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Shpp said 2 code p301 and p0401
Vehicle: 1999 saturn 4 cylinder

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P0301 Misfire number 1 cylinder

P0401 Exhaust gas recirculation flow insufficient

This code is 2 separate condition a misfire are mostly set due to a secondary ignition malfunction, sparkplug wire shorting to ground or the ignition module not able to produce sufficient secondary voltage to it cylinder, As for P0401 this is the EGR system  a plug EGR system or failed EGR .

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