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2014 Regal GS Code P0303

Old 01-05-2019, 07:16 PM
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Join Date: Jan 2019
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Default 2014 Regal GS Code P0303

I have a 2014 Regal GS AWD Turbo and out of the blue today when I gave it gas it hesitates really bad. Check engine light flashes and the traction control light will then come on and then the check engine light goes to solid. (no longer flashes) The code was P0303 is what pulled Cylinder 3 Changed spark plugs and its still doing this. I have purchase coil pack and waiting for this to come in tomorrow. Has anyone had this issue or have any ideas? Has about 8-K miles on it. I am hoping the coil pack will be the fix but I was hoping the spark plugs were the fix too. Thanks for any advise!
Old 01-10-2019, 05:25 AM
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Join Date: Oct 2016
Location: Minot, ME
Posts: 328

Could be fuel injector also. I'd try pulling off plug wire and see if car runs the same or worse. Would think though a continous skipping/misfire would be present and noticeable on motor. Sounds more like the MAF or TPS, interrelated with cylinder 3? Meaning fuel enrichment, timing advance with depressing gas pedal?

Last edited by Rich B.; 01-10-2019 at 05:54 AM.
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