GXP, Lots of codes, Please help

**gagt3100** · 04-19-2014

p0036, p0030, p0135, p0443. These are the codes I got. When i clear them they come back almost immediately. The CEL won't go on, it will if I do 2+ starts without clearing the codes. My car started to cut power, but it went away, still got the codes though. Engine is running fine, no misfires/knock.

My car: 2005 grand prix gxp 150* nitrous, Catless DP, TEP trans, Custom tuning through DiablewTune.

I installed different maps, still the same codes. I did some research on the codes but could not find anything productive

**91parkave** · 04-19-2014

Maps have nothing to do with it. Lew needs to turn off your rear 02 and you need to check your main 02 sensor verify the harness is plugged in tight same with the evap sensor

**gagt3100** · 04-19-2014

Rear 02 should be off , I have ran a catless DP for more than a year, ill 2x check. Also my trans is leaking a little oil and its getting under the car

**gagt3100** · 04-20-2014

Got another code P0722, speed sensor. Is that the one located on the outside of the trans by the diff? My spedo jumps around and it stays at 0 until I hit 40 then its pretty consistant but still flucutates about 10 mph

**Fivefingerdeathpunch** · 04-20-2014

VSS is on the trans, near the diff.

**gagt3100** · 04-30-2014

Been doing a ton of research and still cant come up with a conclusive answer with this one, anyone else have ideas?

**91parkave** · 04-30-2014

Now that I think about it you got your trans rebuilt and had a gear change right? If that change wasn't accounted for in the tune that could be your issue

**gagt3100** · 05-09-2014

Ok so I found out that my 02 sensor wires were pinched , and one was broken. Put a new one in and same thing, I got codes p0443 p0030 p0036 p0443. Runs real rough and very little power. I did have the tune updated for the new gearing and all that prior to this problem. Could it have shorted out something? https://scontent-b-ord.xx.fbcdn.net/...52&oe=536EEE89

**gagt3100** · 05-10-2014

Fuse was blown again, put a new one in and no more codes but one. P0300 Random missfire car runs like crap sputters and does not sound right. I think it is dumping too much fuel into the car. My Fuel pressure is a few pounds lower, MPG down 3 to 10MPG, and AFR is 13.4~ when it is usually 14.7. Any thoughts?