DTC P2101-00: Throttle Valve Actuator Control Motor Circuit Range/Performance Problem: 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 P2101:00 (PCM, SKYACTIV-G) DETECTION CONDITION AND POSSIBLE CAUSE

System malfunction location	Throttle valve actuator control motor circuit range/performance problem
Detection condition	The PCM turns the main relay on, but if the input voltage is 6.0 V or less, then the PCM determines that the main relay control circuit voltage is low. There is a system error in the electrical throttle control system of the PCM.
Fail-safe	Restricts the upper limit of the engine speed. Fixes the throttle valve opening angle.
Possible cause	Short to ground or open circuit in main relay power supply circuit Short to ground in PCM power supply circuit Short to ground in main relay control circuit PCM connector or terminals malfunction Open circuit in PCM power supply circuit Open circuit in main relay control circuit Throttle valve actuator malfunction PCM malfunction
Courtesy of MAZDA MOTORS CORP.