code p1780
08-04-2006, 09:59 AM
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code p1780
does anyone know what might cause this code. thanks
08-04-2006, 10:16 AM
Join Date: Jan 2003
Location: Connecticut
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What year is the truck, and which engine?
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.
Possible causes:
l TCS circuit short or open
l Damaged TCS switch
l Damaged PCM
08-04-2006, 10:23 AM
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08-04-2006, 10:37 AM
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The Transmission Control Switch is the button at the end of the shift lever on the steering column.
08-04-2006, 02:44 PM
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