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2006 Chevrolet Impala SS Question: engine light on code P442 and P140

 

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tony2A, 5.3L V8, Houston, TX, March 26, 2013, 12:27
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I did replace the gas cap with a new one from auto parts store.

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  • Answer #1

    Greg's Orange Auto (12184 Answers) , Orange, CA - (714) 361-9386
    globalhelper March 26, 2013, 12:42
     Master

    bank 1 sensor 2 has issues with reading exh gases. after market gas cap are not always reliable. po442 could be cap issues or evap leaks in other areas.

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    pushrod, March 26, 2013, 15:06
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     Master

    Greg is right, also the last fuel cap i got was from a GM dealer for less than aftermarket, with retainer strap!

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