04 and up F Series truck failure reading pcm

Every 04 and up F Series Truck I attempt to tune has a read failure at 49.8% of the read. Has anyone else experienced this or is there a fix?

Thanks in advance.

Likely the pcm had been previously tuned or an inline module disrupting communications.

read faild at loc 80000 error. timed out.

this is the 3rd one in a week. i put them into DiabloSport with no problems. Has anyone experienced this?

pcm's were probably previously tuned then, possibly using a predator or other similar device.

i thought the same except 2 were completely stock and bought new by the customers. i tried a 3rd one here at the shop just for the hell of it and same thing. it goes to 49.8% read, stalls, and then retries several times and just quits.

Quote:

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Originally Posted by socaltuning

i thought the same except 2 were completely stock and bought new by the customers. i tried a 3rd one here at the shop just for the hell of it and same thing. it goes to 49.8% read, stalls, and then retries several times and just quits.

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socaltuning,

Did you figure out what the problem was?

Thanks