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Old 10-16-2012, 04:56 PM
Kingwood43 Kingwood43 is offline
Dodge Ram Forum Newcomer
Join Date: Oct 2011
Location: Gambrills, MD
Posts: 8
Gender: Male
Vehicle: 2013 Ram 1500 Quad Cab 4x4
Trim Level: Big Horn
Color: Deep Cherry Red
Engine: 2013-20?? 220ci (3.6L) Pentastar 305hp 269lb/ft
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Default Engine Check Light Code PO720

Had the engine check light come on in my 1998 RAM 1500 SLT 2 wheel drive with automatic transmission. Code reader said it was a PO720, speed sensor. I reset the code but it came back the next day as soon as I drove it. Picked up a new speed sensor switch at Advance Auto for $21.95 today and replaced the one in the transmission. Not too bad a job, need a 1" deep socket or a 1" wrench, and I had the new switch in hand when I removed the old one so only lost a few drops of transmission fluid. Reset the code again and took it for a test drive and no check engine light so it looks like a new speed sensor switch took care of the problem.
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