Error code P0303 misfire in cylinder 3
The wagon performed well on track, with stable temperature and no obvious problems. But after sitting for an hour or so before leaving for home, when I started up again the check engine light was on.
Idle was a bit lumpy but otherwise no worries. The light was still on when I got home and I have since used a choice reader to check the ecu, and it came up with error code P0303, which seems to mean misfire in cylinder 3.
I cleared the code and started the car, and the light didn't come back on. Haven't driven anywhere in it since, but do you guys think I should forget about it unless the light comes back, or do some investigations?
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JDM twinscroll Legacy wagon [previously blob WRX/PPP wagon, killed @ Silverstone Feb 2019]
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