DTC P0500-00: Vehicle Speed Signal Circuit Malfunction (TCM) (Us): Outline

WARNING: This page is about a different car, the 2020 Mazda CX-30. However, it is still accessible from the selected car via links, so may be relevant.

DTC P0500:00 (TCM, ET6A-EL, ET6AX-EL, US) DETECTION CONDITION AND POSSIBLE CAUSE

System malfunction location	Vehicle speed signal circuit malfunction
Detection condition	Under the following conditions, the vehicle speed signal input from DSC HU/CM is incorrect: Engine is running. The vehicle is driven in D position or R position. Output shaft speed sensor related DTC is not recorded There is correlation between output shaft speed sensor speed and turbine/input shaft speed sensor speed.
Fail-safe	Inhibits learning control. Inhibits neutral idle control. Inhibits AAS.
Possible cause	DSC HU/CM DTC is stored. ABS wheel-speed sensor malfunction
System wiring diagram	Not applicable
Connector diagram	Not applicable