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Some vehicles may experience an engine that runs rough and the check engine light on with dtcs p0201 and p0204 or p0202 and p0203.Note:Engine misfire related dtcs (p0301, p0302, p0303, p0304) are usually stored at the same time.P0201:00: Fuel injector circuit/open cylinder no.1p0202:00: Fuel injector circuit/open cylinder no.2p0203:00: Fuel injector circuit/open cylinder no.3p0204:00: Fuel injector circuit/open cylinder no.4this concern may be caused by an internal failure of the pcm (denso produced only). To correct the concern, the pcm internal failure has been eliminated.