Archives: DTC Codes

What Does Code C1126 Mean? The diagnostic trouble code C1126 indicates a malfunction within the Cruise Control Command Switch Assembly circuit. This code is set by the vehicle’s Powertrain Control Module (PCM), or in some architectures, the Body Control Module (BCM) or a dedicated Cruise Control Module. The PCM constantly monitors the electrical signals originating […]

What Does Code C1127 Mean? DTC C1127 signifies a detected fault within the Cruise Control Deactivator Brake Switch circuit. The Powertrain Control Module (PCM), also known as the Engine Control Module (ECM) in some architectures, continuously monitors the electrical state of various inputs crucial for vehicle operation and safety. In the context of cruise control, […]

What Does Code C1132 Mean? Diagnostic Trouble Code C1132 specifically indicates a fault within the Clutch Position Sensor (CPS) circuit where the Powertrain Control Module (PCM) or Engine Control Module (ECM) has detected a short circuit to ground. The Clutch Position Sensor provides critical input to the PCM regarding the clutch pedal’s state – whether […]

What Does Code C1133 Mean? DTC C1133 indicates a detected electrical anomaly within the Clutch Pedal Position (CPP) sensor circuit, specifically a short circuit to battery voltage. The Powertrain Control Module (PCM), also referred to as the Engine Control Module (ECM) or other specific control module (e.g., Body Control Module or Transmission Control Module depending […]

What Does Code C1134 Mean? Diagnostic Trouble Code C1134 indicates a fault within the electrical circuit of the Gear Shift Position Sensor, specifically detecting a “short to ground.” The Engine Control Module (ECM) or Powertrain Control Module (PCM), often in conjunction with the Transmission Control Module (TCM), monitors the voltage signal emanating from the Gear […]

What Does Code C1135 Mean? The diagnostic trouble code C1135 indicates a detected electrical malfunction within the circuit of the Gear Shift Position (GSP) sensor, specifically a “short to battery” condition. This fault is monitored by the Powertrain Control Module (PCM), or in some applications, the Transmission Control Module (TCM). The GSP sensor, often integrated […]

What Does Code C1136 Mean? The diagnostic trouble code C1136 specifically indicates an electrical fault within the circuit responsible for monitoring the gear select position, reporting a “short to ground.” In modern automotive systems, the Transmission Range (TR) sensor, also known as the neutral safety switch or PRNDL switch, is a multi-position switch that informs […]

What Does Code C1137 Mean? Diagnostic Trouble Code C1137 typically indicates an internal malfunction or a critical operational fault within the Anti-lock Braking System (ABS) control module, which often incorporates the Vehicle Stability Control (VSC) and Traction Control (TRAC) functions. While the brief description “ECU is Defective” is general, in the context of C1137, it […]

What Does Code C1138 Mean? DTC C1138 signifies an electrical fault within the transmission range sensor (TRS) circuit, often referred to as the gear position sensor or Park/Neutral Position (PNP) switch. Specifically, “Short to Battery” indicates that a signal wire or circuit associated with the TRS, which the Powertrain Control Module (PCM) or Transmission Control […]

What Does Code C1139 Mean? The diagnostic trouble code C1139 indicates a detected anomaly within the Anti-lock Braking System (ABS) concerning a wheel speed sensor tone ring. Specifically, this “Missing Tooth Fault” signifies that the ABS control module (often integrated with the Powertrain Control Module – PCM or Engine Control Module – ECM, or existing […]