Hey guys just bought a g35 04. All error lights came on then no acceleration, I'll post a screen shot of codes that I pulled, deffinetly the tp sensor causing this?
P0183 - Fuel tank temperature, probably the fuel pump, you can test the resistance of the circuit with a DMM, should be 2.5k ohms at 70F degrees, resistance decreases as temperature increases so 120F degrees would be around 0.85k ohms
P0447 - EVAP solenoid circuit open, usually a failed evap solenoid but inspect the harness for damaged wiring or possibly it's just unplugged.
P2135 - Incorrect relation of TPS and APP data, best thing to do is plug in an obd2 scanner and read the data between APP1 and APP2 (gas pedal switch) to make sure they're sending the correct % or voltage to the ECM. Pedal fully released should be around 0.36v for sensor1, 4.75v for sensor 2. Pedal fully depressed should be the opposite, 4.75v for sensor1, 0.36v for sensor2.
If the pedal switch is working it's probably the throttle actuator and you can check it's data, throttle position will read back as a % throttle, these engines use throttle cut at lower rpm's so it won't open all the way until you floor it.
If you unplug the throttle body you MUST perform the throttle closed position relearn, if you unplug the gas pedal switch you MUST perform the APP switch relearn, if you replace the throttle body you MUST also perform the idle air recalibration.
FSM section EC - Engine Controls under "basic service procedures".
