quick history:
Bought a 00 civic dx hatch back in 2003.
Got out of the honda scene and used the car as a commuter car.
This year i have to smog the car to register and unfortunately CEL 41 shows up.

So i go to inspect the oxygen sensor and this is what i found.
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and i also broke one of the bolts for the heat shield while trying to remove it.
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The sensor is also stuck. I cant take it out.

My question is:
Is the crack in the manifold causing the code 41?
Will the CEL go away if i just change the sensor?
Do i have to buy a whole new manifold and cat?

Thanks in advance guys.

 

i dont think cracked exhaust manifold will caust the CEL on o2 sensor but u will need a new exhaust manfiold for sure.

 

is the exhaust manifold and the TWC Coverter one piece on the d16y7?

if so will i be able to buy a used one or do i have to buy a brand new one since its connected with the cat?

 

Your gonna need a new manifold no matter what. Go buy a new one and if you cant get that o2 sensor off, then buy a new one and it should fix both problems.

 

this sucks. i need to smog the car next month and i dont have enough cash to buy the exhaust manifold/cat right now. the sensor itself costs 93 bucks.

thats why i was wondering if the CEL was caused by the crack.
i was just going to change the sensor if that will take out the CEL so i can smog it. Then ill swap out the the manifold/cat later.

thanks for the quick replies.

 

bump

or should i just register it as a non-op and swap a k20 in later. muahahah.
if only i was rolling in cash.

 

41 = O2 heater = in no way related to the crack.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Relic1 &raquo;</TD></TR><TR><TD CLASS="quote">41 = O2 heater = in no way related to the crack.</TD></TR></TABLE>

oh ok. this is good news.
now i gotta find a way to remove and replace the sensor because it is stuck.

 

bro i got some good news for u i had to replace my sensor too on my 2000 civic ex and as far as the o2 sensor goes i got one new for ubber cheap.go to oxygensensors.com heres the exact link

http://www.automedicsupply.com...t=768

i got mine for 50.something shipped
there good and legitit took me like 4 days to recieve it
i got the cheapest one that u cut and connect to the plug connection so hope that helped on that

as for the crack ummm i dunno

 

What I think may have happened is that with the crack, the temperature around the sensor became too hot and over time could have burnt it out.

Instead of taking a chance with the new sensor, dont buy a new manifold, just run a quick bead with a mig welder. If you dont have 1, ask any shop to do it. Tell em you will give them $20 for 5 minutes of their time and you are groovin...

I had a crack in the manifold in kind of the same spot, right where 2 runners meet, on my AE86 corolla, I ran a bead and it was fine. And cheaper than a new set of TRD headers!

 

that crack will also cause a lean reading too

 

Thanks for the link mang. their prices are really good.

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by sohckid00 &raquo;</TD></TR><TR><TD CLASS="quote">bro i got some good news for u i had to replace my sensor too on my 2000 civic ex and as far as the o2 sensor goes i got one new for ubber cheap.go to oxygensensors.com heres the exact link

http://www.automedicsupply.com...t=768

i got mine for 50.something shipped
there good and legitit took me like 4 days to recieve it
i got the cheapest one that u cut and connect to the plug connection so hope that helped on that

as for the crack ummm i dunno</TD></TR></TABLE>

 

hey guys im new and dont know how this works but i have a 1993 Civic CX 1.5L manual with a 41 CEL code I've cleaned all my connectors, checked for shorts to ground and replaced the hole system from the manifold to the PCM, im out of Ideas...

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by manorfastlube &raquo;</TD></TR><TR><TD CLASS="quote">hey guys im new and dont know how this works but i have a 1993 Civic CX 1.5L manual with a 41 CEL code I've cleaned all my connectors, checked for shorts to ground and replaced the hole system from the manifold to the PCM, im out of Ideas...</TD></TR></TABLE>
41 = O2 heater
CX does not have O2 heater wiring nor O2 heater circuitry in the ECU.

You're obviously chipped (you should have mentioned that)
are you running the P05 or a VTEC ECU with your swap?

 

does a bad o2 sensor affect MPG

 

yes