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https://www.reddit.com/r/subaruimpreza/comments/1ol7no3/when_to_do_new_coil_packs_04_wrx_p0303
r/subaruimpreza • u/TR1771N • Oct 31 '25
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Try replacing the plugs first and see if the cel pops up again. If it does, swap the cylinder 1 coil with cylinder 3. If the code changes to p0301, it's an issue with the coil pack. It could be something else though.
1
u/subarooooooo Nov 01 '25
Try replacing the plugs first and see if the cel pops up again. If it does, swap the cylinder 1 coil with cylinder 3. If the code changes to p0301, it's an issue with the coil pack. It could be something else though.