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Home >> Chevrolet >> 2013 >> Volt L4-1.4L Elect >> Repair and Diagnosis >> A L L Diagnostic Trouble Codes ( DTC ) >> Testing and Inspection >> P Code Charts >> P0B64 >> Part 2

Part 2




DTC P0B3B-P0BBB, P1B16-P1B2D, P1B45-P1BFE, P1E01-P1E06, or P1E4C-P1E8A

Part 2 of 2

Diagnostic Instructions


DTC P1E05
- Hybrid/EV Battery 96 Circuit Low Voltage

DTC P1E06
- Hybrid/EV Battery 96 Circuit High Voltage

DTC P1E4C
- Hybrid/EV Battery 33 Circuit

DTC P1E4D
- Hybrid/EV Battery 34 Circuit

DTC P1E4E
- Hybrid/EV Battery 35 Circuit

DTC P1E4F
- Hybrid/EV Battery 36 Circuit

DTC P1E50
- Hybrid/EV Battery 37 Circuit

DTC P1E51
- Hybrid/EV Battery 38 Circuit

DTC P1E52
- Hybrid/EV Battery 39 Circuit

DTC P1E53
- Hybrid/EV Battery 40 Circuit

DTC P1E54
- Hybrid/EV Battery 41 Circuit

DTC P1E55
- Hybrid/EV Battery 42 Circuit

DTC P1E56
- Hybrid/EV Battery 43 Circuit

DTC P1E57
- Hybrid/EV Battery 44 Circuit

DTC P1E58
- Hybrid/EV Battery 45 Circuit

DTC P1E59
- Hybrid/EV Battery 46 Circuit

DTC P1E5A
- Hybrid/EV Battery 47 Circuit

DTC P1E5B
- Hybrid/EV Battery 48 Circuit

DTC P1E5C
- Hybrid/EV Battery 49 Circuit

DTC P1E5D
- Hybrid/EV Battery 50 Circuit

DTC P1E5E
- Hybrid/EV Battery 51 Circuit

DTC P1E5F
- Hybrid/EV Battery 52 Circuit

DTC P1E60
- Hybrid/EV Battery 53 Circuit

DTC P1E61
- Hybrid/EV Battery 54 Circuit

DTC P1E62
- Hybrid/EV Battery 55 Circuit

DTC P1E63
- Hybrid/EV Battery 56 Circuit

DTC P1E64
- Hybrid/EV Battery 57 Circuit

DTC P1E65
- Hybrid/EV Battery 58 Circuit

DTC P1E66
- Hybrid/EV Battery 59 Circuit

DTC P1E67
- Hybrid/EV Battery 60 Circuit

DTC P1E68
- Hybrid/EV Battery 61 Circuit

DTC P1E69
- Hybrid/EV Battery 62 Circuit

DTC P1E6A
- Hybrid/EV Battery 63 Circuit

DTC P1E6B
- Hybrid/EV Battery 64 Circuit

DTC P1E6C
- Hybrid/EV Battery 65 Circuit

DTC P1E6D
- Hybrid/EV Battery 66 Circuit

DTC P1E6E
- Hybrid/EV Battery 67 Circuit

DTC P1E6F
- Hybrid/EV Battery 68 Circuit

DTC P1E70
- Hybrid/EV Battery 69 Circuit

DTC P1E71
- Hybrid/EV Battery 70 Circuit

DTC P1E72
- Hybrid/EV Battery 71 Circuit

DTC P1E73
- Hybrid/EV Battery 72 Circuit

DTC P1E74
- Hybrid/EV Battery 73 Circuit

DTC P1E75
- Hybrid/EV Battery 74 Circuit

DTC P1E76
- Hybrid/EV Battery 75 Circuit

DTC P1E77
- Hybrid/EV Battery 76 Circuit

DTC P1E78
- Hybrid/EV Battery 77 Circuit

DTC P1E79
- Hybrid/EV Battery 78 Circuit

DTC P1E7A
- Hybrid/EV Battery 79 Circuit

DTC P1E7B
- Hybrid/EV Battery 80 Circuit

DTC P1E7C
- Hybrid/EV Battery 81 Circuit

DTC P1E7D
- Hybrid/EV Battery 82 Circuit

DTC P1E7E
- Hybrid/EV Battery 83 Circuit

DTC P1E7F
- Hybrid/EV Battery 84 Circuit

DTC P1E80
- Hybrid/EV Battery 85 Circuit

DTC P1E81
- Hybrid/EV Battery 86 Circuit

