Archives: DTC Codes

What Does Code C1932 Mean? DTC C1932 indicates a specific electrical fault within the control circuit of the front air suspension compressor relay. This code is typically set by the Air Suspension Control Module (ASCM), or potentially the Body Control Module (BCM) depending on vehicle architecture, when it detects an unexpected short-to-ground condition on the […]

What Does Code C1933 Mean? The diagnostic trouble code C1933 indicates that the relevant control module (which could be the Powertrain Control Module (PCM), Engine Control Module (ECM), Anti-lock Brake System (ABS) module, Transmission Control Module (TCM), or Body Control Module (BCM), depending on the specific vehicle application and the solenoid’s function) has detected an […]

What Does Code C1934 Mean? DTC C1934 signifies a detected failure within the Hydraulic Pump Unit (HPU) to achieve or maintain specified hydraulic pressure within its designated subsystem. This diagnostic trouble code commonly points to an issue with the HPU responsible for the Anti-lock Braking System (ABS), Electronic Stability Control (ESC), Traction Control System (TCS), […]

What Does Code C1935 Mean? DTC C1935 indicates a detected electrical fault within the vehicle’s audible warning or “chime” circuit. This code is typically set by a chassis or body control module, such as the Instrument Cluster Control Module (ICCM), Body Control Module (BCM), or a dedicated Audio Control Module, depending on the vehicle’s architecture. […]

What Does Code C1936 Mean? DTC C1936 indicates a malfunction within the hydraulic pump relay circuit. This code is typically set by the Anti-lock Braking System (ABS) control module, often referred to as the Electronic Brake Control Module (EBCM), or in some integrated systems, the Powertrain Control Module (PCM). The hydraulic pump is a critical […]

What Does Code C1937 Mean? DTC C1937 indicates a malfunction concerning the Steering Wheel Angle Sensor (SWAS) output, specifically an “Offset Failure.” The SWAS is a critical component within modern vehicle chassis control systems, providing real-time data on the steering wheel’s rotational position and rate to various electronic control units (ECUs). Primarily, this data is […]

What Does Code C1938 Mean? DTC C1938, “Invalid Steering Wheel Angle Sensor ID,” signifies a communication or data integrity fault within the vehicle’s chassis control network. This code is typically set when a primary control module, most often the Electronic Stability Control (ESC) module or a dedicated steering column module, fails to correctly identify the […]

What Does Code C1939 Mean? The diagnostic trouble code C1939 signifies a detected malfunction within the input circuit of the brake pressure switch. This code is typically set by the Anti-lock Braking System (ABS) module, Traction Control System (TCS), or Electronic Stability Control (ESC) module, which are often integrated and collectively responsible for monitoring critical […]

What Does Code C1940 Mean? Diagnostic Trouble Code C1940 indicates a detected mechanical failure within the brake pressure switch circuit. This code is typically set by the Anti-lock Braking System (ABS) module, Electronic Stability Program (ESP) module, or a related chassis control unit, which then communicates the fault to the Powertrain Control Module (PCM) via […]

What Does Code C1942 Mean? The diagnostic trouble code C1942 signifies an Unrecognized Powertrain Configuration within the vehicle’s network. This code is typically set when a primary control module, such as the Engine Control Module (ECM) or Powertrain Control Module (PCM), detects an inconsistency or mismatch in the configuration data reported by or expected from […]