Dealers tool can't talk to my Car's ECM... - Camaro5 Chevy Camaro Forum / Camaro ZL1, SS and V6 Forums

LCPLPunk · 09-12-2017, 11:02 PM

Hey everybody, I need help with my 2010 Camaro SS.

So I had a P0205 (open circuit injector 5) and I couldn't figure out what was causing it. I replaced the injector, checked the wiring, and replaced the PCM but sent it back after the problem remained. After much frustration I decided to take the car to a dealer.

I got a call after a week and a half of them having the car and they said that they can see the code, but their computer can't talk to the car's ECM. I had an aftermarket tune on the car, but I reverted the car back to stock before I took it to the dealership. I have some modifications, but just bolt-ons, i.e. intake, headers, etc.

Any idea what the heck is going on?

SynergyGreenSS · 09-12-2017, 11:17 PM

A situation happened to me that sounds similar to this. Has your car been tuned? It is very possible the tuner locked your ecm so they're the only one who can access it. Although if that is the case, your dealer should have a tool that can flash it back to stock even if it is locked. Absolutely worst case scenario, you replace your ECM like I had to do. Replacements aren't as expensive as you'd expect.

LCPLPunk · 09-12-2017, 11:18 PM

My car was tuned, but I reverted it back to stock before I took it to the dealership.

Unfortunately, I didn't even bring the car in for this, which means more money! :(

09-12-2017, 11:02 PM	#1
LCPLPunk USA-1 Drives: 2010 Camaro SS L99 Join Date: Jul 2016 Location: Near DC Posts: 1,893 View My Garage	Dealers tool can't talk to my Car's ECM... Hey everybody, I need help with my 2010 Camaro SS. So I had a P0205 (open circuit injector 5) and I couldn't figure out what was causing it. I replaced the injector, checked the wiring, and replaced the PCM but sent it back after the problem remained. After much frustration I decided to take the car to a dealer. I got a call after a week and a half of them having the car and they said that they can see the code, but their computer can't talk to the car's ECM. I had an aftermarket tune on the car, but I reverted the car back to stock before I took it to the dealership. I have some modifications, but just bolt-ons, i.e. intake, headers, etc. Any idea what the heck is going on? __________________ "A Camaro in the garage is safe, but that's not what Camaros are built for..." R2C CAI / Apex Scoop / VMAX Ported TB / Speed Engineering LTHs / X-pipe / GPI port/rod-mod intake manifold / Circle D 3200 278mm Converter / 3.91 gears / DynoSteve tuned / 1LE Shocks/Struts/Toe Links / ZL1 Rear Sway Bar / Z/28 Trailing arms / Prothane Radius Arm & Subframe Bushings / BMR UCA Bracket, Steering rack bushing / B&M Tranny Cooler / RX Catch Can / Jannetty Tranny Dipstick / 2012+ Heater Hose / 2013+ Rearview Mirror / Fuel rail flip / Drake shifter / Oil Cooler Delete

09-12-2017, 11:17 PM	#2
SynergyGreenSS Drives: 2011 2SS Join Date: Mar 2015 Location: Arlington, Texas Posts: 1,333	A situation happened to me that sounds similar to this. Has your car been tuned? It is very possible the tuner locked your ecm so they're the only one who can access it. Although if that is the case, your dealer should have a tool that can flash it back to stock even if it is locked. Absolutely worst case scenario, you replace your ECM like I had to do. Replacements aren't as expensive as you'd expect. __________________ 2011 SS L99 LSA Supercharger, BTR Stage 3 PDS Cam, Yank 3200SS, Weapon X Stage 2 intake, LSA Heads, Flex Fuel, Ported throttle body, Speed Engineering Headers, NOWEEDS, ZL1 fuel pump, DSX AUX Pump, ID-1050X injectors, 3” pipe to NPP mufflers, 3.91 gears

09-12-2017, 11:18 PM	#3
LCPLPunk USA-1 Drives: 2010 Camaro SS L99 Join Date: Jul 2016 Location: Near DC Posts: 1,893 View My Garage	My car was tuned, but I reverted it back to stock before I took it to the dealership. Unfortunately, I didn't even bring the car in for this, which means more money! :( __________________ "A Camaro in the garage is safe, but that's not what Camaros are built for..." R2C CAI / Apex Scoop / VMAX Ported TB / Speed Engineering LTHs / X-pipe / GPI port/rod-mod intake manifold / Circle D 3200 278mm Converter / 3.91 gears / DynoSteve tuned / 1LE Shocks/Struts/Toe Links / ZL1 Rear Sway Bar / Z/28 Trailing arms / Prothane Radius Arm & Subframe Bushings / BMR UCA Bracket, Steering rack bushing / B&M Tranny Cooler / RX Catch Can / Jannetty Tranny Dipstick / 2012+ Heater Hose / 2013+ Rearview Mirror / Fuel rail flip / Drake shifter / Oil Cooler Delete