I got the engine code P1645 on my 1997 Cadillac DeVille 4.6L, what is the meaning?
Hi there,
This code indicates an issue with the Evaporative emission vent solenoid. Here is a list of possible causes.
P1645 CADILLAC - Evaporative Emission Purge Solenoid Output Circuit Read more: https://www.autocodes.com/p1645_cadillac.html
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