Hi-I've been working on a 99 Subaru Outback. It shows P0303 and P0304 on the code reader. I changed the plugs and wires. The changed the ignition coil, which I thought would be a fix, but the light came back on after a couple weeks and it is the same codes. Any ideas? Thanks. Steve
99 Outback misfire P0303, P0304
Oct 24, 2006
1 Replies
these particular codes are cylinder misfire codes which could be caused by any number of things, not just the ignition system. faulty fuel injectors, o2 sensors, cat converters,valves,tcm's... i don't have much subaru experience, so i really couldn't tell you what most commonly goes wrong with these cars, but i hope i've given you an idea of some of the things that can set these codes
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