P0501 Code: Vehicle Speed Sensor A Circuit Range/Performance
🟠 Moderate severity · drivable
Drivable, but the speedometer may read wrong and the transmission may shift oddly; fix it soon.
What P0501 means
The vehicle speed sensor (VSS) is sending a signal, but the reading is outside the range the computer expects. The VSS measures how fast the wheels or driveshaft turn and reports road speed. A range or performance fault usually means a weak sensor, a damaged sensor ring, or a wiring issue.
Symptoms
- Check engine light is on
- Speedometer reading wrong or bouncing
- Cruise control not working
- Harsh or delayed transmission shifts
Common causes
- most common: Faulty or worn vehicle speed sensor
- common: Damaged or corroded sensor wiring
- common: Damaged or dirty sensor ring or reluctor wheel
- less common: Sensor gap or mounting issues
How to fix it
| Fix | DIY? | Typical cost |
|---|---|---|
| Clean the sensor tip and check its mounting | Yes | $20–80 |
| Replace the vehicle speed sensor | Yes | $30–150 |
| Repair sensor wiring or replace the sensor ring | Mechanic | $100–300 |
Frequently asked questions
Can I drive with a P0501 code?
Yes, but the speedometer may be wrong and the transmission may shift poorly. Have it fixed soon for safe driving.
What is the difference between P0500 and P0501?
P0500 means the computer gets no speed signal at all. P0501 means it gets a signal, but the reading is out of range.
How much does it cost to fix a P0501?
A new speed sensor costs about $30–$150. Wiring or sensor ring repairs can add $100–$300.
Related codes
P0500
P0500 Code: Vehicle Speed Sensor (VSS) Malfunction
P0502P0502 Code: Vehicle Speed Sensor A Circuit Low Input
P0503P0503 Code: Vehicle Speed Sensor A Circuit Intermittent/Erratic/High
Updated 2026-08. This page is informational and not a substitute for professional diagnosis.