why can't I get rid of this SES light?

mattlee04gt

Member

Mar 9, 2010

31

0

6

Mar 11, 2011

#1

• Mar 11, 2011

• #1

ok so hears the deal....not to long after installing a catted X pype on my car the SES light came on. well i got it scanned and it said rear o2 sensor so i replaced both of them got the light cleared only to have it come back on 100 miles later, got it scanned and said the same thing. so i put some MIL Eliminators on it just to see if it would help, got it cleared, 200 miles later it comes back on. what other possibilities could it be?

 

trinity_gt

10 Year Member

Jan 31, 2003

3,125

81

99

Canada

Mar 11, 2011

#2

• Mar 11, 2011

• #2

What were the actual 'P' codes you scanned?

 

mattlee04gt

Member

Mar 9, 2010

31

0

6

Mar 11, 2011

#3

• Mar 11, 2011

• #3

don't remember exactly. i'm taking it to get scanned again monday so i'll know then.

 

B

bdcardinal

tree hugger

Jun 10, 2003

3,612

16

69

santa barbara, CA

Mar 11, 2011

#4

• Mar 11, 2011

• #4

Which catted X pipe? A lot of the ones on the market are not efficient at all and will turn on a light, hence all of them being illegal in CA.

 

mattlee04gt

Member

Mar 9, 2010

31

0

6

Mar 12, 2011

#5

• Mar 12, 2011

• #5

its a BBK.

 

2

2002BLGT

Well-Known Member

Dec 18, 2003

2,945

4

59

Bedford VA

Mar 12, 2011

#6

• Mar 12, 2011

• #6

Post the P codes , unless your MIL eliminators are faulty they should keep the codes off

 

mattlee04gt

Member

Mar 9, 2010

31

0

6

Mar 18, 2011

#7

• Mar 18, 2011

• #7

sorry i've just now had the time to get it scanned. pulled the same code p0430.

 

nyuk98gt

15 Year Member

Oct 10, 2000

1,427

6

79

Chesterfield, MO

Mar 18, 2011

#8

• Mar 18, 2011

• #8

mattlee04gt:

P0430 means the downstream O2 sensor reading to the PCM indicates that the cat converter efficiency is too low (gas is not hot enough). MIL eliminators should fix things right up. Are the MIL eliminators good quality? If they are good quality pieces then you may have no other choice but to get a tune (just a generic performance tune) that turns off the rear O2 sensors to prevent the code from being generated. With the tune, the MIL eliminators will not be required.

HTH,

Chris

 

mattlee04gt

Member

Mar 9, 2010

31

0

6

Mar 18, 2011

#9

• Mar 18, 2011

• #9

i got them from AM so i'm sure they're of good quality. guess i'll just have to look into a tune. thanks for your help.

 

Joe98GT

New Member

Jan 7, 2010

26

0

2

CT

Mar 22, 2011

#10

• Mar 22, 2011

• #10

I have a BBK catted x pipe too and am throwing a P0420 code...I just did the DIY MIL elim and a day later the light is back on. In doing a search I came across another DIY write up and they put the resistor on the black wire! Does anyone know for sure which sensor goes on what side? Blue plug driver side, purple pass is how I have it. And gray wire resitor or black? Currently I have the resistor on the gray and capacitor over to black.

PaladinMicro

 

D

Dustys'99

New Member

Aug 23, 2009

63

0

0

Saskatchewan, Canada

Mar 22, 2011

#11

• Mar 22, 2011

• #11

I have had the exact same code come up after I installed my BBK offroad mid pipe. I bought a tuner and installed the tunes but the light came back on. I was told that there is a patch for this so I went back to the company that wrote the tune and they sent a patch but when I uploaded the new tune to the car the same code came back. This spring I am going to update my SCT with the patched tunes and try again. I'm hoping that I didn't install the tunes right from my computer to my tuner and that is all my problem is. I'll be keeping my fingers crossed....