DTC P1E82
- Hybrid/EV Battery 87 Circuit

DTC P1E83
- Hybrid/EV Battery 88 Circuit

DTC P1E84
- Hybrid/EV Battery 89 Circuit

DTC P1E85
- Hybrid/EV Battery 90 Circuit

DTC P1E86
- Hybrid/EV Battery 91 Circuit

DTC P1E87
- Hybrid/EV Battery 92 Circuit

DTC P1E88
- Hybrid/EV Battery 93 Circuit

DTC P1E89
- Hybrid/EV Battery 94 Circuit

DTC P1E8a
- Hybrid/EV Battery 95 Circuit

Circuit/System Description

The hybrid/EV battery pack contains 288 cells. Groups of three cells are welded together in parallel. There are a total of 96 cell groups in the hybrid/EV battery pack assembly. These cell groups are electrically connected in series. Each individual cell group is rated at 3.7 V, for a nominal system voltage of 355 V direct current. The battery cells are also grouped together into three sections. The first 90 cells / 30 cell groups make up battery section one. This section is adjacent to the cowl and contains batteries 67 through 96. Battery section two is located behind section one. It is made up of 72 cells / 24 cell groups and contains batteries 43 through 66. The transverse battery section is section number three, it is made up of the remaining 126 cells / 42 cell groups and contains batteries 1 through 42. The three battery sections are individually serviceable components.

The hybrid/EV battery energy control module monitors the voltage of the 96 battery cell groups through the four hybrid/EV battery interface control modules. Voltage sense circuits are attached to each individual cell group, and these sense circuits terminate at a connector located on the top surface of the battery section. A serviceable auxiliary battery wiring harness joins this connector to a hybrid/EV battery interface control module, also located on the top surface of the battery section. The hybrid/EV battery interface control module encodes the voltage reading and transmits it to the battery energy control module through the battery control harness. There is one hybrid/EV battery interface control module located on battery sections one and two, and two hybrid/EV battery interface control modules associated with battery section three. The hybrid/EV battery interface control module, hybrid/EV battery energy control module wiring harness, auxiliary battery wiring harness and hybrid/EV battery energy control module are all considered serviceable components.

The hybrid/EV battery energy control module will determine when a fault condition is present. Diagnostics and system status are communicated from the hybrid/EV battery energy control module to hybrid/EV powertrain control module 2 through serial data. The hybrid/EV powertrain control module 2 is the host controller for diagnostic trouble code information.

