Check engine light-Codes u0100, p0420, p0316, p1260 triggered


Asked by Jul 30, 2016 at 01:22 PM about the 2007 Ford Expedition EL Eddie Bauer

Question type: Maintenance & Repair

2007 Ford Expedition-Finished replacing all spark
plugs and ignition coils,  had to jump start it after
the repairs. Battery seemed to be fine before doing
the work. It ran great for about 60 miles. Stopped
somewhere and it sat for two hours. Cranked up no
problem but at some point in the 60 miles back
home the check engine light came on. Made it
home fine, but now it won't start without jump
starting it.  Code reader is returning these codes:
u0100, p0420, p0316, p1260.  Has anyone
experienced a similar situation after replacing plugs
and ignition coils and have a diagnosis? Could it
just be related to jump starting? Is there a specific
connection I should check that might be loose that
would throw these codes in combination?  U0100 is
lost communication with ECM/PCM, P0420-catalyst
system efficiency below threshold bank 1, p0316
misfire detected in startup,  p1260-theft detected
vehicle immobilized.  Any enlightenment is much
appreciated. Thank you!

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