At first, my car was getting multiple / random misfires, replaces all plugs and coils and it went away. Car is stuck in limp mode and Now I got p2128 / p2123, I’ve replaced throttle node and petal position sensor and still in limp mode. I’ve just unhooked the battery and hopefully I just needed to reset something and made that will do it. I have no idea what to do, please help me.
04 Coupe

 

You neglected to mention the year and model so I just had a look at 2004 sedan

Have you checked the FSM?

https://g35driver.com/forums/newrepl...eply&p=7196214


DTC P2122, P2123 APP SENSORPFP:18002Component DescriptionABS008CDThe accelerator pedal position sensor is installed on the upper endof the accelerator pedal assembly. The sensor detects the accelera-tor position and sends a signal to the ECM.Accelerator pedal position sensor has two sensors. These sensorsare a kind of potentiometers which transform the accelerator pedalposition into output voltage, and emit the voltage signal to the ECM.In addition, these sensors detect the opening and closing speed ofthe accelerator pedal and feed the voltage signals to the ECM. TheECM judges the current opening angle of the accelerator pedal fromthese signals and controls the throttle control motor based on thesesignals.Idle position of the accelerator pedal is determined by the ECMreceiving the signal from the accelerator pedal position sensor. The ECM uses this signal for the engine oper-ation such as fuel cut.CONSULT-II Reference Value in Data Monitor Mode

DTC P2127, P2128 APP SENSORPFP:18002Component DescriptionABS008CLThe accelerator pedal position sensor is installed on the upper endof the accelerator pedal assembly. The sensor detects the accelera-tor position and sends a signal to the ECM.Accelerator pedal position sensor has two sensors. These sensorsare a kind of potentiometers which transform the accelerator pedalposition into output voltage, and emit the voltage signal to the ECM.In addition, these sensors detect the opening and closing speed ofthe accelerator pedal and feed the voltage signals to the ECM. TheECM judges the current opening angle of the accelerator pedal fromthese signals and controls the throttle control motor based on thesesignals.Idle position of the accelerator pedal is determined by the ECMreceiving the signal from the accelerator pedal position sensor. The ECM uses this signal for the engine oper-ation such as fuel cut.CONSULT-II Reference Value in Data Monitor Mode