P050D and P0305 Codes

2K16SummitSS · 11-11-2016, 11:24 AM

2016 1SS - about 9,300 miles.

Started the car after work last night, pretty rough idle, even for an LT1 cold start. CEL comes on. Babied it to Autozone around the corner to see how serious it was. Came up with P050D - Cold Start Rough Idle, and P0305 - Cylinder 5 Misfire. Decided to take it to the dealer rather than attempt my 50 mile commute home. They gave me a loaner car, and said they would call me today once they've had time to look at it.

I will post up my results for those who may run into similar issues. My uneducated guess is that it's injector related.

Anyone else run into rough idle/misfire codes on these cars?

Techn9cian805 · 11-11-2016, 12:05 PM

Not yet. Look forward to some updates. Hopefully its nothing serious.

2K16SummitSS · 11-11-2016, 02:33 PM

Quote:

Originally Posted by Techn9cian805

Not yet. Look forward to some updates. Hopefully its nothing serious.

Hopefully, but if it is serious I'd rather have it happen under warranty. I'll be putting miles on this car very quickly, so it won't be long until I'm in front of the hood scratching my head on my own.

I called the service department to get an update, but no answer. I'll post up as soon as I hear something valuable.

R3DLT1 · 11-11-2016, 03:47 PM

Probably spark plug wire or spark plug n maybe a coil.

2K16SummitSS · 11-11-2016, 05:45 PM

They are leaning toward injector being the problem. They are supposed to run injector tests tonight or tomorrow, they had to update their equipment. I'm betting I don't hear anything else until Monday.

Sent from my SAMSUNG-SM-G890A using Tapatalk

2K16SummitSS · 11-15-2016, 12:54 PM

Just got the car back. They said even through all of their testing, they couldn't replicate the problem. They had my car for 6 days so that they could clear the codes and tell me to come back if it happens again...

In their defense, the car is running like a champ, so I'll chalk it up to a cold start anomaly for the time being. I'll update this thread if I have similar issues in the future.

R3DLT1 · 11-15-2016, 01:30 PM

Hate those kind of problems

2K16SummitSS · 11-15-2016, 01:52 PM

Me too, mystery problems suck. But, so does a loaner Malibu.

2K16SummitSS · 11-29-2016, 09:11 AM

Car is back in the shop, same codes have popped up, been reset, and popped up again. So this is definitely not a fluke. Through Turkey Day weekend I averaged 13 mpg's, which is a big departure from my normal 22-24... On cold startup it felt like a 454 with solid motor mounts, and I could feel the car trying to compensate for a likely misfire the entire weekend. Sunday evening, CEL turns off on its own, car runs like a dream, and I get 24 mpg on my ride to work Monday morning. I've decided to change the name of the car to Dr. Jekyll. I went ahead and took it in yesterday, and told them to keep it until they figure out the problem. They gave me a 2017 RS 2.0T for a loaner this time, in red. Pretty car, much better than the Malibu. I'll be in Vegas tomorrow through Saturday, so unless I hear something today, I probably won't have any updates until at least Monday. I still think it's something in the injector circuit.

2K16SummitSS · 12-06-2016, 08:22 AM

They replaced 2 injectors and parked the car outside last night, so that they could get a good cold start this morning and run diagnostics. Hopefully I'll get a call by the end of the day. Also, Vegas was fantastic.

2K16SummitSS · 12-07-2016, 11:35 AM

Injectors 4 & 5 replaced, car runs perfectly. I don't think it ever idled this good on a cold start...

EMTNLSS · 01-18-2019, 07:42 PM

Just had these codes pop for me today after a cold start. Didn't really notice it being any rougher than normal though and it drove fine. Have 33k miles on the car. I'll see if they come back and if they do i'll have to take it in. Wonder if it would covered under warranty though since I have headers and a tune.

2K16SummitSS · 01-21-2019, 01:57 PM

Quote:

Originally Posted by EMTNLSS

Just had these codes pop for me today after a cold start. Didn't really notice it being any rougher than normal though and it drove fine. Have 33k miles on the car. I'll see if they come back and if they do i'll have to take it in. Wonder if it would covered under warranty though since I have headers and a tune.

Mine did that twice before it started really stuttering. Depends on the dealer whether they cover it or not, but I've seen them try not to over cold air intakes and catch cans, around here at least.

EMTNLSS · 01-21-2019, 06:33 PM

Quote:

Originally Posted by 2K16SummitSS

Mine did that twice before it started really stuttering. Depends on the dealer whether they cover it or not, but I've seen them try not to over cold air intakes and catch cans, around here at least.

How long between when the check engine light came on again? I haven't had any issues since I cleared it the first time.

