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U1262 code. U1262, and yes I've reset it. 2000 F150, 5.4L,

Customer Question
U1262, and yes I've...

U1262, and yes I've reset it.

Mechanic's Assistant: What is the model/year of your Ford?

2000 F150, 5.4L, Gas/propane

Mechanic's Assistant: Are you fixing your F150 yourself? What have you tried so far?

Yes. Iv

Mechanic's Assistant: Anything else you want the mechanic to know before I connect you?

Yes. I have two of these trucks; I smog certified one of them but the second one fails due to a U1262 code setting the mil

Submitted: 5 months ago.Category: Ford
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Answered in 5 minutes by:
11/11/2017
Ford Mechanic: EricFromCT, Ford Technician replied 5 months ago
EricFromCT
EricFromCT, Ford Technician
Category: Ford
Satisfied Customers: 4,500
Experience: 20 years dealership exp., ASE A1-A9 L1 L2, Ford Lincoln Mercury Senior Master, Diesel Certified
Verified

Hi. Welcome to chat! My name is ***** ***** I am currently a factory dealer auto mechanic. I will attempt to assist you with your concern today.

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Ford Mechanic: EricFromCT, Ford Technician replied 5 months ago

The code you have indicates that the compuvalve and the engine pcm are not communicating together anymore. This can be caused by a communication wire from the compuvalve to the pcm, but the most common cause is the compuvalve itself.

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Customer reply replied 5 months ago
What is your next guess, because I just swapped out a known good compuvalve from my other identical truck, and the code still pops up.
Ford Mechanic: EricFromCT, Ford Technician replied 5 months ago

The communication wires from the pcm to the compuvalve will need to be checked for continuity.

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Customer reply replied 5 months ago
Let me try that and I'll get back to you.
Ford Mechanic: EricFromCT, Ford Technician replied 5 months ago

Ok. DO you know which wires are the communication ones?

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Customer reply replied 5 months ago
You could give me a hint...before I do that, is it possible that the ECM could be the problem, or do you think the wiring is suspect? There are no other drivability issues, runs perfectly. The monitors all run...
Ford Mechanic: EricFromCT, Ford Technician replied 5 months ago

It is possible that the ecm is the problem. Compuvalve pin 14 tan/orange to pcm pin 16 tan/orange. compuvalve pin 16 white to pcm pin 15 pink/black.

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Customer reply replied 5 months ago
If you're right, you'll be the first real help on Justanswer that I've gotten. Sounds promising, I'll let you know!
Ford Mechanic: EricFromCT, Ford Technician replied 5 months ago

Ok.

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Ford Mechanic: EricFromCT, Ford Technician replied 5 months ago

Get any where with your truck?

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EricFromCT
EricFromCT, Ford Technician
Category: Ford
Satisfied Customers: 4,500
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Experience: 20 years dealership exp., ASE A1-A9 L1 L2, Ford Lincoln Mercury Senior Master, Diesel Certified

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