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Problems for specific Toyota Highlander years:

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Most reported 2008 Toyota Highlander problems

 

Verified for the Toyota Highlander

The Check Engine Light may illuminate because a component of the oxygen sensor stops working. As a result the engine computer is unable to determine the proper ratio of air to fuel for the engine. Replacing the failed oxygen sensor should correct this concern.

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Verified for the Toyota Highlander

When changing the air filter, it is easy to knock off a hose on the air filter housing, which is part of the emission control system. If the vehicle is driven with this hose disconnected, the Check Engine Light will illuminate.

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