Archives: DTC Codes

What Does Code P1914 Mean? DTC P1914 signifies a malfunction within the Manually Shifted Automatic (MSA) Switch Circuit. This code is triggered by the Powertrain Control Module (PCM) or Transmission Control Module (TCM) when it detects an implausible electrical signal from the MSA switch assembly, or an open/short circuit within its associated wiring. The MSA […]

What Does Code P1915 Mean? DTC P1915 signifies a Reverse Switch Circuit Malfunction. This code is set by the Powertrain Control Module (PCM), or sometimes the Transmission Control Module (TCM), when it detects an electrical fault within the circuit dedicated to the reverse light switch. The reverse switch, often located on the transmission or transaxle, […]

What Does Code P1916 Mean? DTC P1916 signifies a detected malfunction within the circuit of the High Clutch Drum Speed Sensor. This is a manufacturer-specific code, commonly observed in vehicles equipped with sophisticated automatic transmissions, such as those found in BMW, Audi, and Ford, which utilize multi-plate clutch designs. The Transmission Control Module (TCM), often […]

What Does Code P1917 Mean? The OBD-II diagnostic trouble code P1917 signifies an intermittent anomaly detected in the signal from the High Clutch Drum Speed Sensor. This sensor, often a Hall-effect or inductive type, is an integral component of the automatic transmission’s control system. Its primary function is to monitor the rotational speed of a […]

What Does Code P1918 Mean? DTC P1918 signifies a “Transmission Range Display Circuit Malfunction.” This code indicates that the Powertrain Control Module (PCM) or Engine Control Module (ECM) has detected an anomaly within the electrical circuit responsible for communicating the selected transmission gear position to the vehicle’s instrument cluster display. The Transmission Range Sensor (TRS), […]

What Does Code C1091 Mean? DTC C1091 signifies a “Speed Wheel Sensor All Coherency Failure” within the vehicle’s Anti-lock Braking System (ABS) and/or Electronic Stability Control (ESC) module. This code indicates that the ABS/ESC control unit is detecting an implausible or inconsistent speed signal from all wheel speed sensors simultaneously, or that the aggregate data […]

What Does Code C1095 Mean? DTC C1095 signifies a detected malfunction within the Anti-lock Braking System (ABS) hydraulic pump motor circuit. This code is set by the Electronic Brake Control Module (EBCM), also commonly referred to as the ABS control module or Hydraulic Control Unit (HCU). The ABS hydraulic pump motor is a critical component […]

What Does Code C1096 Mean? DTC C1096 signifies an “ABS Hydraulic Pump Motor Circuit Open” condition. This diagnostic trouble code is set by the Anti-lock Brake System (ABS) control module, which continuously monitors the electrical integrity and operational status of the ABS hydraulic pump motor. An “open circuit” indicates a complete interruption of electrical flow […]

What Does Code C1097 Mean? Diagnostic Trouble Code C1097, “ABS Hydraulic Pump Motor Circuit Short To Ground,” indicates that the Anti-lock Brake System (ABS) control module has detected an abnormal electrical condition within the circuit responsible for powering the hydraulic pump motor. Specifically, the module has identified a path of unintended low resistance, allowing current […]

What Does Code C1098 Mean? DTC C1098 signifies that the Anti-lock Braking System (ABS) control module has detected an electrical fault indicating a short circuit to battery voltage within the ABS hydraulic pump motor’s power supply circuit. The ABS module continuously monitors the integrity and electrical characteristics of the pump motor circuit. Under normal operation, […]