CELs, at least in ICE vehicles, operate along the following lines:The CEL code is important, but also you may just want to shut the car off when you see the code, wait 5 seconds, plug the car back in for 10 seconds, then unplug and start back up. When the CEL issue happened to me twice in the second month I had my Volt that is how I worked around it. Not sure why, but plugging it back in and then out re-set the CEL so it stayed off, though it did take two tries the first time. It was a tip I got here on GM-Volt dot com from other Volt owners back in 2013 so it worked for the Gen I, not sure if it will address the issues you are having with a Gen II but it is worth trying before you take it to a dealer. Free and easy is a good place to start when you are addressing a glitch.
The CEL happened twice and then went away, never to return.
CELs, at least in ICE vehicles, operate along the following lines:
- The ECU monitors a number of systems as part of the normal operation of the vehicle.
- When the ECU determines a monitored system falls outside of spec it sets a pending code but does not illuminate the CEL.
- If the monitored system remains out of spec for a number of drive cycles then the CEL will be illuminated.
- If, after the CEL is illuminated, the monitored system falls back within spec the computer will, after a number of drive cycles, extinguish the CEL.
- Even though the CEL has been extinguished the computer retains the code for a number of drive cycles. Typically this is 40, 80, or 120 drive cycles.
- I can't define a drive cycle as it appears to be manufacturer specific. However when I reference drive cycle it means more than cycling the ignition on and off or merely starting the vehicle a few times.
It's possible some sporadic condition caused a monitored system to temporarily fall outside of spec. If the condition truly was temporary the CEL will extinguish on its own. If it does not then the condition is likely not temporary and will need attention.
This is where my last bullet comes into play:pe, I checked my original post w/regards to fixing the CEL by plugging in a couple times and the second time it happened it was a bit more time intensive than I remember. It took 4 top off plug in's to get the light to go off, which may mean that it takes a few top offs to change the average back to being within spec. And mine happened both times when I was using a slightly dodgy public charger, so your mileage may vary.
Sure, your frustration with the dealer not addressing the issue is understandable. You wrote down the code numbers yes? Make sure the dealers gets them so they can address the issue.So took it to the dealer again. They left it open as they thought it might be a public charge station that caused it. Had it only on my home level 2 charger and the light came back on today.. have had on star so a diagnostic it's the electronic propulsion system not performing as expected and the ion battery not performing as expected with a charging issue. When the light comes on I cant charge the car and says charging not available on the infotainment screen. Has been reset and reprogrammed and I am completely inconvenienced and totally annoyed. If I had to do it again I would not buy a volt...maybe even electric. This has turned me off completely
I understand completely. I have a lot of nostalgia for the cars I grew up with in the 1970s. They were so simple - carburetors, manual brakes and steering, physical distributors with simple timing adjustments, belt-driven water pumps and cooling fans, non-automatic seatbelts, etc etc. Why, when they came out with fuel injection, power brakes, power steering, electronic distributors, electric pumps and fans, automatic seatbelts, and airbags, I just said No to all that.Has been reset and reprogrammed and I am completely inconvenienced and totally annoyed. If I had to do it again I would not buy a volt...maybe even electric. This has turned me off completely
You can still buy those. And they're even no less reliable at 40 years old than they were at 4. You just have to really COMMIT to that whole "I like doing my own maintenance" thing.I understand completely. I have a lot of nostalgia for the cars I grew up with in the 1970s. They were so simple - carburetors, manual brakes and steering, physical distributors with simple timing adjustments, belt-driven water pumps and cooling fans, non-automatic seatbelts, etc etc.
Oh, yeah, that's another thing I miss: the engine overheating while driving up a mountain like that because someone didn't adjust the water pump belt tension correctly. I'm sure overheating isn't completely a thing of the past, but for whatever reason modern cars don't seem to have this problem anywhere near as much.(4,500ft elevation change)