Archives: DTC Codes

What Does Code C1722 Mean? The diagnostic trouble code C1722 indicates an electrical fault within the power supply circuit for one or more air suspension height sensors. Specifically, the vehicle’s suspension control module (often referred to as the Air Suspension Control Module, Chassis Control Module, or similar, depending on the manufacturer) has detected an unintended […]

What Does Code C1723 Mean? The diagnostic trouble code C1723 signifies an “Air Suspension Height Sensor Power Circuit Short To Ground.” This code is typically registered by the vehicle’s Suspension Control Module (SCM), Body Control Module (BCM), or an integrated chassis control module, which is responsible for managing the air suspension system. The control module […]

What Does Code C1724 Mean? DTC C1724 signifies an “Air Suspension Height Sensor Power Circuit Failure.” This is a chassis-specific diagnostic trouble code, indicating a malfunction within the vehicle’s air suspension system, specifically concerning the electrical power supply to one or more of its height sensors. The Suspension Control Module (SCM), sometimes integrated into a […]

What Does Code C1725 Mean? Diagnostic Trouble Code (DTC) C1725 signifies a detected Front Pneumatic Failure within the vehicle’s air suspension system. This code is specifically generated by the Air Suspension Control Module (ASCM) or Suspension Control Module (SCM) when it identifies a malfunction related to the air pressure or integrity of the pneumatic components […]

What Does Code C1726 Mean? DTC C1726 signifies a detected “Air Suspension Rear Pneumatic Failure” within the vehicle’s air suspension system. This code is typically set by the Suspension Control Module (SCM), Air Suspension Control Module (ASCM), or a similar integrated Body Control Module (BCM) that manages the active suspension system. The module monitors various […]

What Does Code C1727 Mean? The diagnostic trouble code C1727 signifies a detected Air Suspension Reservoir Pneumatic Failure within the vehicle’s active air suspension system. This code is typically set by the Air Suspension Control Module (ASCM) or a dedicated Ride Height Control Module (RHCM), not the Engine Control Module (ECM/PCM). The ASCM/RHCM constantly monitors […]

What Does Code C1728 Mean? DTC C1728 signifies an operational failure within the transfer case system, specifically indicating that the Transfer Case Control Module (TCCM) or Powertrain Control Module (PCM) has detected an inability to successfully transition the transfer case from two-wheel drive high range (2H) to four-wheel drive high range (4H) after a shift […]

What Does Code C1729 Mean? DTC C1729 signifies a detected malfunction within the Transfer Case’s ability to transition between high-range (4H) and low-range (4L) four-wheel drive modes. This code is typically set by the Transfer Case Control Module (TCCM), or by the Engine Control Module/Powertrain Control Module (ECM/PCM) if it integrates TCCM functionality. The TCCM […]

What Does Code C1730 Mean? The diagnostic trouble code C1730 signifies that a control module, most commonly the Powertrain Control Module (PCM), Anti-lock Brake System (ABS) module, or Body Control Module (BCM), has detected that its internal 5-volt reference voltage supply is operating outside of its calibrated specifications. This 5V reference circuit is crucial for […]

What Does Code C1731 Mean? DTC C1731 signifies an “Air Suspension LF Corner Up Timeout” condition. This diagnostic trouble code is set by the Suspension Control Module (SCM) or Air Suspension Control Module (ASCM) when the left front (LF) corner of the vehicle’s air suspension system fails to achieve its commanded “up” height within a […]