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P0031, P0134

Old 05-15-2008, 12:17 AM
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Join Date: May 2008
Posts: 1
Default P0031, P0134

Hey everyone, just curious to know if anyone has run into this problem before? I'm in the process of changing the o2 sensors in the MPV seeing as the car has over 107k miles and the gas prices are starting to get a little crazy! Anyways, I replaced the one in the front bank about a week ago. No problems. I replaced the one in the rear bank (the firewall) drive the car around everything is fine. The next day the wife goes to drive the car and the check engine light is on. The codes read p0031, and p0134 reads as a pending code (whatever that means). It also mentions something about I/M monitors and I get hits on Catlyst, Evap, O2 Snsr, and EGR. Everything else reads ready.

The question is how long does it take for these four i/m monitors to read ready, and once they finally do, will that clear the other codes or do I have to do that manually?

Thanks for any help you guys may be able to offer, this is something I've never come across before.
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