safety systems, including the Anti-lock Braking System (ABS), Electronic Stability Program (ESP), Vehicle Stability Control (VSC), and Traction Control System (TCS). Its primary function is to […]

What Does Code C1280 Mean? Diagnostic Trouble Code (DTC) C1280 indicates a fault within the Yaw Rate Sensor’s signal circuit. The Yaw Rate Sensor is a critical component of a vehicle’s Electronic Stability Control (ESC) system, often referred to as ESP, VSC, AdvanceTrac, or Dynamic Stability Control (DSC). Its primary function is to measure the […]

What Does Code C1281 Mean? DTC C1281 indicates a malfunction within the lateral accelerometer circuit. The lateral accelerometer, often referred to as a G-sensor or yaw rate sensor, is a critical component of the vehicle’s stability control system (such as ABS, Traction Control System (TCS), Electronic Stability Program (ESP), or Vehicle Stability Control (VSC)). This […]

What Does Code C1282 Mean? The diagnostic trouble code C1282 signifies a Lateral Accelerometer Signal Fault within the vehicle’s electronic stability control (ESC) or anti-lock braking system (ABS). This code indicates that the Vehicle Stability Control Module (VSCM), often integrated within the ABS control module, has detected an implausible, inconsistent, or absent signal from the […]

What Does Code C1283 Mean? Diagnostic Trouble Code C1283, often categorized as a Chassis (C-code), indicates a “Switch Test Signal Failure” within a critical vehicle control system, most commonly the Anti-lock Braking System (ABS), Traction Control System (TCS), or Vehicle Stability Control (VSC) module. This code is set by the respective control module (e.g., the […]

What Does Code C1284 Mean? DTC C1284 indicates a detected electrical fault within the engine oil pressure switch or sensor circuit. This code is typically set by the Powertrain Control Module (PCM), Engine Control Module (ECM), or potentially another relevant control module (e.g., Body Control Module or Instrument Cluster Module, depending on vehicle architecture and […]

What Does Code C1285 Mean? Diagnostic Trouble Code C1285 indicates a malfunction within the electrical circuit of the brake booster solenoid. This code is typically set by the Powertrain Control Module (PCM), Engine Control Module (ECM), or a dedicated Brake Control Module (BCM/ABS module) when it detects an electrical anomaly within the solenoid’s control circuit. […]

What Does Code C1286 Mean? Diagnostic Trouble Code C1286, indicating “Booster Mechanical Failure,” signifies that the vehicle’s control module, typically the Electronic Brake Control Module (EBCM) or the Brake Control Module (BCM), has detected an anomaly within the brake booster system that suggests a physical defect rather than a simple vacuum supply issue. The brake […]