Mazda CX-9 This larger SUV adds a V6 option, as well as more cargo room, to the CX-7 option.

Troubleshooting Check Fuel Cap Warning Light

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Old 02-28-2017, 11:44 AM
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Join Date: May 2015
Location: arizona
Posts: 2
Default Troubleshooting Check Fuel Cap Warning Light

2010 cx-9 here. The Check Fuel Cap Warning Light comes on and stays on. I've tried tightening the cap several times and the problem continues (for four days now). There are no ODB2 codes, just the warning light. Can anyone suggest troubleshooting steps to fixing the problem (from lowest-cost/easiest to more difficult/expensive)? I'm guessing changing the fuel cap seal (or entire cap if seal-only not available) would be a starting point but I'm open to the expertise on this forum.
 
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