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Old 04-08-2013, 18:15   #1 (permalink)
Jo Scibo
 
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P0155 check engine code 4.6

Changed the 4.6 engine running well overall but a few nagging codes. I changed drivers side pre cat with a Denso o2 sensor. It is plugged in its tight. Where is the fuse for the heater portion of the o2 sensor? I checked all the guides in the check engine code and possibilities but I'm struggling to find out why?


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Old 04-08-2013, 19:02   #2 (permalink)
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Re: P0155 check engine code 4.6

Check fig. 5 | Repair Guides | Wiring Diagrams | Wiring Diagrams | AutoZone.com
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Old 04-08-2013, 20:15   #3 (permalink)
Jo Scibo
 
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Re: P0155 check engine code 4.6

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Originally Posted by Bert View Post
This takes me to Autozone?


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Old 04-08-2013, 21:32   #4 (permalink)
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Re: P0155 check engine code 4.6

I doubt the fuse is blown or you would have a large number of codes because the same fuse feeds a lot of other functions..
The 155 code is only for one sensor.
Be sure the sensor plug mates with the Ford plug, look for harness damage.
Any ways check fuse 23 in the engine bay to be sure.
Goood luck.
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Old 04-08-2013, 22:32   #5 (permalink)
Jo Scibo
 
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Re: P0155 check engine code 4.6

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Originally Posted by Bluegrass View Post
I doubt the fuse is blown or you would have a large number of codes because the same fuse feeds a lot of other functions..
The 155 code is only for one sensor.
Be sure the sensor plug mates with the Ford plug, look for harness damage.
Any ways check fuse 23 in the engine bay to be sure.
Goood luck.
I did have an EGR gas recirculating flow insufficient code detected of p0104. The air intake wasn't clamped tight and there was a vacuum line loose too. The harness is a match plugged right in no problem. It will idol rough from time to time I'm not sure if the EGR problem was causing that or if its the 155 code that makes that happen?


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Old 04-09-2013, 08:21   #6 (permalink)
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Re: P0155 check engine code 4.6

Quote:
Originally Posted by joscibo View Post
This takes me to Autozone?


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That is correct. They have free repair guides and wiring diagrams.
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