Code Definition

C1920 — Led #1 Circuit Failure

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

About C1920

C1920 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 C1920 is stored, the module has detected an electrical-circuit fault in the wiring, connector, or driver associated with the named component.

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.

C1920 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

This code relates to an LED indicator output circuit driven by a control module, where LED number 1 is one of several status or warning indicators the module monitors. The module drives the LED and watches the circuit current to confirm the lamp is connected and operating. DTC C1920 is set when the module detects a failure in the LED 1 circuit, typically an open or short that prevents the indicator from drawing the expected current. This is usually caused by a failed LED, an open or shorted wire, or a connector fault. When the code is set the affected indicator may not illuminate correctly, de...

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