Can Faulty PCM Be Reprogrammed

[tcmc11]

My 2021 PB Lariat began to misfire and was diagnosed with a faulty PCM. 15k miles.
I was told to not drive it, and it's been parked at dealership for almost 3 weeks.
Per Ford, I am looking at another 10 days minimum before dealer gets the part. No guarantees then.
My question is can the current pcm be flashed/reprogrammed so I can drive the truck while waiting on the new part?

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[dolsen]

@Jesse-Infotainment might be the best person to ask

 

[Snakebitten]

I'm going to get bit one of these days for being so skeptical, but I'm not buying the faulty powertrain control module diagnosis.

It seems with these Gen14 trucks the service departments are so lacking in expertise that at the first sign of unexplained symptoms or results they automatically declare the modules defective.

I know it's possible, but you will know for sure if the same day the new pcm arrives you should get your truck back.

I will happily eat crow for your benefit.

 

[Jesse-Infotainment]

It can definetley be reflashed. Im curious about the diag though.

 

[Porpoise Hork]

I'm going to get bit one of these days for being so skeptical, but I'm not buying the faulty powertrain control module diagnosis.

It seems with these Gen14 trucks the service departments are so lacking in expertise that at the first sign of unexplained symptoms or results they automatically declare the modules defective.

I know it's possible, but you will know for sure if the same day the new pcm arrives you should get your truck back.

I will happily eat crow for your benefit.

Well when you look at some of the recent and in some cases serious quality issues Ford has had, it would not surprise me in the least that there would be a batch of faulty modules out there. But yes many of the techs are woefully lacking in the changes with the current generation of F150's.

 

[imnuts]

If it's truly faulty, reflashing it isn't going to fix anything. Did you or the dealer do any other troubleshooting though before the diagnosis? Move/replace coil packs, check the plugs, check wiring?

 

[tcmc11]

Yes,, the tech supposedly went through various checks before settling on the PCM.
Sounds like it wouldn't hurt to ask them to reflash it. At least we would know for sure if it's bad or not.

Thanks for the responses.

 

[tcmc11]

Update:
By surprise, replacement PCM made it the dealer earlier than expected.
Picked up my truck today and just finished a 200 mile trip. So far so good.
According to the paperwork, only work done was replacing the PCM.

 

[Jesse-Infotainment]

Glad to hear it worked out for you

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