check engine light on after header installed...
Thread Starter
Joined: May 2004
Posts: 3
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From: chicago
check engine light on after header installed...
i have a 98 ex coupe and just installed a dc 4-1 header on my d16y8. i have intake, header, exhaust, and vtec controller. a few days after i installed my header, the check engine light went on. the dealership said that it was my o2 sensor that got burned out. they said it also has somethin to do with my vtec controller. i reset the ecu and the light stayed off for a day but then came back on. what should i do???
Joined: May 2004
Posts: 33
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From: chicago, IL, us
Re: check engine light on after header installed... (silvrcivic)
u have two o2 sensor one on the header and one on the cat. which one r they talkin about?with apexi controllers u can adjust fuel trim maybe it did have something to do wit it r u runnin' rich?
Joined: Dec 2001
Posts: 359
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From: Lynnwood/Pullman, WA, USA
Re: check engine light on after header installed... (silvrcivic)
Pull the code yourself and let us know what it is. It could easily be just the o2. I'm am curious to see what is though, as knowing that would allow us to tell you what you need to fix.
Brian
Brian
Joined: May 2004
Posts: 33
Likes: 0
From: chicago, IL, us
Re: check engine light on after header installed... (VtecDeMoN)
codes dont really tell u the problem if its a o2 sensor code it doesnt necessary mean ur o2 sensor is bad it might mean ur runnin to rich or too lean u need to diagnos the car do a fuel pressure test <TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by VtecDeMoN »</TD></TR><TR><TD CLASS="quote">Pull the code yourself and let us know what it is. It could easily be just the o2. I'm am curious to see what is though, as knowing that would allow us to tell you what you need to fix.
Brian</TD></TR></TABLE>
Brian</TD></TR></TABLE>
Honda-Tech Member
Joined: Apr 2002
Posts: 7,574
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From: Cincinnati,, Oh
Re: check engine light on after header installed... (silvrcivic)
<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by silvrcivic »</TD></TR><TR><TD CLASS="quote">P0141 Secondary Heated Oxygen Sensor (Secondary HO2S) (Sensor 2) Heater Circuit Malfunction</TD></TR></TABLE>
That's a pretty straight foward code. Is your secondry o2 plugged in? Are there any pins pulled out of the connector?
That's a pretty straight foward code. Is your secondry o2 plugged in? Are there any pins pulled out of the connector?
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Joined: May 2004
Posts: 33
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From: chicago, IL, us
Re: check engine light on after header installed... (silvrcivic)
in a haynes manual u might be able to get a flow chart on how to diagnos the code it might be a open or grounded wire the manual shows u how to test the circuits
Thread Starter
Joined: May 2004
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From: chicago
Re: check engine light on after header installed... (hondatechnician)
the dealership said that my dc header was too hot and is burnin the sensor. i got a new o2 sensor but then it just went on like a couple days later. im gonna be sellin my car and im gonna take out the vtec controller so i think that might solve the prob
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