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Old Dec 11, 2023 | 11:55 AM
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Service Engine Soon

Hello,

I just submitted a post about my windows. I have another question. I recently replaced my EGR Valve Pressure Sensor. After about a week, my truck's Service Engine Soon Light came back on.
Went to auto zone, and they pulled the code again. Same recommend part replacement.

The code is saying "System Too Lean (Bank 1)"

My truck is: 1999 F-250 V-10 Triton Extended Cab
Any help pointing me in the correct direction to address this is much appreciated.



 
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Old Dec 11, 2023 | 12:05 PM
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Why would they have you replace an EGR pressure sensor, when 'bank 1 too lean' is usually related to the O2 sensors or bad/clogged injectors?

What is the code? Not the description, but the actual code...usually P0xxx format.

Of course, I had a guy at Auto Zone try to tell me that the rear O2 sensor and a catalytic converter aren't related to each other. So, there's that.
 
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Old Dec 11, 2023 | 12:38 PM
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I once had an Autozone employee argue with me that a front wheel drive Fusion did not have an engine that sat crosswise in the car. He said it was in the same orientation as a rear wheel drive car.

Moral of the story: Most employees at an Autozone know how to run a cash register, and not much else.
 
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Old Dec 11, 2023 | 01:38 PM
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Originally Posted by 99powerstrokedF250
Why would they have you replace an EGR pressure sensor, when 'bank 1 too lean' is usually related to the O2 sensors or bad/clogged injectors?

What is the code? Not the description, but the actual code...usually P0xxx format.

Of course, I had a guy at Auto Zone try to tell me that the rear O2 sensor and a catalytic converter aren't related to each other. So, there's that.
It was the suggested part to replace given that code.

And the code is P0171
 
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Old Dec 11, 2023 | 03:00 PM
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That makes no sense at all.
 
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Old Dec 11, 2023 | 03:09 PM
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Originally Posted by Mark Kovalsky
I once had an Autozone employee argue with me that a front wheel drive Fusion did not have an engine that sat crosswise in the car. He said it was in the same orientation as a rear wheel drive car.

Moral of the story: Most employees at an Autozone know how to run a cash register, and not much else.
had one try to tell me there never was a AOD_E trans only aod's , when the aod became the aod-e in 19992 than became the 4r70w and 4r75w .i stood there showing him this saying 50 years as a dealer master tech i'm calling BULL on you

 
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Old Dec 11, 2023 | 03:32 PM
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Originally Posted by Mark Kovalsky
I once had an Autozone employee argue with me that a front wheel drive Fusion did not have an engine that sat crosswise in the car. He said it was in the same orientation as a rear wheel drive car.

Moral of the story: Most employees at an Autozone know how to run a cash register, and not much else.
Ah yes, the famous Fusion derived from the Eagle Premier, cousin of the Chrysler LH cars, back when Ford and Chrysler were all divisions under Packard. That Fusion.
 
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Old Dec 11, 2023 | 08:45 PM
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I call O2 sensor!
 
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Old Dec 13, 2023 | 10:35 PM
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Originally Posted by willpoin
It was the suggested part to replace given that code.

And the code is P0171
P0171 would never have told me to replace the EGR pressure sensor. First thing I'd do with a P0171 is look for vacuum leaks, then check fuel pressure.

Just FYI, to you and the Autozone meter holders: These codes don't directly indicate the broken part. They give information that allows further diagnosis. If my face says "Ow! My hand hurts!", that doesn't mean [replace the hand]. It means [the hand hurts, go investigate]. Is it injured? . . . caught in a vice? . . . large crate of Jujubees sitting on it? . . . on fire? . . . stabbed with a pencil?
 
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Old Dec 13, 2023 | 10:40 PM
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Originally Posted by twobelugas
Ah yes, the famous Fusion derived from the Eagle Premier, cousin of the Chrysler LH cars, back when Ford and Chrysler were all divisions under Packard. That Fusion.
That's why they called it the Fusion, right? In honor of the fusion of Ford, Packard, Chrysler, and Eagle! Fusion sure sounds better than "Packslergleord"! . . . or Stellantis for that matter.
 
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