Code result
C0056
Left Rear Wheel Speed Sensor Circuit Intermittent
Moderate severity
What it means
Intermittent open or short on the left rear wheel speed sensor circuit. Wheel-speed signals feed ABS, ESC, traction control, transmission and odometer — a single dropped signal disables all of these safety functions until repaired.
Is it safe to drive?
Use caution
The vehicle is usually drivable for short distances, but the problem can worsen or affect emissions. Diagnose and repair as soon as practical.
Most likely causes
Connector unseated
highOne of the most commonly reported causes for this code — check this first.
Wire chafe
mediumA plausible cause — test and verify before replacing parts.
Connector with intermittent contact under vibration
lowLess common, but worth ruling out after the more likely causes.
Related help
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