Conditions for Running the DTC

DTC P0B3B, P0B3D, P0B3E, P0B40, P0B42, P0B43, P0B45, P0B47, P0B48, P0B4A, P0B4C, P0B4D, P0B4F, P0B51, P0B54, P0B52, P0B56, P0B57, P0B59, P0B5B, P0B5C, P0B5E, P0B60, P0B61, P0B63, P0B65, P0B66, P0B68, P0B6A, P0B6B, P0B6D, P0B6F, P0B70, P0B72, P0B74, P0B75, P0B77, P0B79, P0B7A, P0B7C, P0B7E, P0B7F, P0B81, P0B83, P0B84, P0B86, P0B88, P0B89, P0B8B, P0B8D, P0B8E, P0B90, P0B92, P0B93, P0B95, P0B97, P0B98, P0B9A, P0B9C, P0B9D, P0B9F, P0BA1, P0BA2, P0BA4, P0BA6, P0BA7, P0BA9, P0BAB, P0BAC, P0BAE, P0BB0, P0BB1, P0BB3, P0BB5, P0BB6, P0BB8, P0BBA, P0BBB, P1B17, P1B18, P1B1A, P1B1B, P1B1D, P1B1E, P1B20, P1B21, P1B23, P1B24, P1B26, P1B27, P1B28, P1B29, P1B2A, P1B2B, P1B2C, P1B2D, P1B46, P1B47, P1B4A, P1B4C, P1B4D, P1B4F, P1B50, P1B52, P1B53, P1B55, P1B56, P1B58, P1B59, P1B5B, P1B5C, P1B5E, P1B5F, P1B61, P1B64, P1B62, P1B65, P1B67, P1B68, P1B6A, P1B6B, P1B6D, P1B6E, P1B70, P1B71, P1B73, P1B74, P1B76, P1B77, P1B79, P1B7A, P1B7C, P1B7D, P1B7F, P1B80, P1B82, P1B83, P1B85, P1B86, P1B88, P1B89, P1B8B, P1B8C, P1B8E, P1B8F, P1B91, P1B92, P1B94, P1B95, P1B97, P1B98, P1B9A, P1B9B, P1B9D, P1B9E, P1BA0, P1BA1, P1BA3, P1BA4, P1BA6, P1BA7, P1BA9, P1BAA, P1BAC, P1BAD, P1BAF, P1BB0, P1BB2, P1BB3, P1BB5, P1BB6, P1BB8, P1BB9, P1BBB, P1BBC, P1BBE, P1BBF, P1BC1, P1BC2, P1BC4, P1BC5, P1BC7, P1BC8, P1BCA, P1BCB, P1BCD, P1BCE, P1BD0, P1BD1, P1BD3, P1BD4, P1BD6, P1BD7, P1BD9, P1BDA, P1BDC, P1BDD, P1BDF, P1BE0, P1BE2, P1BE3, P1BE5, P1BE6, P1BE8, P1BE9, P1BEB, P1BEC, P1BEE, P1BEF, P1BF1, P1BF2, P1BF4, P1BF5, P1BF7, P1BF8, P1BFA, P1BFB, P1BFD, P1BFE, P1E02, P1E03, P1E05, P1E06, P1E4C, P1E4D, P1E4E, P1E4F, P1E50, P1E51, P1E52, P1E53, P1E54, P1E55, P1E56, P1E57, P1E58, P1E59, P1E5A, P1E5B, P1E5C, P1E5D, P1E5E, P1E5F, P1E60, P1E61, P1E62, P1E63, P1E64, P1E65, P1E66, P1E67, P1E68, P1E69, P1E6A, P1E6B, P1E6C, P1E6D, P1E6E, P1E6F, P1E70, P1E71, P1E72, P1E73, P1E74, P1E75, P1E76, P1E77, P1E78, P1E79, P1E7A, P1E7B, P1E7C, P1E7D, P1E7E, P1E7F, P1E80, P1E81, P1E82, P1E83, P1E84, P1E85, P1E86, P1E87, P1E88, P1E89, P1E8A

All of the following conditions exist:

* Vehicle in Service Mode, Vehicle ON or Engine Running.

* The hybrid/EV battery energy control module is awake and communicating.

* None of the following DTCs are set; P1A07, P1E8E, P1E8F, P1E90, P1E91, P1E92, P1E93, P1E94, P1E95, P1E96, P1E97, P1E98, P1E99, P1E9A, P1E9B, P1E9C, P1E9D, P1E9E, P1E9F , P1EA0, P1EA1, P1EA2, P1EA3, P1EA4, P1EA5, P1EB1, P1EB2, P1EB3, P1EB4, P1EB5, U2402, U2603, U2604, U2605, U2606.

