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Since the problem was detected by the engine computer, it should be a control problem and not a lubrication fault, there should be nothing to worry about as the fault is not going to cause any damages.
As Toyota is providing the repairs under warranty, there should be no worries about possible damages. They would replace whatever parts that could possibly be linked to the problem.
When problems occurs at low mileages, the most likely cause would be assembling fault, could be a minor item such as an O ring was damaged. This would cause pressure leakages and cause the VVTi system to malfuction and show the error code.
Are you able to get the trouble code so that we can understand the fault better?
Saturday, July 25th, 2009 AT 12:06 PM