thanks Michbolt. The warning light (and therefore code?) stayed off during the 1hr drive home from dealer. If it stays off during tomorrows driving, I'll ask dealer of absence of warning light means 'no problem,'.I would defer to the service tech, but there have been a few reports of a relay error due to timing issues (not an actual failure). In those situations, just clearing the code resolved the issue (the code didn't come back). In your case, if the code persists, then you probably have to get it repaired.
Have you had your battery replaced under the recall? Are there any outstanding recalls on your Bolt (software updates)? Another possible (cheaper) option is just to have the software updated (if there are any open recalls) and see if that fixes the problem.
thanks Plaj. All recalls and updates completed. The bulletin you referenced reads to me like something the dealer technician would try. I lack the eqpt and expertise to do myself. also, the car drives fine; no problem with 'READY' mode. And the 2nd code that was found is not mentioned in this bulletin, so perhaps not a solution.Have you tried the procedure in 17-NA-372 (10 power cycles)? https://static.nhtsa.gov/odi/tsbs/2017/MC-10139138-9999.pdf
I have had code P0AA1 twice and both times the contactor was not actually welded, and the 10 power cycles fixed it. If it does not, then likely you are dealing with an actual stuck contactor. Has the battery recall been done on your car? If not, the relevant contactor is inside the battery case and will be replaced along with the battery.
thanks Greg.Check the health of the 12V PbA Auxiliary battery. If it's the original, it's at the end of its service life, and weak 12V batteries can cause all kinds of issues in the Bolt and many other vehicles. Load test it. Simply reading voltage under no load doesn't tell you the whole story.
Also...do you give the Bolt plenty of time to boot up, before putting it in gear...every time? You can get odd things happening, if you don't.
BTW, is a 'malfunction indicator light' the same as 'service vehicle soon light'?I would defer to the service tech, but there have been a few reports of a relay error due to timing issues (not an actual failure). In those situations, just clearing the code resolved the issue (the code didn't come back). In your case, if the code persists, then you probably have to get it repaired.
Have you had your battery replaced under the recall? Are there any outstanding recalls on your Bolt (software updates)? Another possible (cheaper) option is just to have the software updated (if there are any open recalls) and see if that fixes the problem.
Aha. Good to know.P1E00 is "Hybrid Powertrain Control Module 2 Requested MIL Illumination", i.e. it only identifies which module triggered the light. In itself it doesn't identify the problem (that's what P0AA1 is for).
If you can turn your car off and on 10 times, waiting at least 5 sec between each power button press, you can essentially execute the bulletin. Even if you don't do it all at once, if you don't see the error come back over the next few days as you turn the car on and off, I would say it was likely a transient issue and not worth worrying about. Definitely not worth throwing $1.5k at unless it is causing you an actual ongoing problem.
Both names are referring the same car-with-exclamation-mark light, what would be the classic "check engine light" if the vehicle had an engine.
OMG - excellent point.I would have thought that this should be covered by the 8-year 100K battery warranty on the replacement battery. The relay is part of the battery pack.
I feel sure the warranty did start over w/ new battery. I will make this point w/ dealer if it comes to that.My replacement battery in my 2017 did this 4 weeks after replacement when the weather went to 0F last January and ended up getting towed and the contactor relay group replaced under warranty although I think it is really just a program issue in quantifying the timing that is acceptable and the relay is sluggish (microseconds) in cold temps. How can that part not be covered which came inside your new battery? I thought the new batteries started over with a new warranty?
