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I have a 2003 Highlander. Whenever I get the oil changed, the check engine light comes on within a couple of days. I finally figured out that there is a hose under the air filter case that gets disconnected when the filter is checked. Just reattach the hose and the light will reset after a few restarts of the engine.

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โˆ™ 2008-11-26 16:59:04
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Q: What causes Toyota Highlander check engine light?
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