Check Engine Light - Code 0456

SeCX-9

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2016 Mazda CX-9 Signature
Anyone having any Check Engine lights with a scan code of 0456? I have a new 09 -CX7

According to the OBD-II codes this is typically a leak with the gas cap. I cleared the code last Saturday with my ScanGauge II and see that it has come back again 5 days later. This is the typically an evaporation system small leak. The gas cap is tight and no gas has been added to the time since I tightened it last Saturday.

Just wondering if this is just a fluke or if anything systemic with the car.
 
could be a faulty gas cap. this was pretty common with the early cx7s, so maybe they have come back up.

also could be the purge valve, very common issue that is a quick fix at the dealer.
 
The redeigned cap has a blue insert I believe. Dealer should replace it free.

Just checked the gas cap now and the plastic screw-in piece is blue tinted plastic. Definately not the same as the brand new gas cap on my CX-9 I just got last week (plastic attach cable broke).

Hopefully it's something minor either way.
 
Just picked up the CX-7 with the CEL 0456. Apparently, the evaporation system leak detection pump (LDP), itself, had a small leak of it's own! They replaced it.

All is good....for now...
 
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