05 xterra P0430, replaced cat... twice.

Forum for the Xterra, Frontier and Hardbody, the smaller workhorses of the Nissan lineup!
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Greenman666
Posts: 15
Joined: Thu May 31, 2012 6:41 pm

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Hi nico, I'm going nuts trying to solve this headache. I'm a tech at a shop, we diagnosed the truck as a bad cat. It returned with the same code. O2 volts on b2s1 are twice what b1s1 is. Any ideas? The first time it came back we couldn't justify a second bad converter so guy took it to Nissan, they said it's the cat so we warrantied that one. Second converter same thing. Help?

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Towncivilian
Posts: 4868
Joined: Sun May 23, 2010 10:21 am
Car: 2001.5 Nissan Pathfinder SE 3.5L 2WD A/T
2007 Nissan Altima 2.5L CVT
2012 Nissan Sentra 2.0L CVT Special
2012 Infiniti G37 Sedan 7A/T
Location: Florida, USA
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Page EC-317 of the factory service manual has an extensive diagnostic procedure, try to follow it.
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