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Old 10-19-2009, 10:51 AM   #1
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No O2 reading

Ok I have been trying to have Tom remote tune my car, but we have run into a snag. My ecu is not getting a reading from my O2 sensor. I have replaced the sensor, checked the fuse, and checked for power at the plug. I can't find anything wrong.

Anyone have this problem or maybe someone has a diagram of the ecu pin out from an 04? I need to check there and see if its getting a signal.

I really need help with this quick. We can't work more on the tune till we know the reading and its affecting my idle.


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Old 10-19-2009, 04:47 PM   #2
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Anyone? I got a print out from Ford of the pinout, but I am still wondering if anyone else has had a problem like this?
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Old 10-20-2009, 12:41 PM   #3
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No one has had a problem with stft1 reading?
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Old 10-22-2009, 05:33 PM   #4
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Have you not gotten any CEL's?
Run the stock tune and see what happens...
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Old 10-22-2009, 06:02 PM   #5
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He did go back to stock same thing

Tom
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Old 10-22-2009, 07:27 PM   #6
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Yeah it really weird. And no CELs.
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Old 10-22-2009, 07:38 PM   #7
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Ok went and scanned again for shits and giggles and it showed 2 codes. P2195 and P2196.
One means O2 stuck lean and the other means O2 stuck rich.
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Old 10-22-2009, 08:56 PM   #8
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Originally Posted by disciplerocks View Post
Ok went and scanned again for shits and giggles and it showed 2 codes. P2195 and P2196.
One means O2 stuck lean and the other means O2 stuck rich.
It makes sense to me if
you are having an connection problem. If I was you I would replace the cable to the sensor and check the ground.
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Old 10-22-2009, 08:59 PM   #9
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Thats what I was thinking too. Unfortunately the print out Ford gave me does not show power or ground, just the 2 wires that go to ecu. I know which is power from checking it with a test light, but is the 4th wire ground or does it ground itself on the exhaust?
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04 ZX3 5.0, T5, 4 lug 7.5 w/ 3.73s [3/13 ROTM] ["Best Non-SVT" FITF '12]
12 SE Hatch Sport & Winter Package, ST Front End
91 Ranger XLT 3/4 drop
89 Bronco II XLT Well the body is still stock, what's left of it
97 Mountaineer 5.0, AWD, 3.73s

Last edited by disciplerocks; 10-22-2009 at 09:00 PM. Reason: i can't spell
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Old 10-22-2009, 09:15 PM   #10
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good question...don't know the answer
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