P0502Nissan LeafYears: 1996 - 2026
Vehicle Speed Sensor Circuit Low Input
Reviewed by ASE Certified Technician
What does this mean?
Code P0502 indicates a problem with the vehicle speed sensor signal.
Disclaimer: This diagnostic code is part of the standard OBD2 system and can apply to Nissan Leaf models manufactured from 1996 to 2026. However, please note that the presence of this specific code depends on your vehicle's exact engine configuration, options, and production year.
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Common Causes
Faulty vehicle speed sensor (VSS)
Damaged, chafed, or broken wiring harness
Corroded or loose electrical connector
Symptoms to Watch For
- Check Engine Light is illuminated
- Erratic speedometer reading
- Hard or harsh gear shifting
- Cruise control not functioning