2013 Hyundai Genesis Coupe, 3.8GDi

I recently installed an intake manifold spacer in my car, as well as 2 new gaskets on both sides of the spacer. The spacer restricts a small amount of heat from the lower part of the engine to transfer to the intake manifold. After installation I had my CEL come on. Auto zone and O’Reilly ran codes and they were P01123- throttle position sensor/switch A circuit high input, P0222-throttle position sensoror pedal position sensor/switch B circut low input.

I sought help from some forums members at a certain website, and they suggested I get an OBD2 reader and an app on my phone to read if I was getting WOT from the TPS/Electronic throttle control. I did and I do get a full WOT when flooring it, which should mean the TPS/ETC is fine. I then used the reader and the app to pull codes from my ECU, and I got P0113-intake air temp circuit high input, P0106-manifold absolute pressure/barometric pressure circuit range/performance problem, and finally P2228-barometric pressure circuit low.

I have tried resetting the ECU a number of times. I have ensure all sensors are plugged in. I have ensured there are no loose wires or nicks or cuts in the wires. I’m at a loss as to what to try next. This is sort of a oddball car to get help on because, other than a dealership, there’s just not many specialists out there for them. Thank you for any information you may be able to provide.


1 thought on “2013 Hyundai Genesis Coupe, 3.8GDi”

  1. Have you tried putting it back to stock to see if it takes care of it. If it does, then you are stuck with needing a programmer to change the specific parameters of the sensors if you insist in using the modifications.

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