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Re: Programming a blank Ford PCM without tear tag
Posted to Technical Discussion Forum on 4/8/2021 6 Replies

There is a TSB 19-7008 on resolving P1635.

Might be worth a review.

As to P1639 it leads to the EEPROM section 2 of the PCED.

Otherwise start a new session in IDS, try to PMI the PCM, then program it to the latest calibration and retry the ATC code.

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