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Old 05-03-2012, 11:23 AM   #1
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Question "Gear Ratio Error" P2550 ???

Heading to work this morning I lost power in heavy multi-lane traffic at about 70mph and the CEL came on. I managed to move over and get off the road. I had lost power to the wheels.

It is a 2012 automatic. The dash still showed it in drive so I hadn't bumped the shifter. I placed it in Park and the engine appeared to be running normally (at least at idle). I turned it off and re-started the engine. The CEL was still on but the Jeep accelerated normally after the restart so I took it to the dealer.

They reported it as a code P2550 and on the ticket they described as "Gear Ratio Error". The service manager said it was a "computer glitch". That doesn't sound promising. A search doesn't turn up much information other than some low input signal B to transmission.

It's driven fine after that but it was driving fine until it threw the code. This caused quite a dangerous situation. If the traffic had been heavier I could have ended up stopping in the middle of high-speed multi-lane traffic.

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Old 05-03-2012, 11:27 AM   #2

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Your safe

Never heard of such fault ?
2007 Rubicon/Rock Krawler triple rate 2.5" coils/RK rear TB w/ a teraflex raised bracket/Rancho 9000 31/32XL shocks/Synergy flipped draglink,ball joints,tie rod /Hankook MT 315-75-16 on Level 8 ZX's/Rancho geo brackets/Ruff stuff uppers/Fox ATS stabilizer/Adams front DS/Artec front armor w/ Currie upper bushings/Rancho cat back exhaust.

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cel , p2550 , transmission

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