What are the common causes of C0500?

An open circuit in the left front wheel speed sensor wiring. A failed left front wheel speed sensor. A blown fuse feeding the ABS circuit. Corrosion at the left front sensor connector. A damaged harness near the left front wheel.

Check the ABS fuse. Inspect the left front sensor and connector. Test the sensor circuit for an open. Measure sensor resistance against spec. Replace the sensor or repair the harness. Clear the code and retest.

C0500

Left Front Wheel Speed Sensor A Circuit/Open

System: Chassis control (C code)
Lamp: ABS Light
Category: Chassis

What it means

C0500 means Left Front Wheel Speed Sensor A Circuit/Open.

Where it lives

For C0500, the circuit described runs through the sensor. The description of C0500 reports the sensor as open.

Check these first

An open circuit in the left front wheel speed sensor wiring
A failed left front wheel speed sensor
A blown fuse feeding the ABS circuit
Corrosion at the left front sensor connector
A damaged harness near the left front wheel

What to do next

Check the ABS fuse
Inspect the left front sensor and connector
Test the sensor circuit for an open
Measure sensor resistance against spec
Replace the sensor or repair the harness
Clear the code and retest

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Updated

Generic SAE J2012 definition. Last updated 2026-10-10.