Have a 2003 550 Service Truck that when I just scanned it had code p1780. Transmission Control Switch (O/D cancel) Circuit out of Self Test Range. My Mechanic that drives the truck has complained that the truck has sporadic power loss. Would this code effect performance? What sets this code off? And what corrective messures can be taken. Not fimilar with the Fords as I have always had Cummins. -

nomod_dodge01's Sig:

2001 Stock Dodge Ram 2500 SLT QC/SB, 4" MBRP SS, Airdog 100, 3.55 Gears, 4X4, Patriot Blue, Tinted, Dodge Snapless Tonneau Cover, 8' Fisher Plow....Future Plans gauges, tuner.

P1780 - Transmission Control Switch Out of Self-Test Range During KOER self-test the TCS has to be cycled, if not cycled a DTC is set. TCS circuit short or open
Damaged TCS switch
Damaged PCM
Verify the TCS switch cycles ON/OFF -

2500HeavyDuty's Sig:

The Original LB7
EFI LIVE, Suncoast IV, AirDog, Banks Intake, Mbrp Exhaust, Ranch hand bumper replacements, H2 wheels with 35's, and some secret squirrel stuff
12.9 @ 103