1997 Plymouth Voyager P0304 OBD2 Diagnostic Code: Causes and Fixes

Model: 1997 Plymouth Voyager Fault Code: P0304 Posted: 2016-01-11 20:18

I own a 1997 Plymouth Voyager that is displaying the P0304 diagnostic trouble code. I'm wondering if cleaning the EGR valve will resolve this issue. The P0304 code indicates a misfire in cylinder 4, which could be caused by issues such as faulty spark plugs, worn ignition coils, or a clogged fuel injector. While EGR cleaning may help with some engine performance problems, it is not typically a direct solution for cylinder-specific misfires. I'm seeking advice on the proper diagnosis and repair steps to fix this code in my 1997 Plymouth Voyager.