Good day to everyone, got a break from my work and was able to build the code reader and late this afternoon, I tried to retrieve the codes which are as follows:

DM CODES
# 10 Voltage at Mass air sensor too high/low
# 12 Heated oxygen sensor heater circuit open or circuit short
# 17 Data exchange malfunction between individual control module

PIN 6
# 3
# 8

PIN 8
# 13 O2S (lambda) control system operating at rich or lean limit
# 42 CAN communication from ASR, EA/CC/ISC module or diagnostic module (OBDII)faulty

PIN 14
# 5 Stop lamp switch (S9/1)
# 7 CAN data bus signal from EA/CC/ISC, ABS/ASR, HFM-SFI (right or left) control module faulty

I dont have the code list for PIN 6 yet, I am trying to find them as I type this now, I dont even know why I checked it, I was just trying to get as much info across the thread for better perspective, if anyone has them please kindly fill up the blanks for me, thanks.

Also, I am not sure if I was able to erase the codes, when I bring them up and erase them, they would still reappear after I lift the button for the 10seconds erase on the last code of every pin. I dont know what I am doing wrong but Im following the instruction as I understand them, any tip would be much appreciated.

Lastly, after I got the codes, I disengaged the FP gauge from the rail and drained the hose to remove any residual, reconnected the gauge and turned the keys on, I got 60psi then it drops after 3seconds to 53psi. (I tried to start the car, still turns but no run)

Let me add for more perspective, that when I got the car, the exhaust system was converted into a non-catalyst/no O2 Sensor system. What I had ask for the mechanic then was, to weld a nut into the pipe where the catalyst should have been so that we could install an O2 sensor. This would be no more than 20k miles ago, maybe the O2sensor has gone "kaput" I dont know and is showing the rich/lean mixture. I also could wager that the absence of a catalyst is the reason for this, it could have fried the sensor altogether. Could a California version run without a catalyst and not throw any codes or problems?

I am at the moment feeling very uneasy over the recurrent code from each pin of the faulty communication between modules, it sounds like big $$$ !!! I hope the ECU is not fried or something really major.

Well I hope to continue my DIY tomorrow should the gods of peachparts send their graces to me tonight

ps
If anyone can me tell how to check the CPS, please feel free, that's one assignment I havent done yet, I will of course search the forum for this, but just maybe someone doesnt mind giving me a little push on that subject, just maybe

edit:
the more I read about the CPS, the more I am leaning towards it, remember that before this episode it was preceded by the stall at highway speed and previously have been having stalls but quick starts? I hope to find the method in diagnosing a bad CPS so I could report back as per Mr. Dalton's instructions. Fingers crossed.