OBD-II code · Powertrain (generic)
P0501 Vehicle Speed Sensor "A" Range/Performance
The VSS signal is present but inconsistent — either values jump implausibly or the sensor reports a speed inconsistent with engine RPM in gear. Often a damaged reluctor ring or a sensor with degraded magnetic response.
Is it safe to drive with P0501?
Usually safe to drive in the short term. Get it diagnosed when convenient, sooner if the car drives differently.
Common causes
- Most likelySensor signal intermittent
- Less likelyReluctor tooth damaged
- Less likelySensor element aged beyond calibration window
Repair at a glance
- Difficulty
- Medium
- DIY friendly
- Often, with basic tools
- Typical labour
- 0.5–3 h
- Emissions test
- Likely to fail
- After the fix
- A drive cycle is needed before the light stays off
- Parts involved
- Vehicle Speed Sensor, Reluctor Ring
Code data: OBDex open dataset (CC0). Labour times are typical ranges, not a quote.