1999 Lexus ES300 Repair and Maintenance

A guide to problems, costs, maintenance and repair for your 1999 Lexus ES300

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.

On higher mileage vehicles, an engine misfire may develop and/or the Check Engine Light may illuminate due to a failed ignition coil. It is not uncommon to replace all the coils when the first one fails in order to prevent return trips to the repair shop.

Intermittent failure of a purge control valve in the evaporative emission system can cause the Check Engine Light to illuminate. A failed valve should be replaced to correct this problem.

 

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I already had front brakes replaced. Light hasn't been on then suddenly it came on

I've changed all the coils,map sensor and air filter hoses light goes off every time but after a few miles comes back on again.

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