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To reset the gas cap error code on a 2009 Jeep Wrangler, first, ensure that the gas cap is properly tightened and in good condition. Then, disconnect the negative terminal of the battery for about 15 minutes to clear the error code from the vehicle’s computer. After reconnecting the battery, the check engine light should turn off if the issue was solely due to the gas cap. If the light remains on, further diagnostics may be needed.

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9mo ago

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