C0036
Left Front Wheel Speed Sensor Circuit Intermittent
Intermittent open or short detected on the left front wheel speed sensor circuit. Often caused by chafed wiring or a loose connector.
- Check engine light: Not always
- Emissions related: No
- Repair difficulty: medium
Symptoms
- ABS warning light on
- ESC/stability control deactivated
- Possible reduced brake assist
- Speedometer may behave erratically
Common causes
Ordered by how often each turns out to be the cause.
- Connector partially unseatedCommon
- Wire chafe on bracketPossible
- Connector with intermittent contact under vibrationLess likely
Parts involved
- Wheel Speed Sensor Fl
- Sensor Wiring
- Sensor Connector
C0036 is a generic OBD-II code defined by SAE J2012. Exact wording and diagnostic procedure vary by manufacturer and model. Code definitions are drawn from the public-domain OBDex dataset; the workshop notes are our own.