[Leonard123]

Can anyone supply details on the following three codes. Car appeared to be running fine but we returned to base and switched cars. It was 10F outside. All three codes have to do with "the electric propulsion system" but no detail beyond that.

PIAEE
PIAEF
POAC4

 

[TSquare]

Can anyone supply details on the following three codes. Car appeared to be running fine but we returned to base and switched cars. It was 10F outside. All three codes have to do with "the electric propulsion system" but no detail beyond that.

PIAEE
PIAEF
POAC4

I believe you misread the codes.
They should be P1AEE, P1AEF, and P0AC4
P1AEE = Drive Motor A Hybrid Battery System Voltage High
P1AEF = Drive Motor B Hybrid Battery System Voltage High
P0AC4 = Generic, Hybrid Powertrain Control Module requested the MIL illumination.

 

[bmehnooot]

https://gsi.ext.gm.com/gmspo/mode6/pdf/2017/17OBDG01 Hybrid Diagnostics.pdf
You should finde code discription in there
Unless i chose wrong year

 

[Leonard123]

Thanks for the feedback.

The first two codes had notes saying service with 7 days
The third code had a note that said service "immediately". That was the one that made use turn around, go home and switch cars.

I did turn vehicle off and and back on (very brief off period) when we got home and engine light came on again.

This morning took vehicle into dealership for service and guess what ... no engine light. All three codes cleared. Dealer is checking with GM about the stored codes.

 

[Leonard123]

GM via dealer service department:

Do not remote start vehicle when charging the vehicle. There is a remote chance that could set the codes. So in the Northeast US with 0F outside I should run outside, unplug the Volt, remote start it to warm up, and then go back out when it is warmed up?? Sounded to me like a "Hail Mary" pass to give the customer some reason for codes to be set. Maybe I will add a on/off switch inside the house to the outside outlet that I use for charging the Volt.

It codes are set: Push the start button w/o depressing the brake peddle. Exit vehicle and shut the door. Wait a minute, reenter vehicle and start car. Codes should be cleared. This I kind of believe since when I went out to start car to take to the dealership I did push start button w/o the brake and when a few seconds later I started it with foot on brake check engine light was off. So kind of rings true.

 

[rcuz]

GM via dealer service department:

Do not remote start vehicle when charging the vehicle. There is a remote chance that could set the codes. So in the Northeast US with 0F outside I should run outside, unplug the Volt, remote start it to warm up, and then go back out when it is warmed up?? Sounded to me like a "Hail Mary" pass to give the customer some reason for codes to be set. Maybe I will add a on/off switch inside the house to the outside outlet that I use for charging the Volt.

I agree with you. Sounds like crap. The whole point of remote starting is to warm up the car when it is plugged in, not just when unplugged. In less than 15 degree weather (if you've got it set to Deferred) the engine will come on to warm the car if it's not plugged in.

The object should be to find out why the codes are being thrown, not just show you how to clear them. If you are not getting satisfaction, find another dealer if you can.

 

[TSquare]

GM via dealer service department:

Do not remote start vehicle when charging the vehicle. There is a remote chance that could set the codes. So in the Northeast US with 0F outside I should run outside, unplug the Volt, remote start it to warm up, and then go back out when it is warmed up?? Sounded to me like a "Hail Mary" pass to give the customer some reason for codes to be set. Maybe I will add a on/off switch inside the house to the outside outlet that I use for charging the Volt.

Total BS. I have done this dozens of times with a Gen 1 and a Gen 2, never set any codes.