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OBDII Codes Engine Light Repair and Diagnostic Information | AutoCodes.com

P0500

P0500 - Vehicle Speed Sensor 'A'

Possible causes
- Faulty Vehicle Speed Sensor
- Vehicle speed sensor harness or connectors is open or shorted
- Vehicle speed sensor circuit poor electrical connection
- Faulty Engine Control Module (ECM)
When is the code detected?
The almost 0 km/h (0 MPH) signal from vehicle speed sensor is sent to Engine Control Module (ECM) even when vehicle is being driven.
Symptoms
- Engine Light ON (or Service Engine Soon Warning Light)
- Speedometer may not work properly
- Transmission shifting problem
P0500 Description

The vehicle speed sensor outputs a 4 pulse signal for every revolution of the rotor shaft, which is rotated by the transmission output shaft via the driven gear. After this signal is converted into a more precise rectangular waveform by the waveform shaping circuit inside the combination meter, it is then transmitted to the Engine Control Module (ECM). The ECM determines the vehicle speed based on the frequency of these pulse signals.

OBDII Code P0500 - Vehicle Speed Sensor 'A' - AutoCodes.com
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