You have that backwards. High rpm means the transmission IS kicking down. In fact, it's going into second gear. That's "limp-in" or the default mode when a problem is detected by the transmission computer. It will stay in second gear until the ignition switch is cycled off and the engine is restarted.
Code 700 means a fault code is set in memory in the transmission computer. That's why the transmission is stuck in second gear. Your mechanic will have to connect a hand-held computer to access the transmission computer and read the diagnostic fault code(s).
Caradiodoc
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Monday, January 18th, 2010 AT 5:58 AM