Archives: DTC Codes

What Does Code C1820 Mean? DTC C1820 signifies an issue within the vehicle’s air suspension system, specifically indicating that the request to inflate the front right (RF) air spring or strut has exceeded its maximum allotted timing. The Suspension Control Module (SCM) or Air Suspension Control Module (ASCM) constantly monitors the operational parameters of the […]

What Does Code C1830 Mean? DTC C1830 signifies an electrical fault within the control circuit of the air suspension compressor relay. The Air Suspension Control Module (ASCM), or in some integrated systems, the Powertrain Control Module (PCM), is responsible for monitoring the operational integrity of this circuit. When the module attempts to command the air […]

What Does Code C1831 Mean? DTC C1831 signifies an Air Suspension Compressor Relay Circuit Open condition. This code indicates that the vehicle’s air suspension control module (ASCM), body control module (BCM), or power distribution module (PDM), which is responsible for commanding the air suspension compressor, has detected an open circuit in the electrical path to […]

What Does Code C1832 Mean? Diagnostic Trouble Code C1832 signifies a specific electrical fault within the control circuit of the air suspension compressor relay. This code is typically set by the Body Control Module (BCM) or a dedicated Suspension Control Module (SCM), depending on the vehicle manufacturer and architecture. The control module monitors the voltage […]

What Does Code C1833 Mean? Diagnostic Trouble Code C1833 indicates that the vehicle’s Air Suspension Control Module (ASCM), also sometimes integrated into the Body Control Module (BCM) or a dedicated Suspension Control Module (SCM), has detected a short circuit to ground within the air suspension compressor relay control or power circuit. This error signifies an […]

What Does Code C1834 Mean? DTC C1834 indicates a Gauge Drive Current Fault within the vehicle’s instrument cluster or a related control module responsible for operating a specific gauge. This code signifies that the powertrain control module (PCM), or more commonly, the instrument cluster control module (ICM) or body control module (BCM), has detected an […]

What Does Code C1835 Mean? DTC C1835 indicates a detected fault within a specific current sense circuit. As a ‘C’ (Chassis) code, it typically points to an issue with a subsystem beyond the primary powertrain, often involving active chassis components such as the Anti-lock Braking System (ABS), Traction Control System (TCS), Electronic Stability Control (ESC), […]

What Does Code C1836 Mean? Diagnostic Trouble Code C1836 indicates that the vehicle’s control module, typically the Powertrain Control Module (PCM), Engine Control Module (ECM), or Body Control Module (BCM), has detected a signal from the Battery Temperature Sensor (BTS) that is outside its programmed operational range. This “out of range” condition signifies that the […]

What Does Code C1837 Mean? DTC C1837 indicates a detected malfunction within the Battery Heater Circuit. This code is typically set by the Powertrain Control Module (PCM), Hybrid Control Module (HCM), or Battery Energy Control Module (BECM) in vehicles equipped with a battery thermal management system, most commonly found in Hybrid Electric Vehicles (HEV), Plug-in […]

What Does Code C1838 Mean? DTC C1838 is a manufacturer-specific diagnostic trouble code indicating a general fault within the vehicle’s charging system. While the “C” prefix typically denotes a Chassis-related fault, the charging system is fundamental to overall vehicle operation and can sometimes be categorized under various module domains depending on the manufacturer (e.g., Powertrain, […]