Archives: DTC Codes

What Does Code C1765 Mean? DTC C1765 indicates an Air Suspension Rear Height Sensor Low Signal Circuit Failure. This code is generated by the Air Suspension Control Module (ASCM) or a related chassis control module, not typically the Engine Control Module (ECM) or Powertrain Control Module (PCM). The rear height sensor, usually a potentiometric or […]

What Does Code C1766 Mean? The diagnostic trouble code C1766 indicates an “Air Suspension Rear Height Sensor Low Signal Circuit Open” condition. This code is generated when the Air Suspension Control Module (ASCM) or Body Control Module (BCM), depending on the vehicle architecture, detects an abnormally low voltage signal or an open circuit condition on […]

What Does Code C1767 Mean? DTC C1767 indicates that the vehicle’s Suspension Control Module (SCM), or in some integrated systems, the Powertrain Control Module (PCM) or Body Control Module (BCM), has detected an anomalous electrical condition within the rear air suspension height sensor’s signal circuit. Specifically, this code signifies a “Short To Battery” condition on […]

What Does Code C1768 Mean? DTC C1768 signifies an “Air Suspension Rear Height Sensor Low Signal Circuit Short To Ground.” This diagnostic trouble code is set by the vehicle’s Air Suspension Control Module (ASCM) or Body Control Module (BCM), which is responsible for managing the adaptive or self-leveling air suspension system. While an Engine Control […]

What Does Code C1770 Mean? DTC C1770 signifies an “Air Suspension Vent Solenoid Output Circuit Failure.” This code is typically set by the vehicle’s Air Suspension Control Module (ASCM) or a dedicated suspension control unit when it detects an electrical anomaly within the circuit controlling the air suspension vent solenoid. The vent solenoid is a […]

What Does Code C1771 Mean? Diagnostic Trouble Code C1771 signifies an “Air Suspension Vent Solenoid Output Circuit Open.” This code is typically set by the Air Suspension Control Module (ASCM) or a similar dedicated suspension control unit, rather than the Engine Control Module (ECM) or Powertrain Control Module (PCM), as it pertains to a chassis […]

What Does Code C1772 Mean? DTC C1772 signifies an electrical fault within the air suspension system, specifically indicating a short to battery voltage condition on the output circuit controlling the air suspension vent solenoid. The Air Suspension Control Module (ASCM), or in some integrated systems, the Powertrain Control Module (PCM), is responsible for monitoring this […]

What Does Code C1773 Mean? DTC C1773 signifies an electrical fault within the output circuit for the Air Suspension Vent Solenoid, specifically detecting a condition where the circuit is shorted to ground. In an air suspension system, the vent solenoid is a critical electro-mechanical component responsible for releasing pressurized air from the air springs (or […]

What Does Code C1774 Mean? DTC C1774, generally defined as “Coolant Temp Out of Range,” is a manufacturer-specific chassis or body code. Unlike ‘P’ codes which directly relate to the powertrain, ‘C’ codes typically pertain to the chassis, body, or network communication systems. When the Powertrain Control Module (PCM), Body Control Module (BCM), Hybrid Control […]

What Does Code C1775 Mean? Diagnostic Trouble Code (DTC) C1775 signifies a detected malfunction within the vehicle’s DC-DC converter system. In hybrid electric vehicles (HEVs) and battery electric vehicles (BEVs), the DC-DC converter is a critical component responsible for stepping down the high voltage (HV) from the traction battery pack to a nominal 12-volt supply […]