Error code p0301 and sometimes p0300 - Camaro5 Chevy Camaro Forum / Camaro ZL1, SS and V6 Forums

JRowe500 · 11-29-2023, 10:58 AM

I have a 2014 Z28 with only 3,000 miles on it. About 6 months ago it gave me and error code of P0306. I replaced the sparkplug coil and that seemed to clear the issue. Now I am getting the same code for cylinder 1 (P0301). I did the same thing and the code will not go away, now sometimes code P0300 is coming up. The general engine misfire code. Anything else I should check?

TIA

Infidel67 · 11-29-2023, 11:00 AM

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gtstorey · 11-29-2023, 11:23 AM

Either start moving parts (injectors, coils, plugs, etc) around and see if it follows. Or get a scanner that is recording/showing live data and dig into what is going on to cause a general misfire.

With something as few miles as that has, you might have fuel issues or chewed on wires, depending on where it is stored.

All of this is assuming that I, a lowly SS owner can comment on a Z28. Still trying to figure that part out.

SlowLS1 · 11-29-2023, 12:24 PM

I agree with above, likely wiring issue but you are going to need a good scan tool with logging capabilities to diagnose without guessing.

Do you know anyone with HP Tuners, would be a good start.

JRowe500 · 11-29-2023, 01:57 PM

Quote:

Originally Posted by SlowLS1

I agree with above, likely wiring issue but you are going to need a good scan tool with logging capabilities to diagnose without guessing.

Do you know anyone with HP Tuners, would be a good start.

I don't here in Central Florida.

JRowe500 · 11-29-2023, 02:03 PM

Quote:

Originally Posted by gtstorey

Either start moving parts (injectors, coils, plugs, etc) around and see if it follows. Or get a scanner that is recording/showing live data and dig into what is going on to cause a general misfire.

With something as few miles as that has, you might have fuel issues or chewed on wires, depending on where it is stored.

All of this is assuming that I, a lowly SS owner can comment on a Z28. Still trying to figure that part out.

I have a tool that gives me codes. What kind of scanner could I get?

gtstorey · 11-29-2023, 03:18 PM

HPT Tuners would help, but I'm not aware of anything else below about $1000 that will do what you need. Something that will display misfire counters real time.

11-29-2023, 10:58 AM	#1
JRowe500 Drives: Camaro z28 Join Date: Mar 2021 Location: Clermont Posts: 74	Error code p0301 and sometimes p0300 I have a 2014 Z28 with only 3,000 miles on it. About 6 months ago it gave me and error code of P0306. I replaced the sparkplug coil and that seemed to clear the issue. Now I am getting the same code for cylinder 1 (P0301). I did the same thing and the code will not go away, now sometimes code P0300 is coming up. The general engine misfire code. Anything else I should check? TIA

11-29-2023, 11:00 AM	#2
Infidel67 Life's just a Ride Drives: 2011 Synergy Camaro 2SS/RS LS3 Join Date: Oct 2013 Location: Columbia SC Posts: 854 View My Garage	... __________________ 2011 Synergy Camaro 2SS/RS Ls3, LTH, CAI Custom Intake, TSP stage-3 111-LSA Cam, RWHP 503/508

11-29-2023, 12:24 PM	#4
SlowLS1 Drives: 2010 Camaro SS , 2011 Colorado LS1 Join Date: Jan 2022 Location: Greenville, SC Posts: 860	I agree with above, likely wiring issue but you are going to need a good scan tool with logging capabilities to diagnose without guessing. Do you know anyone with HP Tuners, would be a good start. __________________

11-29-2023, 11:23 AM	#3
gtstorey Drives: 2010 Camaro SS2,L99, LSA SC Join Date: Aug 2017 Location: Huntsville, AL Posts: 2,179	Either start moving parts (injectors, coils, plugs, etc) around and see if it follows. Or get a scanner that is recording/showing live data and dig into what is going on to cause a general misfire. With something as few miles as that has, you might have fuel issues or chewed on wires, depending on where it is stored. All of this is assuming that I, a lowly SS owner can comment on a Z28. Still trying to figure that part out.

11-29-2023, 03:18 PM	#7
gtstorey Drives: 2010 Camaro SS2,L99, LSA SC Join Date: Aug 2017 Location: Huntsville, AL Posts: 2,179	HPT Tuners would help, but I'm not aware of anything else below about $1000 that will do what you need. Something that will display misfire counters real time.