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Message: <blockquote data-quote="highland554" data-source="post: 31233" data-attributes="member: 12297"><p>I have the same P04FB code with our 2025 Equinox with 18,500 miles on it.  The check engine light was on a couple of days, then went off, and then came back on.  They diagnosed it as the crank case pressure sensor and ordered the part.  The service advisor said the part was backordered from GM with zero availability.  The car has been at the dealership for a week now.  They couldn't give me an estimated date for when they would get the part in.</p></blockquote><p></p>