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Trans Over Temp & O/D lights come on when vehicle is running.

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Typically an O/D light that stays on or flashes without being pressed indicates failure codes being present for your transmission. Meaning something is occurring that is not right and you should have a diagnostic test performed. This light indicates a transmission issue - and there is stored information in the engine's processor that will help diagnose the problem. It will need to be tested to find out what failure codes are in memory. This will give a clue to a technician on what functions to look into.

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Posted on Mar 21, 2011


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