Decreased Power message
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Tuned
Joined: May 2011
Posts: 287
Likes: 2
From: Arvada, CO
Decreased Power message
Got a Decreased Power message across the dash info center today and was limited to only around 5lbs boost. I stopped and pulled the codes and here is what I found:
P054E - Fuel Quantity lower than expected
P1249
P1247
P0471 - Exhaust pressure sensor range/performance
P02D7 - Injector learning @ max
P0402 - EGR flow excessive detected
I dumped the trailer and limped home to change the fuel filters. I could only go 35mph on the flats and 10mph on any kind of up hill slope. I switched out the filters, purged the air, fired her up and cleared the codes, all seemed well. I backed out and went for a test lap around the neighborhood, as soon as I turned the corner and rolled on the throttle and reached 35 the message came back and the codes returned. Any Ideas?
I will be towing it in to the dealer tomorrow for diagnostics.
P054E - Fuel Quantity lower than expected
P1249
P1247
P0471 - Exhaust pressure sensor range/performance
P02D7 - Injector learning @ max
P0402 - EGR flow excessive detected
I dumped the trailer and limped home to change the fuel filters. I could only go 35mph on the flats and 10mph on any kind of up hill slope. I switched out the filters, purged the air, fired her up and cleared the codes, all seemed well. I backed out and went for a test lap around the neighborhood, as soon as I turned the corner and rolled on the throttle and reached 35 the message came back and the codes returned. Any Ideas?
I will be towing it in to the dealer tomorrow for diagnostics.
Super Moderator
Joined: Aug 2008
Posts: 37,377
Likes: 1,861
From: Frederick, MD
Not a clue.
P1247 Turbocharger Boost Pressure Low
P1249 Wastegate Control Valve Performance
Try and move that waste gate control valve.
This all seems related to one item to me.
EGR.
P1247 Turbocharger Boost Pressure Low
P1249 Wastegate Control Valve Performance
Try and move that waste gate control valve.
This all seems related to one item to me.
EGR.
Official Ford Rep
Joined: Oct 2010
Posts: 3,123
Likes: 6
Hi David,
I'm glad to see that your dealer will be diagnosing the truck today. How many miles are on it? I'll start working on some ways to help out, too.
Crystal
I'm glad to see that your dealer will be diagnosing the truck today. How many miles are on it? I'll start working on some ways to help out, too.
Crystal
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Tuned
Joined: May 2011
Posts: 287
Likes: 2
From: Arvada, CO
Thanks Crystal! There is 265,000 miles on it, no warranty on anything except the turbo, it was replaced @ 200,000 in December 2014. They think it is all caused by the exhaust pressure sensor not working. They will let me know in the morning.
Official Ford Rep
Joined: Oct 2010
Posts: 3,123
Likes: 6
Crystal
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Tuned
Joined: May 2011
Posts: 287
Likes: 2
From: Arvada, CO
Got the truck back today, and all is well again. The tech replaced the EBT sensor and while the upper intake was off found the connector to the VGT solenoid was broken so they replaced the connector and reassembled. The air cleaner was clogged also, I thought that I had replaced it in September but I didn't, Sure that didn't help any! I have no idea what the EBT sensor is or the VGT solenoid - but as long as it works that's all that matters.
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