PIP5850A

Bulletin No.: PIP5850A
Published date: 05/13/2022
Preliminary Information
PIP5850A DTC P0BBD Diagnosis and Repair
Proactive
Product Investigation Review Required
Models
Brand:
Model:
Model Years:
VIN:
from
Engine:
to
Transmissions:
Chevrolet
Bolt EV
2017 - 2022
All
All
All
All
Chevrolet
Bolt EUV
2022
All
All
All
All
Involved Region or Country US, Canada, Mexico, Korea, Middle East, Brazil
Condition
Some customers may state the MIL is illuminated, the Driver Information Center
displays “Propulsion Power is Reduced”, and the battery will not charge above 30%
SOC.
These are the remedial actions taken by the vehicle after diagnostic P0BBD fails.
Scan for DTCs and determine if P0BBD is present. If not, this bulletin does not apply.
Cause
There are some customer driving scenarios which may induce P0BBD without a true
battery cell problem.
Known cases occur at very low vehicles speeds and perhaps by applying the brake
and accelerator at the same time.
Correction:
Product Engineering is developing a permanent programming solution, but it is not yet available.
Follow the procedure below to determine whether or not the customer may have induced P0BBD.
Important: Not all instances of P0BBD will be induced by the customer and may require replacement of the
battery pack.
Service Procedure:
Use GDS2 to observe the following data parameter:
Hybrid/Electric Vehicle Battery Pack Voltage Variation Exceeded Limit – Battery Cell
This parameter is available by navigating to:
Module Diagnosis: K114B Hybrid/EV Powertrain Control Module 2: Data Display Folder: Data Display
Icon: Voltage Data
If the parameter Hybrid/Electric Vehicle Battery Pack Voltage Variation Exceeded Limit – Battery Cell - reads one of
the cell numbers “40, 67, or 87" then it is suspected that the customer drives in a way that may set P0BBD without
an actual cell problem.
Given the necessary remedial actions of the diagnostic, it is advised to separate the car from the customer until a
nal solution is available.
For North America, Contact GM Technical Assistance to start a case and advise of this bulletin number.
You will be contacted via DCM once a programming solution becomes available.
O er the customer a rental vehicle until a solution is available.
The cost for a rental vehicle is included for the duration of the EV Component Limited Warranty.
Store the vehicle between 30% - 50% state of charge until the solution is available.
If the value is any other cell number, then proceed with a pack replacement following the battery exchange
bulletin # 19-NA-194 and the service procedure found in Drive Motor Battery Replacement and Shipping
Preparation in SI.
A vehicle which has not had a pack replacement since October 2021 will be eligible to be opened for its
appropriate hardware replacement eld action by following the steps outlined in bulletin PIC6449.
In those cases, follow the eld action service procedure.
Warranty Information
For vehicles repaired under the Bumper-to-Bumper coverage (Canada Base Warranty coverage), use the following
labor operation. Reference the Applicable Warranties section of Investigate Vehicle History (IVH) for coverage
information.
Labor Operation
5080328
5031030
Version History
Description
Labor Time
Diagnosis, Rental car, and Storage for DTC P0BBD
0.3 Hr.
Drive Motor Battery Replacement and Shipping
3.0 Hr.
Preparation
Diagnosis Time (Excluding US/Canada) - You may claim
up to the allowable labor hours depending on actual
Add Time: 0.0-0.3 Hr.
time to perform diagnosis.
Diagnosis Time (US/Canada only) - You may claim up to
the allowable labor hours depending on actual time to
Add Time 0.0-1.0 Hr.
perform diagnosis
To Fill Cooling System
Add Time 0.3 Hr.
Version History
Version
Modi ed
2
05/03/2022 - Created on.
05/13/2022 - Added cells 67 and 87 to the false fail list.
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