[Ho_Edge]

my emmissions control light came on the other day and i havent changed anything recently...hell its been prolly 6 months at least since i took the cats out....anyway i'm throwing a code now and this is what SCT said it was

the first 0 is a zero
l
l
\/
P0153 OX S CIR
SLW RESP 2 S1

aassuming this means ...somethin with the 02 sensors?
slow response to driver side?

anybody know what this is for or how to fix?


i thought brenspeed turned them off with my last tune

thnx in advance!

[Black Baby II]

Based on the code manual it is as follows -

P0153- Upstream Heated Oxygen Sensor circuit Slow Response - Bank No. 2.

I had this happen awhile back for no reason as well. I used my tuner (SCT) to clear and has not returned since.

BBII

[06RedfireGT]

I would just clear it. It most likely won't come back on.

[BlackedOut04GT]

When ever I get a code I clear it and wait to see if it comes back. If it comes back the same code then I'll look it over and see whats wrong.

[Ho_Edge]

cool thnx, i'll clear it and see what happens

[06GTMustang89]

Its a problem with some of us who have LT headers since the o2 sensors are moved from there original position (further down)...but everytime mine pops up i clear it with the tuner and it goes off for a long time..

[ttr038]

Mine throws the same code everytime I drive it, Would replacing them help or just be waisting money?

[mustangmallory]

Will eliminators fix this problem?

[06RedfireGT]

Originally Posted by ttr038 Mine throws the same code everytime I drive it, Would replacing them help or just be waisting money?

There is no need for them to be replaced. Do you have headers?

Originally Posted by mustangmallory Will eliminators fix this problem?

No, these are concerning the upstream o2 sensors. Eliminators trick the computer into thinking the cats are working fine when they really aren't there because you installed an o/r midpipe.

[ttr038]

Yes, long tube, H pipe, High Flow Converters

[ttr038]

Talked to some guys from local shop, they said "welcome to long tube headers". Check it once a month to make sure its the same code and live with it.

[MorePowerMike]

Originally Posted by ttr038 Talked to some guys from local shop, they said "welcome to long tube headers". Check it once a month to make sure its the same code and live with it.

That's insanity. A properly set up tune should not throw codes, even with long tubes.

[JakeM]

Originally Posted by MorePowerMike That's insanity. A properly set up tune won't throw codes, even with long tubes.

Not true. You can't account for mechanical failure in a tune. If he lost a gasket or is running accessively lean/rich you will through a code. Get the drift?

So, lets say he was running even slightly rich, but for a long time. It slowly killed his 02 Sensor (mechanical failure) and now its respond super slow. Even slower than normal. Therefore he gets a CEL.

[06RedfireGT]

I think it throws this code because being farther back in the exhaust the o2s take longer to warm up and throw this code. I think in the tune you can delay the o2s turning on so it won't throw this code.

[MorePowerMike]

Originally Posted by 06RedfireGT I think it throws this code because being farther back in the exhaust the o2s take longer to warm up and throw this code. I think in the tune you can delay the o2s turning on so it won't throw this code.

For the situation above, you are correct.. Mechanical faulty O2s may cause that.

For the situation in the quote above. This is correct as well. The Tune needs to know that the location of the O2s has changed. This is way more common with 05 and up Mustangs and Longtubes.

[JakeM]

That would do the trick, Red, as long as the 02 isn't already to far gone.

[beefmobile]

so if i get LT's, high flow cats, splice in my current X pipe, i can hook up my o2's and they be functional?

[JakeM]

Originally Posted by beefmobile so if i get LT's, high flow cats, splice in my current X pipe, i can hook up my o2's and they be functional?

Only the Front two if your X is offroad. But yes. You may also need extensions.

[beefmobile]

no i said w/ LT's. that would only leave the actual 'X' left...

[JakeM]

I understand that. But if you are running Cat's then you can use all four 02's is what I'm saying. Regardless of your header/manifold choice. On the other hand, if your running a offroad x-pipe, AKA no cats, you only run two 02's. You may need extensions for your front two 02's either way because they are likely placed farther back than on the stock manifolds.