Mitsubishi Montero P0121: TPS → Switch “A” Circuit Range → Performance Problem
P0121 is a relatively common trouble code with the Mitsubishi Montero. It’s an OBDII code and has to do with the Throttle Pedal Position Sensor. It is relatively serious problem since it can leave your vehicle in failsafe mode. OBDII code P0121 is a serious problem that requires serious attention. Diagnosing it can … Read more