Code Definition

C1930 — Air Suspension Front Compressor Relay Circuit Open

System: Chassis  |  Type: Manufacturer-Specific  |  Make: Generic

About C1930

C1930 is a manufacturer-specific chassis diagnostic trouble code. It belongs to the C-prefix family of codes, which covers chassis, braking, steering, suspension, or stability-control faults.

When C1930 is stored, the module has detected an open (broken or disconnected) electrical path in the monitored circuit.

Scanning & clearing: Chassis (C) codes are stored in the ABS, traction control, or stability-control modules. An enhanced or OEM-level scan tool is usually required to read and clear them.

C1930 is a manufacturer-specific code. The same code string on a different make may have a different meaning. Always confirm the code's definition against the vehicle's service information for the specific make and model under test.

Code Information

The air suspension system uses an electric compressor to supply air to the air springs or struts, maintaining vehicle ride height. The compressor motor is energized through a relay commanded by the air suspension control module. DTC C1930 is set when the control module detects an open circuit in the front compressor relay control circuit, meaning the relay coil control path is broken and the relay cannot be energized. The relay switches battery voltage to the compressor motor when ride height correction is required. When this code is set, the compressor will not run, resulting in low or saggin...

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