GL Class (X164) 2007-2012: GL320CDI, GL420CDI, GL450, GL550

P0456

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Old 09-02-2022, 10:41 PM
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2012 gl450
P0456

Hi everyone this code popped up when my check engine light came on. I checked my gas cap and it was loose so I tightened it and I have been driving now for a couple days will that light eventually go away? I have a 2012 gl450
Yesterday I filled it up but the check engine light is still on.
Old 09-03-2022, 05:37 AM
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2007 GL450
Give it a drive cycle or two.

Most of us get too impatient and clear the codes manually.
Old 09-03-2022, 09:26 AM
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Thanks

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