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Old 06-30-2011, 07:48 PM   #1
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HELP!!!

Code. P1151
Lack of ho2s-21
Switches-sensor
Indicates lean
(b2,s1)

I have PYPES TRUE DUAL OFFROAD EXHAUST from American muscle...
No catts

Question: what could this be?

And if this is about o2 sensors are they still needed even tho I don't have cats? And do they go bad and when they do must I change them???
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Old 07-01-2011, 04:50 AM   #2
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if you run a no cats exhaust you either need to live with the check engine light or buy some Mil eliminators. they plug into the rear o2 sensors and remove the code from showing up, therefore shutting off the light. these won't help you pass emissions though if your in a state where you have to worry about that
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Old 07-01-2011, 06:31 AM   #3
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Quote:
Originally Posted by derekb_
if you run a no cats exhaust you either need to live with the check engine light or buy some Mil eliminators. they plug into the rear o2 sensors and remove the code from showing up, therefore shutting off the light. these won't help you pass emissions though if your in a state where you have to worry about that
I have mil eliminators and a custom tune... That light should have been off...
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Old 07-01-2011, 06:33 AM   #4
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Quote:
Originally Posted by derekb_
if you run a no cats exhaust you either need to live with the check engine light or buy some Mil eliminators. they plug into the rear o2 sensors and remove the code from showing up, therefore shutting off the light. these won't help you pass emissions though if your in a state where you have to worry about that
Oh I have my eliminators in the front... O.o
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Old 07-01-2011, 08:14 AM   #5
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Re: HELP!!!

mil eliminators are known to not work 100% of the time, turn them off in the tune and you wont even need them
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Old 07-01-2011, 11:15 AM   #6
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I don't have cats. Are the o2s still that important that I need to change the
Out?
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Old 07-01-2011, 11:15 AM   #7
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Bc I have a tune, and mil eliminators. And the engine light still comes on
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