Problem - Catalyis efficiency below threshold
06-15-2004, 01:59 PM
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Location: dallas, tx, usa
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Problem - Catalyis efficiency below threshold
1998 Honda Civic LX
8 Months ago I had a cracked exhaust manifold. I replaced it with one from a salvage yard.
3 weeks ago the check engine light came on. The code is P0420 Catalyst efficency below threshold - bank 1. Before I go out and purchase another exhaust manifold (no, i wont get it from a salvage yard again) is there any possibility that the sensor may be bad??? How do i check the sensor?
Thanks in Advance.
8 Months ago I had a cracked exhaust manifold. I replaced it with one from a salvage yard.
3 weeks ago the check engine light came on. The code is P0420 Catalyst efficency below threshold - bank 1. Before I go out and purchase another exhaust manifold (no, i wont get it from a salvage yard again) is there any possibility that the sensor may be bad??? How do i check the sensor?
Thanks in Advance.
06-15-2004, 03:39 PM
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Location: Santa Rosa, CA, USA
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Re: Problem - Catalyis efficiency below threshold (Marauder)
Yep bad cat. i am selling a couple if ou are interested. You will just need to have the one that is set up for an USDM itr shortened. OR you can buy the itr exhaust manifold i am selling also fo a little bost in your LX performance. Buy em both for a package deal and they should bolt up to your existing exhaust with no problems.
https://honda-tech.com/zerothread?id=895105 for FS post.
https://honda-tech.com/zerothread?id=895105 for FS post.
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98_civic_420
Honda Civic / Del Sol (1992 - 2000)
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07-22-2004 11:40 AM
