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.