P0502

P0502 means: Vehicle Speed Sensor A Circuit Low. The VSS signal is at minimum or zero when vehicle speed is expected.

Vehicle Speed Sensor A Circuit Low

The VSS signal is at minimum or zero when vehicle speed is expected.

SeverityModerate

CategorySensors

Est. Repair Cost$100–$250

Code TypePowertrain

DIY RepairYes

💡 Pro Tip: A zero speed signal with the vehicle moving will put the transmission in limp mode on many vehicles.

Full Repair Estimate

$100–$250

DIY Possible?

YES

Severity

Moderate

What does OBD2 code P0502 mean?+

P0502 stands for Vehicle Speed Sensor A Circuit Low. The VSS signal is at minimum or zero when vehicle speed is expected.

What causes code P0502?+

Failed VSS; Short to ground in wiring; Reluctor wheel damage; Disconnected sensor

How do I fix code P0502?+

Check VSS connector; Inspect wiring for ground short; Check reluctor wheel; Replace VSS

How much does it cost to fix P0502?+

Estimated repair cost for P0502 is $100–$250.

Is P0502 DIY-friendly?+

Yes — P0502 is generally DIY-friendly with basic tools.