2000 eclipse giving code po431 - Mitsubishi Forum - Mitsubishi Enthusiast Forums


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Old 12-21-2008, 02:29 AM
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Default 2000 eclipse giving code po431

I have a 2000 eclipse gt v6 the check engine lite is on ran a obd11 check it gives me the code po431 bank 2 it shows the catalytic converter is defective my question is would this be the catalytic converter thats on the rear next to the firewall or the one on the front just behind the radiator and witch o2 sensor should i check. Thanks
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Old 12-21-2008, 12:44 PM
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Default RE: 2000 eclipse giving code po431

Are your cats "cleared"?
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Old 12-21-2008, 04:03 PM
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Default RE: 2000 eclipse giving code po431

Thecat you want is the one in front near the rad. As long as the os sensors are working fine for bank 2 thenreplace the cat assembly.
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Old 12-21-2008, 04:59 PM
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Default RE: 2000 eclipse giving code po431

Thanks where are the 02 sensors located for bank 2
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Old 12-21-2008, 06:05 PM
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Default RE: 2000 eclipse giving code po431

Before and after the cat.
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Old 12-21-2008, 06:19 PM
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Default RE: 2000 eclipse giving code po431

Thanks for the info i will check the o2 sensors.
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03, 2000, 2nd, bank, check, code, eclipse, engine, galant, mitsubichi, mitsubishi, montero, po431, service, v6

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