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View Full Version : anyone with SCT4 experience on an F150



5.4MarkVIII
05-04-2019, 01:20 PM
put a tune on the truck a few months ago. SCT4 (bought from a buddy)

been no issue until yesterday I finally got around to reprograming for the 33 inch tires.

updated the tune with no issues but then when my wife took the truck to town the engine light came on and she said it ran funny. my app alert popped up saying truck in safe mode and to call dealer immediately.

my wife turned it off and tehn back on again and the code was gone. so far has not came back but pulled it this am and it said

P068A, ECM/PCM. Power relay De-energize performance too early.

any ideas?

should I revert to stock and then install the tunes again?

have not called the dealer yet.

its a 2018 F150 screw, 4x4 lariat sport, with the 3.5 EB and 10 speed

Minaccia
05-04-2019, 01:29 PM
This should help.


https://www.youtube.com/watch?v=jumVN2k4kb8

5.4MarkVIII
05-04-2019, 01:42 PM
Awesome thanks!