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2006 F-150 02 Sensor malfunction
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jpkaznowski Offline
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2006 F-150 02 Sensor malfunction
I am getting a dtc code P2195 and a constantly high (.89 to 1.07) reading coming from the o2 sensor? Do I need to replace it? This is a 2006 Ford F-150 4.2L V-6
08-03-2008 12:55 PM
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colchiro Offline
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RE: 2006 F-150 02 Sensor malfunction
What have you changed or installed?

Rick

Links: Documents / Tuning for Mileage | Toyota Sensors | Autoshop Sensor Tutorials
08-03-2008 01:19 PM
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jpkaznowski Offline
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RE: 2006 F-150 02 Sensor malfunction
colchiro Wrote:What have you changed or installed?

I had the efie installed but switched off. Also had a map enhancer switched off. hydrogengarage.com clear educational cell was installed but again also switched off. Weird thing happened though. I just took off the efie, reattached the wires and everything is back to normal. Possibly a defective efie?
08-03-2008 01:56 PM
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colchiro Offline
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RE: 2006 F-150 02 Sensor malfunction
... or bad connection. My o2 has SS wires so hard to solder.

Rick

Links: Documents / Tuning for Mileage | Toyota Sensors | Autoshop Sensor Tutorials
08-03-2008 02:30 PM
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jpkaznowski Offline
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RE: 2006 F-150 02 Sensor malfunction
colchiro Wrote:... or bad connection. My o2 has SS wires so hard to solder.

I traced the wires back on a diagram and did the splice about 2 inches from the ECM, so I'm not sure if they would still be SS. I also used the crimp connectors, which I wasn't too sure about, but they work just fine to reconnect everything after I took the efie off. On the efie test ports, I would get a reading on the o2 side of .89 to 1.07 and on the computer side of the efie it would read a flat .02, not fluctuating at all. When I cut the efie off I took readings from where I did the spice, close to the ecm and on the ecm side I got the same .02 reading and on the 02 side it was the same fluctuating .89 to 1.07 so it appears those are the standard readings when the wire is cut and there is no connection between the ecm and the o2 sensor. Weird that it never went into open loop though. Just a MIL. It was a dual efie and one side worked just fine, this is only happening to my passenger side o2 sensor. Any idea on how to bench test the efie? Hook a positive and negative straight from the battery and look for the offset in the test ports?
08-03-2008 03:10 PM
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colchiro Offline
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RE: 2006 F-150 02 Sensor malfunction
"On the efie test ports, I would get a reading on the o2 side of .89 to 1.07"

From black to ground is the sensor and should get you a fluctuating signal around .5 - .8, if you just started up the engine (rich), o/w a bit lower. The range should be within .1 - 1 volt. Sounds like you might have had the wrong wire.

When I said SS, I meant the wire from the sensor to the first connector (under the hood).

Rick

Links: Documents / Tuning for Mileage | Toyota Sensors | Autoshop Sensor Tutorials
08-03-2008 04:10 PM
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