P0500
Powertrain Codes
P0500 - HONDA - Vehicle Speed Sensor Malfunction
Symptoms
- Engine Light ON (or Service Engine Soon Warning Light) - Speedometer may not work properly - Transmission shifting problem
Possible Causes
- Vehicle speed sensor harness or connectors is open or shorted - Vehicle speed sensor - Combination meter - Faulty ECM.
When Detected
The almost 0 km/h (0 MPH) signal from vehicle speed sensor is sent to ECM even when vehicle is being driven.
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 ECM. The ECM determines the vehicle speed based on the frequency of these pulse signals.