P0201 Diagnosis and troubleshooting - Camaro5 Chevy Camaro Forum / Camaro ZL1, SS and V6 Forums

SS_CTS-V · 03-13-2020, 07:17 AM

Out of the blue yesterday when starting my car in the morning, it immediately went into limp mode, had an audible/palpable misfire, the "service stabilitrack" message came up, and I got code P0201 "cylinder 1 injector malfunction". I haven't driven the car. I double checked the connection to the injector, I can feel the injector pulse at idle with my finger, but haven't gone past this point. Car is tuned by RDP, I flashed to stock tune, clear DTCs and the issue persisted. Flash back to RDP tune, clear DTC and it's still there.

Any ideas or help on how to diagnose or repair the issue?

2015 Camaro SS - Longtube headers, RDP tune, NOWEEDS diverters. No other mods.

Mouse330 · 03-13-2020, 02:11 PM

p0201 means there is an short to V, Short to ground or open/high resistance
in the control circuit.
the injector should be 11-14 ohms check that first.
u said it was misfiring right?

SS_CTS-V · 03-14-2020, 03:32 PM

Steve, checked the wires and plugs, all brand new and no evidence of issues.

Mouse, the injector ohm’d out at less than 1 ohm, all other injectors are in good range. Going to replace the one injector and will report back.

Pro-tuned · 03-14-2020, 10:52 PM

I would start off by load testing the battery and checking grounds.

SS_CTS-V · 03-15-2020, 12:52 PM

Replaced the injector and she runs like a champ. I did check ground connections and all other relevant wiring wire harnessing I could get to. No evidence of damage, spilts, shorts or anything other than the one injector plug that shows some sign of scorching as you can see in the picture. I took the connector apart and made sure there was internal damage. I guess the injector just died, seems kinda weird at only 55k miles.

Mouse330 · 03-15-2020, 03:15 PM

Excellent
Glad to here

SS_CTS-V · 03-21-2020, 10:31 AM

Been a few days now and still running great!

03-13-2020, 07:17 AM	#1
SS_CTS-V Drives: 2015 SS, 2006 CTS-V (wrecked...) Join Date: Jul 2017 Location: Tampa Posts: 145	P0201 Diagnosis and troubleshooting Out of the blue yesterday when starting my car in the morning, it immediately went into limp mode, had an audible/palpable misfire, the "service stabilitrack" message came up, and I got code P0201 "cylinder 1 injector malfunction". I haven't driven the car. I double checked the connection to the injector, I can feel the injector pulse at idle with my finger, but haven't gone past this point. Car is tuned by RDP, I flashed to stock tune, clear DTCs and the issue persisted. Flash back to RDP tune, clear DTC and it's still there. Any ideas or help on how to diagnose or repair the issue? 2015 Camaro SS - Longtube headers, RDP tune, NOWEEDS diverters. No other mods.

03-14-2020, 10:52 PM	#4
Pro-tuned Angewendet Ingenieur Drives: 14 Camaro ZL1 Join Date: Apr 2015 Location: USA Posts: 401	I would start off by load testing the battery and checking grounds. __________________ ———— LQ9, Iron Block, Forged internals, 408CI, Jannetty custom cam, TS short block, Whipple, Hardened Jackshaft, PRC 260, 2X3 Dynatech Full Competition, HF Cats, CAI, NW 103, Chee, ID 1300, COPO Breather, MSD, Fore Dual Pump, ultratorque, E85, dual Meth, True Trac, 3:45, 1500hp axle-shafts, DSS CF, BMR, custom Pearl/Candy paint by Jaidah.

03-15-2020, 12:52 PM	#5
SS_CTS-V Drives: 2015 SS, 2006 CTS-V (wrecked...) Join Date: Jul 2017 Location: Tampa Posts: 145	Replaced the injector and she runs like a champ. I did check ground connections and all other relevant wiring wire harnessing I could get to. No evidence of damage, spilts, shorts or anything other than the one injector plug that shows some sign of scorching as you can see in the picture. I took the connector apart and made sure there was internal damage. I guess the injector just died, seems kinda weird at only 55k miles. Attached Images

03-13-2020, 02:11 PM	#2
Mouse330 Drives: 2011 2SS, 2006 GMC Sierra Join Date: Jul 2019 Location: MA Posts: 240	p0201 means there is an short to V, Short to ground or open/high resistance in the control circuit. the injector should be 11-14 ohms check that first. u said it was misfiring right?

03-14-2020, 03:32 PM	#3
SS_CTS-V Drives: 2015 SS, 2006 CTS-V (wrecked...) Join Date: Jul 2017 Location: Tampa Posts: 145	Steve, checked the wires and plugs, all brand new and no evidence of issues. Mouse, the injector ohm’d out at less than 1 ohm, all other injectors are in good range. Going to replace the one injector and will report back.

03-15-2020, 03:15 PM	#6
Mouse330 Drives: 2011 2SS, 2006 GMC Sierra Join Date: Jul 2019 Location: MA Posts: 240	Excellent Glad to here

03-21-2020, 10:31 AM	#7
SS_CTS-V Drives: 2015 SS, 2006 CTS-V (wrecked...) Join Date: Jul 2017 Location: Tampa Posts: 145	Been a few days now and still running great!