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Exhaust pressure sensor

Dave1899

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This has happened at least 12 times since January when I bought the truck. The dealer has "fixed it twice" but it keeps happening. The check engine light will come on and stay for several days then disappear and come back on again. I don't notice any difference in the performance. Has anyone else had this problem?
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C141B FE

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When your dealer "fixed" it, what did they do? Did they change the EGR pressure sensor or something else?
 


Dave1899

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When your dealer "fixed" it, what did they do? Did they change the EGR pressure sensor or something else?
They told me there were two exhaust pressure sensor valves and they only thought it was one that needed to be replaced. The second time I brought it back and they said they replaced the other one.
 

C141B FE

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They told me there were two exhaust pressure sensor valves and they only thought it was one that needed to be replaced. The second time I brought it back and they said they replaced the other one.
Gotcha Dave. Frustrating for sure. If the sensors are working, I wonder if there's a faulty/loose hose in the system. I'd take it back to the dealer and have them check.
 

sbacpo

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Make that two of us.

Any advice on this besides "take it to the dealer". (which is solid advice) Where exactly are these sensors?
 

Dave1899

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Make that two of us.

Any advice on this besides "take it to the dealer". (which is solid advice) Where exactly are these sensors?
As I said the dealer "fixed' the problem 3 times and it is still happening. I got tired of leaving it there and the problem still happens and now at least 20 times. The engine light comes on and a few days later it goes out. Truck runs fine all the time. Maybe a little black adhesive dot to put over the light would fix it...LOL
 

awd.nv

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Just sharing some info, had an intermittent P0471 check engine light come on. The tech replaced the "Exhaust Pressure Sensor." Truck is approaching 50k miles.

I use a Scan Gauge ii daily which is what I used to clear it. Sometimes it would come back in a few mins and sometimes a few days. No perceived power loss and still drove normally. Was covered under an emissions warranty so didn't even need to use my extended warranty. It has been a week now and no more CEL so I presume the correct component was replaced.

Here is the frustrating part and why I am worried to upgrade the radiator, intercooler and do a tune. My local Ford dealer is nuts and the others near by I don't know will be any better. My service history and "relationship" was built on the dealer closest to my home.

The assistant service manager was walking the drive since it was a little backed up. He asked me what I was in for, mentioned I have an appointment for a check engine light (CEL). He looks at the Tremor and said "it looks lifted", I say "yeah its a Tremor". Sees my Scan Gauge ii near the instrument cluster and makes a big deal out of it. "I have seen those things cause intermittent CEL" he says. I tell him "its not a tuner or pedal commander, it just reads temps since I tow. I have had it on the truck since day 1." He then says "I am going to have to call the foreman over." I am now frustrated since my wife is waiting to pick me up. My advisor shows up and wonders what the big deal is (worked with him once before). The foreman finally comes and gets filled in on the issue and looks confused as to why he was even called over.

They already require a 1hr commitment should it not be warranty, write the damn thing up is my thought so I can get out of here. Ultimately it was covered.
 

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Just to clarify - This is not the historical - DPFE Sensor, this is for Exhaust Backpressure readings, still plays a role with EGR valve control though.
 

DukeCanBuildit

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Just sharing some info, had an intermittent P0471 check engine light come on. The tech replaced the "Exhaust Pressure Sensor." Truck is approaching 50k miles.

I use a Scan Gauge ii daily which is what I used to clear it. Sometimes it would come back in a few mins and sometimes a few days. No perceived power loss and still drove normally. Was covered under an emissions warranty so didn't even need to use my extended warranty. It has been a week now and no more CEL so I presume the correct component was replaced.

Here is the frustrating part and why I am worried to upgrade the radiator, intercooler and do a tune. My local Ford dealer is nuts and the others near by I don't know will be any better. My service history and "relationship" was built on the dealer closest to my home.

The assistant service manager was walking the drive since it was a little backed up. He asked me what I was in for, mentioned I have an appointment for a check engine light (CEL). He looks at the Tremor and said "it looks lifted", I say "yeah its a Tremor". Sees my Scan Gauge ii near the instrument cluster and makes a big deal out of it. "I have seen those things cause intermittent CEL" he says. I tell him "its not a tuner or pedal commander, it just reads temps since I tow. I have had it on the truck since day 1." He then says "I am going to have to call the foreman over." I am now frustrated since my wife is waiting to pick me up. My advisor shows up and wonders what the big deal is (worked with him once before). The foreman finally comes and gets filled in on the issue and looks confused as to why he was even called over.

They already require a 1hr commitment should it not be warranty, write the damn thing up is my thought so I can get out of here. Ultimately it was covered.
Nothing says “I‘m married to the owner’s daughter“ quite like someone who doesn’t really know what he’s talking about but has the title Assistant Service Manager.
 
 








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