05’ FS65 - CAT C7 (crank but no start)

joshsmithd

New Member
Joined
Sep 14, 2025
Posts
1
Location
Manchester
Hey y’all,

I have a 2005 Freightliner FS65 Thomas bus with the Cat C7. I just started it up, let it warm up & build air pressure, moved it forward to mow as I’ve done several times since owning the bus a couple of months ago to mow where it’s been parked. Turned off the mower to move it back and it’s not running. I go back, turn the key off, back on, and trying crank. It’s cranks but won’t start.

Oil pressure tries to build as it’s cranking.

Code on dash is “1_1.1” and voltage is reading 12-12.5. Any ideas?
 

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