Engine codes!! O2 problems, help!!

**NightOps** · 05-02-2011 09:10 PM

I recently put on a full 3" exhaust, down pipe and one piece up pipe/UEL header. Two days after the install my 03 2.0 wrx died in the middle of an intersection. It will run but anything past 1/4 throttle/2k RPM seems to bog the motor. Now it wont run long enough to get it out of the driveway. With my accesport I pull all of these codes,
p0500 vehicle speed sensor
p1518 starter switch circuit low input
p1591 neutral position switch circuit low input
p0136 O2 sensor circuit malfunction
p0132 O2 sensor circuit high voltage
p0131 O2 sensor circuit low voltage
I just purchased a new downstream O2 sensor. It will be in within the next few days. I also priced the upstream O2 sensor, $240, money that I dont want to have to spend. Will my problem be solved with the downstream? Can I clear all of the non O2 codes without any problems? And with the new uppipe can I delete my EGT? Will this cause any problems and will there be anything else that Ill need to do after deleting? Thanks for reading!
Bobby

**SD_GR** · 05-02-2011 09:34 PM

Sorry what map are you running on the AP?

**NightOps** · 05-03-2011 05:23 AM

Actually just the economy map. My wife has been driving because im out of town working.

**NightOps** · 05-03-2011 05:40 AM

Originally Posted by SD_GR

Sorry what map are you running on the AP?

Please note that I didnt put on the AP on the car untill after the problems occured.

**teflon_jones** · 05-03-2011 06:00 AM

Do you have any other mods than the DP/UP/headers?

Did you reset the codes after you put on the AP map and then drive it a while to let the ECU adjust?

**NightOps** · 05-03-2011 06:31 AM

Just a cold air. And I haven't tried to reset and drive the car.

**Donkey** · 05-03-2011 06:47 AM

Originally Posted by NightOps

I recently put on a full 3" exhaust, down pipe and one piece up pipe/UEL header. Two days after the install my 03 2.0 wrx died in the middle of an intersection. It will run but anything past 1/4 throttle/2k RPM seems to bog the motor. Now it wont run long enough to get it out of the driveway. With my accesport I pull all of these codes,
p0500 vehicle speed sensor
p1518 starter switch circuit low input
p1591 neutral position switch circuit low input
p0136 O2 sensor circuit malfunction
p0132 O2 sensor circuit high voltage
p0131 O2 sensor circuit low voltage
I just purchased a new downstream O2 sensor. It will be in within the next few days. I also priced the upstream O2 sensor, $240, money that I dont want to have to spend. Will my problem be solved with the downstream? Can I clear all of the non O2 codes without any problems? And with the new uppipe can I delete my EGT? Will this cause any problems and will there be anything else that Ill need to do after deleting? Thanks for reading!
Bobby

You have the green diagnostic plugs under the dash plugged in. Unplug them.......

**NightOps** · 05-03-2011 07:11 AM

Originally Posted by Donkey

You have the green diagnostic plugs under the dash plugged in. Unplug them.......

just unplug them huh? Do you have a picture of them?

**NightOps** · 05-03-2011 07:16 AM

Nevermind the picture...

**NightOps** · 05-03-2011 07:28 AM

The green plugs are not plugged together. Those stay plugged in while installing the map and/or changing the desired map. But have to be unplugged before driving the car. Any other ideas?

**NightOps** · 05-03-2011 07:51 AM

Ok. I reset the codes,reran the ECU codes and the code P0545 was detected. That code isn't listed on the codes site...has anyone ran across this code before and know what it means??

**jd92677** · 05-03-2011 08:30 AM

Originally Posted by NightOps

Ok. I reset the codes,reran the ECU codes and the code P0545 was detected. That code isn't listed on the codes site...has anyone ran across this code before and know what it means??

It's an EGT sensor code, probably because it is removed with the new up pipe

**NightOps** · 05-03-2011 08:39 AM

I (the wife) drove the car around the block a few times. Going 10-15mph everything was fine. If I tried to accelerate very fast at all, it stalled. What's the best possible solution from here?

**jd92677** · 05-03-2011 08:42 AM

Originally Posted by NightOps

I (the wife) drove the car around the block a few times. Going 10-15mph everything was fine. If I tried to accelerate very fast at all, it stalled. What's the best possible solution from here?

Just a shot in the dark but is the MAF plugged in? and the intake tightened with no leaks?