Kreen and check engine light.

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Same code. Got down to 1/4 tank added Cataclean per directions. Drove another 100 miles or so. Light stayed on. Disconnected the battery. Light went out. Has not returned in the last 75 miles or so. I shall refrain from Kreen in the fuel. Ill stick with PEA bases chemicals in the fuel.
 
Originally Posted by Thunderball
Same code. Got down to 1/4 tank added Cataclean per directions. Drove another 100 miles or so. Light stayed on. Disconnected the battery. Light went out. Has not returned in the last 75 miles or so. I shall refrain from Kreen in the fuel. Ill stick with PEA bases chemicals in the fuel.

Odds are your car hasn't gone through the fuel system EVAP checks yet. Fill it up and run it for about 200 miles or so and report back. Nearly full and nearly empty tanks can effect the self checking of the system. In other words the system checks itself from about 1/4-3/4 of a tank of gas, above or below it won't run the tests. Cold weather may also impact the EVAP system checks as well. Give it a little time.

Or you might get lucky and it was from the gas cap.
 
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