Agree but a key factor in module replacement is knowing the voltage of the modules in the battery and adjust the new module voltage to try and match them. I don't know which CSP was used but I only know three CSP that have the equipment to match the voltage myself and Joe and I believe Bernie in Atanta just purchased one .For the Volt, which has a similar linear hybrid propulsion system, the DTC P1B15 means "Regenerative Braking Torque Request Signal Message Counter Incorrect."
Since this an unusual error code, I'm hoping you might be experiencing a temporary glitch because the new module wasn't matched at the time of installation, and the software is confused.
Try keeping the car on the charger for a full day or two, then allow it to completely discharge so the ICE kicks in. Do this charge/discharge procedure a couple of times before punching the CSP in the nose.
It's not unusual to experience some strange - and temporary - error codes after battery maintenance.
@Harleyguy -- could you give me any contact info on where this equipment can be purchased? Corey, our local CSP, expressed an interest in knowing this, and I will see him on Saturday. Thanks.Agree but a key factor in module replacement is knowing the voltage of the modules in the battery and adjust the new module voltage to try and match them. I don't know which CSP was used but I only know three CSP that have the equipment to match the voltage myself and Joe and I believe Bernie in Atanta just purchased one .