OBD-II Code P0500 — What It Means & How to Fix It

What Does This Error Mean?

P0500 means the Vehicle Speed Sensor (VSS) is not sending a proper signal to the engine computer. The speed sensor tells your car's computer how fast you are going. This information affects shifting, cruise control, speedometer accuracy, and ABS. You may notice your speedometer not working, erratic shifting, or cruise control not engaging. This code needs attention because it affects multiple systems in your vehicle.

Affected Models

All vehicles 1996+
Common in Toyota Camry and Corolla
Common in Honda Accord and Civic
Common in Nissan Sentra and Altima
Common in older Ford and GM trucks

Common Causes

Faulty vehicle speed sensor on the transmission or wheel hub
Damaged or corroded wiring between the speed sensor and the computer
Speed sensor connector has corrosion or broken pins
Faulty instrument cluster causing incorrect speed signal processing
Damaged tone ring (reluctor wheel) that the sensor reads from

How to Fix It

Check the vehicle speed sensor connector first. Locate the VSS on the transmission (older vehicles) or at the wheel hub (newer vehicles). Unplug it and check for corrosion or damage.

Your repair manual will show you the exact location. On many vehicles, the transmission-mounted sensor is easy to access.
Inspect the wiring from the speed sensor back toward the engine computer. Look for chafed insulation, broken wires, or areas where the harness has been pinched or rubbed through.

Speed sensor wiring often runs under the vehicle where it can be damaged by road debris or heat.
Test the speed sensor with a multimeter. Check its resistance (ohms) and compare to the specification in your repair manual. Out-of-range resistance means the sensor is bad.

Some speed sensors are Hall-effect type and cannot be tested with just resistance. They need a scope or scanner.
If the sensor tests bad, replace it. Most transmission-mounted speed sensors unbolt with one bolt and pull straight out. Wheel-mounted sensors are part of the hub assembly on some vehicles.

Apply a thin layer of dielectric grease on the new sensor connector to prevent future corrosion.
Clear the code and take a test drive. Verify that the speedometer works correctly, the transmission shifts normally, and cruise control engages properly.

If the speedometer still does not work after replacing the sensor, the instrument cluster or wiring may be the problem.

When to Call a Professional

If you are not comfortable working around the transmission or wheel hubs, have a shop handle this. A speed sensor costs $20 to $80 for the part. Labor is $50 to $200 depending on sensor location. If the wiring harness is damaged, repair costs can be $200 to $500. Total repair at a shop is typically $100 to $400.

Frequently Asked Questions

Can I drive with P0500?

You can drive, but be cautious. Your speedometer may not work, making it hard to judge your speed. Automatic transmissions may shift harshly or at the wrong times. Cruise control will likely not work. Get this fixed soon for safety reasons.

Why does P0500 affect my transmission shifting?

The transmission computer uses vehicle speed to decide when to shift gears. Without a speed signal, it cannot shift at the right times. You may notice the transmission staying in one gear or shifting harshly. Some vehicles go into a limp mode that locks the transmission in a single gear.

Is the vehicle speed sensor the same as the wheel speed sensor?

It depends on your vehicle. Older vehicles have a separate speed sensor on the transmission that drives the speedometer. Newer vehicles often use the ABS wheel speed sensors for vehicle speed information. Your repair manual will tell you which type your vehicle has.