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Old 12-15-2012, 11:00 PM   Thread Starter #1
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Default Codes galore!

It's me again. My 06 maxima's p0420 code come up on a regular scanner but the heater circuit codes (4)came up on a snap-on wireless scanner. All diagnostics were within range. But I think he said that the bank 1 downstream sensor was dragging a very little bit.
I have replaced both downstreams already. The front sensor went together good but I couldn't get the bank 1 sensor to go together that well. My mind is fried thinking about it. We are going to put a smoke test on the vacuum lines and check some other things. If its the same code then it looks like my bank 1 gets replaced. UGH!!! Hopefully the code wasn't cleared all the way. I don't know. I will find out what it is.
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Old 12-16-2012, 10:40 AM   #2
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Default Re: Codes galore!

Bump!
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Old 12-16-2012, 02:57 PM   #3
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Default Re: Codes galore!

Originally Posted by chrisstew14 View Post
It's me again. My 06 maxima's p0420 code come up on a regular scanner but the heater circuit codes (4)came up on a snap-on wireless scanner. All diagnostics were within range. But I think he said that the bank 1 downstream sensor was dragging a very little bit.
I have replaced both downstreams already. The front sensor went together good but I couldn't get the bank 1 sensor to go together that well. My mind is fried thinking about it. We are going to put a smoke test on the vacuum lines and check some other things. If its the same code then it looks like my bank 1 gets replaced. UGH!!! Hopefully the code wasn't cleared all the way. I don't know. I will find out what it is.
Your post is not clear and contradicting. Need more info and clarification to even begin.

1.You state all diagnostics were within range but then you follow up with line that bank one downstream was slow in response/dragging?

2.The front sensor went together good....but rear sensor you couldn't get together good....? Do you mean the data between the 2 banks fluctuates?

3. Have you replaced/or removed at anytime the front A/F sensors?

4. When you replaced Both heated downstream oxygen sensors did you splice in universal or did you purchase plug and play sensors. Were they brand New? Is the
Livestream data fluctuating within ranges? 0.1-0.7v when you apply throttle steady @ around 2-2500 rpm with vehicle warmed up? Did you perform resistance checks on the sensors?

Please be specific in your answers. This will help. Also. List of ALL CODES GALORE as the title states. Not just PO420.
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Last edited by BurntOrangeAppeal; 12-16-2012 at 03:01 PM.
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