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Re: Codes 1639 & 1780 on 03' F150. Check engine light won't go off
Hi
If your VID block is corrupted you'll need to take the car to a dealer and ask them to reprogram the PCM using the tear-tag or the as-built data methods . There really is no other way to do it, as a normal reprogramming doesn't alter VID block parameters.
marc
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