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P2195 and p2196 codes popped up recently on 2003 Explorer 4.0

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08 Jul 2019 20:24 #31573 by Floridaexplorer
Muffler pipe rusted replaced muffler but no pipe after muffler. Recently 2 codes popped up: P2195 and p2196

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08 Jul 2019 20:29 #31576 by Floridaexplorer
Screenshots

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08 Jul 2019 20:32 #31577 by Floridaexplorer
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09 Jul 2019 10:18 #31594 by Tyler
Were all these photos taken with the fuel system in Closed Loop?

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09 Jul 2019 11:16 #31598 by Floridaexplorer
Closed loop
Attachments:

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09 Jul 2019 11:51 #31601 by Tyler
Great, just wanted to verify. :) It sure seems like you have a failing O2 sensor.

My only concern is for the B1S1 wiring. I never saw the B1S1 signal show more than 545mV, so it's possible that you're seeing some kind of high resistance in the sensor signal wire. I'd suggest doing a circuit integrity test on the B1S1 signal wire first, before replacing that sensor.

This video demonstrates the concept perfectly:

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09 Jul 2019 11:54 #31603 by PDM
That would be wild! Voltage limited by wiring on such a small scale

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09 Jul 2019 12:12 #31607 by Floridaexplorer
Fuel system 2 states N/A but fuel system 1 states cl.
Code hasn't returned but running rough.

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09 Jul 2019 12:14 #31608 by Floridaexplorer
My scan tool seems to read in volts not millivolts.

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09 Jul 2019 12:33 - 09 Jul 2019 12:34 #31611 by Tyler

Floridaexplorer wrote: Fuel system 2 states N/A but fuel system 1 states cl.


That's typical of data from Global OBD. Not to worry. :)

Code hasn't returned but running rough.


Even before it goes into closed loop? Or only after it goes into closed loop?

Floridaexplorer wrote: My scan tool seems to read in volts not millivolts.


No worries. 545mV is the same as .545V. Just moving the decimal point around.
Last edit: 09 Jul 2019 12:34 by Tyler.

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09 Jul 2019 12:41 #31613 by Floridaexplorer
2195 and 2196 has not returnee.
No pipe after muffler

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Yesterday 01:06 #31986 by Floridaexplorer
How to check cat for clog?

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