Question about 2001 Ford Expedition

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9 codes on my diagnostic tool

I got the readings P0743, P0755, P1747, P0443, P1451, P0135, P0141, P0155 and P0161. My biggest issue is that I never had any reason to think there was a problem with the vehicle. I just got in it one morning and the check engine light went on and the overdrive light on the gear shift was blinking. I never had one issue prior to these lights that morning?????

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  • Anonymous Aug 11, 2008

    I have the same problem

  • usalandman Sep 24, 2008

    My codes are P0743, P0755, P1747, P0443, P1451, P1409, P0135, P0141, P0155, P0161. The last 4 are Oxygen sensor heater circuits. The first 3 are trans codes. A mechanic told me that something in the trans is causing a short circuit causing current to backfeed into the O2 sensors causing these codes. The vehicle was running great and this just happened suddenly. The car has no power now and the OD light is flashing on the steering column as well. He said a piece of the torque convertor may have broken off and gone in the trans causing the short, I am pulling the pan today, any help would be greatly appreciated!.

  • trickhaworth Oct 13, 2008

    I dont know what the codes were when I had a similar problem, but the problem ended up being that the wire for the O2 sensor had melt against the exhaust and shorted out against the transmission case causing the trans to malfunction as well as the O2 sensor. This might be a good place to start checking, I wish I had since a $50 part cost me $400 to fix at the shop. Just a thought, good luck

  • Anonymous Mar 24, 2014

    Check engine light staying on and car hesitating when I stop or slow down. Auto Zone engine fault codes P0155, P0161, P0443, P0135, P0141 came up. Bought four oxygen sensors to replace them out if bad. Replaced two oxygen sensors and engine light went out. Engine light came back on and re-checked engine fault codes at Auto Zone. Now codes read -- P0443, P0141, P0155, P0161, P2195, P2197. Can you help? What do I need to do to get the engine light to turn off?


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I hade the same problem and i read in the blog about the fuse # 23 being blown. i check it replace it and my t01 expedition work great againd.

Posted on Jan 25, 2012

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I have the same problem now did you find out what went wrong ?? let me know if you did

Posted on Dec 21, 2010

  • tansley30 Dec 21, 2010

    I also have this problem what did you figure out after ?


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Did you ever get a solution for this? I am having the same problem, same codes!!!

Posted on Sep 24, 2008

  • holgerea Dec 03, 2010

    I am having the same problem, same codes!!!
    can any body help me please?

  • Paula Gorman
    Paula Gorman Jul 03, 2016

    Going to try fuse #23 and look at wiring harness. Exact same codes popped up out of nowhere..


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