P0501 Vehicle Speed Sensor A Range/Performance

Definition: The P0501 code indicates that the vehicle’s Powertrain Control Module (PCM) has detected a problem with the Vehicle Speed Sensor (VSS) signal. This could mean that the VSS is not providing an accurate speed reading or there is a discrepancy between the actual speed and what the sensor reports.

p0501 – Vehicle Speed Sensor A Range/Performance

Typical severity: Low

Common Causes

p0501 – Vehicle Speed Sensor A Range/Performance

Common causes:

• Faulty vehicle speed sensor
• Defective speedometer
• Wiring issues (such as shorts or opens)
• Poor electrical connection related to the vehicle speed sensor
• Issues with the transmission control module

 

Common Misdiagnosis

OBD2 Code: P0501

Description: Vehicle Speed Sensor A Range/Performance

Common Misdiagnosis: Replacing the vehicle speed sensor without checking for wiring issues or problems with the speedometer.

 

Common Diagnostic Steps

OBD2 Code: P0501

Description: Vehicle Speed Sensor A Range/Performance

• Check for any stored trouble codes and freeze frame data using an OBD2 scanner.
• Inspect the vehicle speed sensor (VSS) wiring and connectors for damage or corrosion.
• Test the VSS with a multimeter to ensure it is receiving power and ground signals.
• Measure the output signal from the VSS while rotating the wheels to check for proper operation.
• Examine the reluctor ring or tone wheel for damage, dirt, or misalignment that could affect sensor readings.
• If applicable, verify that the transmission fluid level is correct and inspect for contamination.
• Consult technical service bulletins (TSBs) related to this code for manufacturer-specific guidance.
• If all tests pass but the code persists, consider replacing the vehicle speed sensor.