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P0101 relates to the MAF sensor not MAP sensor. The MAF is found on the intake pipe, just after the air fliter box.
When was the air filter replaced?
You need to check the wiring to the MAP sensor. Are you 100% sure there is no MAF sensor because that fault code is specifically for the MAF sensor, strange.
Check for power, ground and signal from the MAP sensor wiring and also check live data feedback from the sensor with a diagnostic tool. You have replaced the sensor but if there is a problem with the wiring then a new sensor will not change anything.
If you're doing the work yourself, then I can guide you on how to check the wiring.
Hope this helps.
Put the ignition in the ON position. Get a paperclip and backprobe each wire (1-by-1) and use a multimeter to find the power wire and then ground. Connect the black lead to battery negative and use the red lead to find the power and ground, you should get 5v on the power wire and 0v on ground then the 3rd will be the signal wire.
Once you know which is the signal and ground, backprobe the ground and signal, then connect the black lead to the ground and red to the signal and start the engine. You should be at around 1v and as you accelerate, the voltage should increase to around 5v. The voltage numbers aren't important, what's important is that the voltage increases as you increase the revs.
Please let me know the what you come up with. Thank you
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