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P0453 diagnosis
My '99 Carrera recently threw a CEL with error code P0453, Evaporative Emission System Pressure Sensor/Switch High.
I replaced the gas cap, and that had no effect. I don't hear any noises like it's a venting issue as described in the 101 book.
How can I troubleshoot this?
Naturally I am planning to leave in one week for the PCA Escape- a 3k mile road trip- so I'd like to get this resolved before beginning that drive.
Thanks!
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