Code result
P0501
Vehicle Speed Sensor Range/Performance
Moderate severity
What it means
The VSS signal is present but inconsistent — either values jump implausibly or the sensor reports a speed inconsistent with engine RPM in gear. Often a damaged reluctor ring or a sensor with degraded magnetic response.
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
Sensor signal intermittent
highOne of the most commonly reported causes for this code — check this first.
Reluctor tooth damaged
lowLess common, but worth ruling out after the more likely causes.
Sensor element aged beyond calibration window
lowLess common, but worth ruling out after the more likely causes.
Related help
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