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.
Affected components
- Vehicle speed sensor
- Reluctor ring
Common causes
- High likelihood: Sensor signal intermittent
- Low likelihood: Reluctor tooth damaged
- Low likelihood: Sensor element aged beyond calibration window
Diagnostic notes
- The malfunction indicator lamp may illuminate
- This code can affect emissions
- A drive cycle may be required after repair
Related codes
Sources
Diagnostic information is provided for reference only. Confirm the code with a compatible scan tool and follow the vehicle manufacturer's service procedures before replacing components.