DTC P0501 Vehicle Speed Sensor A Range/Performance: General Description

The wheel speed sensor is the essential component that the PCM uses to calculate vehicle speed. This wheel speed sensor is the active hall-sensor type and good at temperature and noise characteristic. Digital wave is produced as tone wheel rotate by hall sensor principle. Frequency of duty wave is changed in proportion to rotation of tone wheel and PCM gets vehicle speed through ABS control unit or ESP control unit by using these signals.