11-11-2016, 11:24 AM	#1
2K16SummitSS Resident Land Surveyor Drives: 2016 Camaro 1SS - Summit White M6 Join Date: Aug 2016 Location: Henryetta/Tulsa - Oklahoma Posts: 588	P050D and P0305 Codes 2016 1SS - about 9,300 miles. Started the car after work last night, pretty rough idle, even for an LT1 cold start. CEL comes on. Babied it to Autozone around the corner to see how serious it was. Came up with P050D - Cold Start Rough Idle, and P0305 - Cylinder 5 Misfire. Decided to take it to the dealer rather than attempt my 50 mile commute home. They gave me a loaner car, and said they would call me today once they've had time to look at it. I will post up my results for those who may run into similar issues. My uneducated guess is that it's injector related. Anyone else run into rough idle/misfire codes on these cars? __________________ 2016 Summit 1SS 49th Anniversary Commemorative Limited Plutonium Edition - M6, Solo Axleback & !RearCats, Ultra-Rare Cloth Seats, Forgestar CF5V 19x10-285/35 19x11-325/30 2001 NBM Trans Am WS6, Wifey's Grocery Getter - Torquer V2 cam, Racetronix Fuel Pump, Yank 3000 Stall, Transgo 1-2 kit, TSP LTs, Magnaflow, Strano Springs/Koni STR.T shocks, 17x9.5/17x11 TTIIs, Ed Wright tuned

11-11-2016, 12:05 PM	#2
Techn9cian805 The BEAST Drives: '16 2SS, '89 Wife Join Date: May 2015 Location: Central Coast, CA Posts: 2,034 View My Garage	Not yet. Look forward to some updates. Hopefully its nothing serious. __________________ Scarlet: 3/3/16: 2SS Red Hot, M6, Instagram: @luis_what_it_is

11-11-2016, 03:47 PM	#4
R3DLT1 Toyota Tech Drives: 2SS A8 Join Date: Jul 2014 Location: Bartlesville, OK Posts: 465	Probably spark plug wire or spark plug n maybe a coil. __________________ 2016 Camaro SS A8 Roto-Fab CAI: Drag set up 11.9 @116 Sold 95 Camaro Z28 Cam:Bolt ons: 12.3 @114 Sold 2013 Chevy Crzue LTX

11-11-2016, 05:45 PM	#5
2K16SummitSS Resident Land Surveyor Drives: 2016 Camaro 1SS - Summit White M6 Join Date: Aug 2016 Location: Henryetta/Tulsa - Oklahoma Posts: 588	They are leaning toward injector being the problem. They are supposed to run injector tests tonight or tomorrow, they had to update their equipment. I'm betting I don't hear anything else until Monday. Sent from my SAMSUNG-SM-G890A using Tapatalk __________________ 2016 Summit 1SS 49th Anniversary Commemorative Limited Plutonium Edition - M6, Solo Axleback & !RearCats, Ultra-Rare Cloth Seats, Forgestar CF5V 19x10-285/35 19x11-325/30 2001 NBM Trans Am WS6, Wifey's Grocery Getter - Torquer V2 cam, Racetronix Fuel Pump, Yank 3000 Stall, Transgo 1-2 kit, TSP LTs, Magnaflow, Strano Springs/Koni STR.T shocks, 17x9.5/17x11 TTIIs, Ed Wright tuned

11-15-2016, 12:54 PM	#6
2K16SummitSS Resident Land Surveyor Drives: 2016 Camaro 1SS - Summit White M6 Join Date: Aug 2016 Location: Henryetta/Tulsa - Oklahoma Posts: 588	Just got the car back. They said even through all of their testing, they couldn't replicate the problem. They had my car for 6 days so that they could clear the codes and tell me to come back if it happens again... In their defense, the car is running like a champ, so I'll chalk it up to a cold start anomaly for the time being. I'll update this thread if I have similar issues in the future. __________________ 2016 Summit 1SS 49th Anniversary Commemorative Limited Plutonium Edition - M6, Solo Axleback & !RearCats, Ultra-Rare Cloth Seats, Forgestar CF5V 19x10-285/35 19x11-325/30 2001 NBM Trans Am WS6, Wifey's Grocery Getter - Torquer V2 cam, Racetronix Fuel Pump, Yank 3000 Stall, Transgo 1-2 kit, TSP LTs, Magnaflow, Strano Springs/Koni STR.T shocks, 17x9.5/17x11 TTIIs, Ed Wright tuned

11-15-2016, 01:30 PM	#7
R3DLT1 Toyota Tech Drives: 2SS A8 Join Date: Jul 2014 Location: Bartlesville, OK Posts: 465	Hate those kind of problems __________________ 2016 Camaro SS A8 Roto-Fab CAI: Drag set up 11.9 @116 Sold 95 Camaro Z28 Cam:Bolt ons: 12.3 @114 Sold 2013 Chevy Crzue LTX

11-15-2016, 01:52 PM	#8
2K16SummitSS Resident Land Surveyor Drives: 2016 Camaro 1SS - Summit White M6 Join Date: Aug 2016 Location: Henryetta/Tulsa - Oklahoma Posts: 588	Me too, mystery problems suck. But, so does a loaner Malibu. __________________ 2016 Summit 1SS 49th Anniversary Commemorative Limited Plutonium Edition - M6, Solo Axleback & !RearCats, Ultra-Rare Cloth Seats, Forgestar CF5V 19x10-285/35 19x11-325/30 2001 NBM Trans Am WS6, Wifey's Grocery Getter - Torquer V2 cam, Racetronix Fuel Pump, Yank 3000 Stall, Transgo 1-2 kit, TSP LTs, Magnaflow, Strano Springs/Koni STR.T shocks, 17x9.5/17x11 TTIIs, Ed Wright tuned

