Output speed sensor Code 0720
4wd Low
Joined: Jan 2023
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Hi Mark, Thanks for responding. I see you have been a mechanic for a long time, can I ask you where in the wiring do problems usually occur? In the OSS wire connector itself or somewhere in the actual wires? Also do you think this wiring issue is causing the truck to stall in gear/idle and the occasional power loss and causing the 2 too lean codes P0171 & P0174? Thanks again... -Mike
Last edited by Fordman04; Apr 26, 2026 at 06:43 AM.
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