tightdogal

For the obII thingy readout:

P1409
P1451
P0443
P0141
P0155
P0161
P1131
P0135

Thanks to anyone who can identify the problems and figure out what to do. I know I might have all o2 sensors dead.

petrock

Code descriptions gleamed from another forum:

P1409 - EGR Vacuum Regulator circuit malfunction.
P1451 - Lack of Response From Passive Anti-Theft System Module - Engine Disabled.
P0443 - EVAP Canister Purge Control Solenoid or Valve Faulty.
P0141 - Downstream Heated Oxygen Sensor Heater circuit fault - Bank No. 1.
P0155 - Upstream Heated Oxygen Sensor Heater circuit fault - Bank No. 2.
P0161 - Downstream Heated Oxygen Sensor Heater circuit fault - Bank No. 2.
P1131 - Lack of Upstream Heated Oxygen Sensor Switch - Sensor Indicates Lean - Bank No. 1.
P0135 - Upstream Heated Oxygen Sensor Heater circuit fault - Bank No. 1.

Since both sides of the motor are effected, I would suspect that the problem isn't actually the O2 sensors. Its very unlikely that all of them died at the same time. I would start by checking out the mass air flow sensor. If its going bad, then all the 02 sensors will be confused which could cause them to throw the codes your seeing. Take out the MAS. If it looks real dirty, clean it with some electrical connector cleaner or MAS cleaner (both available at your local autoparts store). The MAS is very delicate, so be careful. Don't use just any cleaner on it or you'll ruin it.

If that doesn't fix it, you probably have a pretty big vacuum leak somewhere. Here is a pretty good video on how to fine a vacuum leak:

http://www.youtube.com/user/EricTheC.../5/9CPqbaSgcok

btw, when testing for vacuum leaks, wiggle hoses around as you spray them etc. Sometimes when the motor is running the hose will suck in and loosely seal itself, making it an intermittent leak. Not very common, but it does happen.

Good luck...

tightdogal

Thanks so much man!!! I surely appreciate it!!

tightdogal

okay, so I took it to my mechanic. Turns out all 4 o2 sensors were all fried and dead. The previous owner of the car put bypasses up on the o2 sensors so the computer would be fooled to think they were running fine, when they were probably dead from the beginning. :-/ mad at myself for buying a car like that.

Anyways, one of the o2 sensors burned so badly that they actually effed up the computer. The codes will not reset, they seemed to be burned into the computer, and it keeps giving off the same codes. So it looks like I need a new computer and a flash...

So, does anyone know where I could purchase a computer for an 03 GT? I tried looking online but it's not what I need...I need a car computer and a flash...is that the same thign as a tune? Sorry I seem like I'm being an idiot here...

petrock

You might get lucky at a local junkyard/pick-n-pull. Don't know if the computer is different from a GT to a base model. You can call your local dealer to see if the part numbers for the base and GT models and see if the part numbers are the same. If they are, then your search will probably be easier.

I wouldn't trust an aftermarket 'puter. But thats just me… Its your ride.

Good luck...