P0500 — Vehicle speed sensor (VSS)

What this code generally means, its most common causes, and how serious it is.

TYPE: GENERICSYSTEM: IDLE AND SPEED

What does the code P0500 mean?

The vehicle speed sensor (VSS) measures how fast the car is moving and feeds several systems: the engine control module, often the transmission, sometimes cruise control and ABS. This code flags a problem in that signal.

Common possible causes

A failing VSS — the most common cause.
Damaged wiring or connector — exposed to road-side elements under the vehicle.
A damaged or dirty reluctor ring — the toothed part the sensor reads can be dirty or worn.

General severity

Moderate — involves safety systems

Since this signal can be shared with the transmission, cruise control, and ABS on many vehicles, a problem can affect shift quality or disable certain safety features — worth checking fairly soon rather than ignoring.

This is still a general severity for this code, not a diagnostic for your car. Only a real read of your codes, with your mileage and vehicle history, can tell what's really going on.

Get a diagnostic for YOUR car

Connect a Bluetooth OBD2 reader and read your vehicle's real codes with Meca — free, no appointment, with causes ranked for your actual situation.

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Meca doesn't replace an in-person check by a professional. For any serious sign (a flashing light, a major loss of power, a fuel smell), see a mechanic promptly.

Frequently asked questions

My cruise control stopped working — is that related?

That's possible — many vehicles disable cruise control when this signal is unreliable, as a precaution.

My speedometer reads 0 or acts erratic — is that related?

Yes, that's a frequent symptom when the sensor or its wiring is at fault.

Is this related to ABS?

On some vehicles, yes — sharing this signal with ABS is one reason not to take this code lightly.