11-29-2016, 09:11 AM	#9
2K16SummitSS Resident Land Surveyor Drives: 2016 Camaro 1SS - Summit White M6 Join Date: Aug 2016 Location: Henryetta/Tulsa - Oklahoma Posts: 588	Car is back in the shop, same codes have popped up, been reset, and popped up again. So this is definitely not a fluke. Through Turkey Day weekend I averaged 13 mpg's, which is a big departure from my normal 22-24... On cold startup it felt like a 454 with solid motor mounts, and I could feel the car trying to compensate for a likely misfire the entire weekend. Sunday evening, CEL turns off on its own, car runs like a dream, and I get 24 mpg on my ride to work Monday morning. I've decided to change the name of the car to Dr. Jekyll. I went ahead and took it in yesterday, and told them to keep it until they figure out the problem. They gave me a 2017 RS 2.0T for a loaner this time, in red. Pretty car, much better than the Malibu. I'll be in Vegas tomorrow through Saturday, so unless I hear something today, I probably won't have any updates until at least Monday. I still think it's something in the injector circuit. __________________ 2016 Summit 1SS 49th Anniversary Commemorative Limited Plutonium Edition - M6, Solo Axleback & !RearCats, Ultra-Rare Cloth Seats, Forgestar CF5V 19x10-285/35 19x11-325/30 2001 NBM Trans Am WS6, Wifey's Grocery Getter - Torquer V2 cam, Racetronix Fuel Pump, Yank 3000 Stall, Transgo 1-2 kit, TSP LTs, Magnaflow, Strano Springs/Koni STR.T shocks, 17x9.5/17x11 TTIIs, Ed Wright tuned

12-06-2016, 08:22 AM	#10
2K16SummitSS Resident Land Surveyor Drives: 2016 Camaro 1SS - Summit White M6 Join Date: Aug 2016 Location: Henryetta/Tulsa - Oklahoma Posts: 588	They replaced 2 injectors and parked the car outside last night, so that they could get a good cold start this morning and run diagnostics. Hopefully I'll get a call by the end of the day. Also, Vegas was fantastic. __________________ 2016 Summit 1SS 49th Anniversary Commemorative Limited Plutonium Edition - M6, Solo Axleback & !RearCats, Ultra-Rare Cloth Seats, Forgestar CF5V 19x10-285/35 19x11-325/30 2001 NBM Trans Am WS6, Wifey's Grocery Getter - Torquer V2 cam, Racetronix Fuel Pump, Yank 3000 Stall, Transgo 1-2 kit, TSP LTs, Magnaflow, Strano Springs/Koni STR.T shocks, 17x9.5/17x11 TTIIs, Ed Wright tuned

12-07-2016, 11:35 AM	#11
2K16SummitSS Resident Land Surveyor Drives: 2016 Camaro 1SS - Summit White M6 Join Date: Aug 2016 Location: Henryetta/Tulsa - Oklahoma Posts: 588	Injectors 4 & 5 replaced, car runs perfectly. I don't think it ever idled this good on a cold start... __________________ 2016 Summit 1SS 49th Anniversary Commemorative Limited Plutonium Edition - M6, Solo Axleback & !RearCats, Ultra-Rare Cloth Seats, Forgestar CF5V 19x10-285/35 19x11-325/30 2001 NBM Trans Am WS6, Wifey's Grocery Getter - Torquer V2 cam, Racetronix Fuel Pump, Yank 3000 Stall, Transgo 1-2 kit, TSP LTs, Magnaflow, Strano Springs/Koni STR.T shocks, 17x9.5/17x11 TTIIs, Ed Wright tuned

01-18-2019, 07:42 PM	#12
EMTNLSS Drives: 2016 Hyper Blue 2SS Join Date: Feb 2016 Location: Layton, UT Posts: 498	Just had these codes pop for me today after a cold start. Didn't really notice it being any rougher than normal though and it drove fine. Have 33k miles on the car. I'll see if they come back and if they do i'll have to take it in. Wonder if it would covered under warranty though since I have headers and a tune. __________________ 2SS Hyper Blue Metallic \| A8 \| Jet Black Interior \| NPP Exhaust Current Mods: Catch Can \| aFe Lowering Springs \| GM 2nd Gen Splitter \| Hotchkis Sway Bars \| MRR FS02 Wheels \| Flowmaster Exhaust \| Dark Tail Lights \| Diode Dynamics Sidemarkers \| Roto Fab \| Solar TB \| PRAY Ported IM \| BMR \| TSP 1 7/8" Catted Headers \| PRAY Tune Upcoming Mods:

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