Bulletin No.: PIP6048
Published date: 02/27/2025

Preliminary Information
PIP6048 P0D22- Possible Software Anomalies on BEV3 Vehicles and
Diagnostic Information
Models
Brand:

Model:

Model Years:

Cadillac LYRIQ
2023
Cadillac Optiq
2025
Chevrolet Blazer EV 2024
Chevrolet Equinox EV 2024

-

2025
2025
2025
2025

VIN:
Engine: Transmissions:
from to
All
All N/A
X0E
All
All N/A
X0C
All
All N/A
X0C X0B X0E
All
All N/A
X0C X0B

Involved Region or
Country

North America and Canada

Additional Options
(RPO)

X0C X0B X0E K28 K2O
Engineering is currently investigating causes for P0D22
that may not be related to hardware failures with the
T18 Battery Charger.
The PI will be updated or replace with a TSB once a
determination has been made.

Condition

The concerns under investigation at this time happen
specifically when charging using level 2 charge
equipment.
Affected vehicles may experience a MIL with P0D22 set
as current or history at the time the vehicle is being
diagnosed.
The customer may also notice the vehicle fails to
charge, the MIL comes on after a charge event has
concluded or once the Target Charge Level (TCL) has
been reached.

Cause

The cause of these conditions may be related to
software anomalies.

Correction:
If an affected vehicle presents with this DTC or these symptoms, reprogram the
K16 Battery Energy Control Module (BECM).

If one of these conditions persists after reprogramming, the condition was not
corrected by the suspected software concern in the BECM engineering is
investigating.
Follow SI Diagnostic procedures for the DTC or symptom that remains after
reprogramming and repair the vehicle according to SI.
P0D22 Diagnostic Information
While the possible software concerns under investigation occur with level 2
charging only, here is some other information that may be useful during P0D22
troubleshooting and testing.

General Diagnostic Information
P0D22 sets when difference between the AC Input Current and the
commanded current value from the battery energy control module is
greater than 4 A for 10 seconds.
P0D22 diagnostics can run while level 1 charging (110 V AC) or level 2
charging (240 V AC)
P0D22 diagnostics do not run when DC fast charging.
P0D22 diagnostics can also run while the charger is being used in "Wall
power" mode.

Level 1 and 2 AC Charging Diagnostic Information
When the vehicle is connected to any form of EVSE (Electric Vehicle Supply
Equipment) that provides level 1 or level 2 charging for the HV battery,
diagnostics for P0D22 can run if the conditions for running the DTC in SI
are met.
Usually level 1 chargers are connected to a 110 V AC outlet. (example: an
outlet you would use to charge your phone)
Usually level 2 chargers are connected to a 240 V AC outlet. (example: an
outlet you would use to plug in an oven or dryer)
Both types of AC chargers can be portable or built-in.
When portable, there is usually a swappable plug that allows the
equipment to change between level 1 and level 2 charging.
Most consumer level charge equipment that is permanently installed is a
level 2 charger

"Wall power" Diagnostic Information
When a vehicle is plugged into a wall charger but does not require HV
battery charging, the energy from the wall charger can be used to support
certain vehicle systems like the HVAC, battery pack heater, etc.
This is done to increase occupant comfort and vehicle readiness without
depleting EV range.
Note- If a customer experiences this failure, they will usually report
that the MIL is on after charging the vehicle for an extended period,
but the State of Charge (SOC) matches what they have programmed
for their TCL.

If you wish to make a charger operate in this way for testing or diagnostics, you
can perform these steps:
1. Check the HV battery SOC percentage on the vehicle
2. Make note of its current level.
3. Using the infotainment display (see the vehicle owners manual) set the TCL
to a level below your current SOC.

4. After selecting a TCL lower than your SOC, leave the vehicle plugged in for
an extended period of time on an AC charger based on the customers
description and see if the fault resets.
Warranty Information
For vehicles repaired under the EV coverage, use the following labor operation. Reference
the Applicable Warranties section of Investigate Vehicle History (IVH) for coverage
information.
Labor Operation

Description

Labor Time

4089488*

P0D22 K16 BECM Re-programming w/SPS2

0.4Hr.

*This is a unique Labor Operation for Bulletin use only.

Version History
Version

1

Modified

02/27/2025 - Created on.

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