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Codes PO300,301, 302, 303, 304, PO128

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Old 03-17-2023
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Codes PO300,301, 302, 303, 304, PO128

2010 Civic LXS
140 K Miles

Son was driving down the free way and when accelerated vehicle lost power and felt like it was bucking and engine light started flashing. Pulled to the side of the road and shut car off and waited for a while then restarted and engine ran normal to work and home. Checked the codes and got PO300, 301, 302, 304, and PO128. No more issues reported on his way to work this AM. Car had plugs replaced within the last year or so-NGK's. Has any one experienced this and if so what has been the issue? Plan to take to my mechanic to check plugs etc. but I don't believe it is related to the ignition coils for all 4 cylinders (original coils). EGR Valve?
Old 03-17-2023
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Re: Codes PO300,301, 302, 303, 304, PO128

P0128 is cooling system malfunction. Check coolant level is one of the first recommended steps. Coolant temp gauge working properly?
Old 03-17-2023
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Re: Codes PO300,301, 302, 303, 304, PO128

Coolant low in overflow tank and a little low in radiator-topped both of them off. Thanks.
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