P0107 code help and dealership story - Diesel Forum - TheDieselStop.com
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99 & up 7.3L Power Stroke Engine and Drivetrain Discussion of the 99 & up 7.3L Power Stroke diesel engine and drivetrain in the 1999-Up Super Duty trucks and Excursions. No gas engine discussion allowed except on transmissions and drivetrain that pertain to all models. Please confine discussion of topics in this forum to those items that are specific to the 7.3L Power Stroke engine.

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Old 05-12-2005, 06:40 PM   #1 (permalink)
avi
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P0107 code help and dealership story

Short questions first:
What exactly causes the P0107 (Barometric pressure sensor circuit low input)code to be set? I assume a barometric sensor? If so, can somebody point me where to find that sensor?

Long story:
I had my truck in the dealership today to have the water pump replaced. They called me and asked if I wanted them to check out the "Service Engine Soon" light. This stunned me because I've owned this truck for a year now with no problems and no codes all the way up until last night when I dropped it off for the water pump for replacement today. I told them to not do anything about it since I was very suspicious that it would suddenly throw a code while at the dealer. When I picked up the truck I asked about the light and he said the tech said it went off about half way through the test drive and didnt come back on.

I drove it home with no light and then pulled the P0107 code which is a low input on the barametric sensor input. I cleared the code and will watch it closely to see if it sets it again.

Here's my conspiracy theory: I bought the water pump at Powerstrokeshop.com and had my local dealer do the work for $130 (pretty reasonable). Since its a low voltage code I wonder if it was unplugged to set the code and a way for them to get at least $40 more for diagnostics and a way for them to make a few extra bucks for the lost parts revenue. Possibility? Sure, but I hope they wouldnt stoop that low.

In any case, I need to know where to locate this sensor just in case it really is going out on me or possibly has a loose plug.

Thanks guys!
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Old 05-12-2005, 07:14 PM   #2 (permalink)
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Re: P0107 code help and dealership story

You won't find a barometric sensor on your truck. My source (99 Service CD) says that the BARO sensor was built into the PCM on 99.5 & newer trucks. On the early 99's I think it was supposed to be mounted under the left side of the instrument panel near the steering column.

If the code comes back, it may indicate that your PCM has gone south. Might have just been a random code brought on because the truck was nervous about being at the dealer's service department. [img]/ubbthreads/images/graemlins/depressed.gif[/img]
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Old 05-12-2005, 07:20 PM   #3 (permalink)
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Re: P0107 code help and dealership story

[ QUOTE ]
Might have just been a random code brought on because the truck was nervous about being at the dealer's service department.


[/ QUOTE ]
Thats funny [img]/ubbthreads/images/graemlins/biggrin.gif[/img]
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Old 05-12-2005, 07:52 PM   #4 (permalink)
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Re: P0107 code help and dealership story

I just did some reading on the "secrets" and learned a thing or two about the sensor. So, since it is built into the PCM on my model year is there any way that this could have been set somehow by the dealer? (I dont care if its intentionally or accidental at this point).

I'm going on a 2 week trip in about a month pulling our trailer and just want to know that everything is in good working order before we leave. I realize that this sensor isnt extremely important and the PCM can use the MAP readings but that doesnt make me feel very confident.
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Old 05-12-2005, 08:30 PM   #5 (permalink)
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Re: P0107 code help and dealership story

I had the P0107 code come up. The bad baro sensor would cause an intermittent low boost problem, which meant I had very little power. I had to replace the PCM (since the baro sensor is built into it).

As for the dealer - I don't see how they could have mede this problem to occur.
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Old 05-16-2005, 10:34 AM   #6 (permalink)
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Re: P0107 code help and dealership story

4 Days later with about 5 different driving sessions ranging anywhere from in town, to a dirt road up a mountain, to 75mph freeway and the Barometric pressure error has not occurred again. It still seems really odd to me that it would only happen the morning I left it at the dealer....
Maybe it was just nervous about the time it had to spend at the dealer [img]/ubbthreads/images/graemlins/smile.gif[/img]
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