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I have a pending code, P0041, downstream heated exhaust oxygen sensors swapped from bank to bank.
Went to ford parts and looked at diagram (was just going to buy new sensors for preventive measure) and it clearly shows only 1 downstream sensor in top of cat.
Called Ford parts and they said they show two downstream.
Crawled all around today and found solid plug in top of cat. No wiring harness anywhere near the area.
My maintenance book makes not mention of downstream sensors.
Clear it, and see if it comes back. And try another scanner.
I would have thought that a 2006 F53 was OBD-II compliant, but it's possible if the GVWR is high enough that it's not. What is the GVWR on the door sticker?
Clear it, and see if it comes back. And try another scanner.
I would have thought that a 2006 F53 was OBD-II compliant, but it's possible if the GVWR is high enough that it's not. What is the GVWR on the door sticker?
From what I can tell, anything over 14K GVWR is not required to be OBD-II compliant. This MIGHT mean your truck never had the downstream O2 sensor.
Why the PCM is complaining about it is weird. Is this something that just happened out of the blue? Or did you just buy this vehicle and you noticed the pending code?
Nothing has changed. As far as I know, this pending code has been there for years. I went through all pending codes just for kicks and thought I would investigate. Running up to 85K miles and wanted to do a bit of preventive maintenance. One fellow said I should go get it reflashed at dealer.
My '01 F250 V10 used to have a P1000 code pending. All the time. If I went to look at the monitors' completed status, it would have something like "downstream O2 heater incomplete" and "Catalyst monitor incomplete" (not exactly those words, but close enough).
The problem turned out to be trying to read codes with 5star tune installed. I went back to stock and everything is fine.
On another note, I decided to have Ford do a reflash since I had these weird issues happening. Tech mentioned that there was an update. I didn't think much of it so didn't bother to ask him about it.
Driving home, finding the transmission shifts almost the same way my 5star tune did. I found it interesting Ford would modify the ECU so much on a 2006. I need to take a longer trip to confirm but no more crazy downshifting and engine self-destruct high RPM when encountering small hills.