DTC P0B3C, P0B41, P0B46, P0B4B, P0B50, P0B55, P0B5A, P0B5F, P0B64, P0B69, P0B6E, P0B73, P0B78, P0B7D, P0B82, P0B87, P0B8C, P0B91, P0B96, P0B9B, P0BA0, P0BA5, P0BAA, P0BAF, P0BB4, P0BB9, P1B19, P1B1F, P1B25, P1B45, P1B48, P1B4B, P1B4E, P1B51, P1B54, P1B57, P1B5A, P1B5D, P1B60, P1B63, P1B66, P1B69, P1B6C, P1B6F, P1B72, P1B75, P1B78, P1B7B, P1B7E, P1B81, P1B84, P1B87, P1B8A, P1B8D, P1B90, P1B93, P1B96, P1B99, P1B9C, P1B9F, P1BA2, P1BA5, P1BA8, P1BAB, P1BAE, P1BB1, P1BB4, P1BB7, P1BBA, P1BBD, P1BC0, P1BC3, P1BC6, P1BC9, P1BCC, P1BCF, P1BD2, P1BD5, P1BD8, P1BDB, P1BDE, P1BE1, P1BE4, P1BE7, P1BEA, P1BED, P1BF0, P1BF3, P1BF6, P1BF9, P1BFC, P1E01, P1E04

All of the following conditions exist:

* Vehicle ON.

* Vehicle speed is greater than 0.

* There is a change in the Voltage and Current readings.

* DTC U185A is not set.

Conditions for Setting the DTC

Battery Circuit

* P0B3B, P0B40, P0B45, P0B4A, P0B4F, P0B54, P0B59, P0B5E, P0B63, P0B68, P0B6D, P0B72, P0B77, P0B7C, P0B81, P0B86, P0B8B, P0B90, P0B95, P0B9A, P0B9F, P0BA4, P0BA9, P0BAE, P0BB3, P0BB8, P1B28, P1B29, P1B2A, P1B2B, P1B2C, P1B2D, P1E4C, P1E4D, P1E4E, P1E4F, P1E50, P1E51, P1E52, P1E53, P1E54, P1E55, P1E56, P1E57, P1E58, P1E59, P1E5A, P1E5B, P1E5C, P1E5D, P1E5E, P1E5F, P1E60, P1E61, P1E62, P1E63, P1E64, P1E65, P1E66, P1E67, P1E68, P1E69, P1E6A, P1E6B, P1E6C, P1E6D, P1E6E, P1E6F, P1E70, P1E71, P1E72, P1E73, P1E74, P1E75, P1E76, P1E77, P1E78, P1E79, P1E7A, P1E7B, P1E7C, P1E7D, P1E7E, P1E7F, P1E80, P1E81, P1E82, P1E83, P1E84, P1E85, P1E86, P1E87, P1E88, P1E89, P1E8A are type B DTCs.

* The hybrid/EV battery energy control module detects high resistance on the circuit.

Circuit Performance

* P0B3C, P0B41, P0B46, P0B4B, P0B50, P0B55, P0B5A, P0B5F, P0B64, P0B69, P0B6E, P0B73, P0B78, P0B7D, P0B82, P0B87, P0B8C, P0B91, P0B96, P0B9B, P0BA0, P0BA5, P0BAA, P0BAF, P0BB4, P0BB9, P1B19, P1B1F, P1B25, P1B45, P1B48, P1B4B, P1B4E, P1B51, P1B54, P1B57, P1B5A, P1B5D, P1B60, P1B63, P1B66, P1B69, P1B6C, P1B6F, P1B72, P1B75, P1B78, P1B7B, P1B7E, P1B81, P1B84, P1B87, P1B8A, P1B8D, P1B90, P1B93, P1B96, P1B99, P1B9C, P1B9F, P1BA2, P1BA5, P1BA8, P1BAB, P1BAE, P1BB1, P1BB4, P1BB7, P1BBA, P1BBD, P1BC0, P1BC3, P1BC6, P1BC9, P1BCC, P1BCF, P1BD2, P1BD5, P1BD8, P1BDB, P1BDE, P1BE1, P1BE4, P1BE7, P1BEA, P1BED, P1BF0, P1BF3, P1BF6, P1BF9, P1BFC, P1E01, P1E04 are type B DTCs.

* The faulted cell group does not change voltage.

Low Voltage

* P0B3D,P0B42, P0B47, P0B4C, P0B51, P0B56, P0B5B, P0B60, P0B65, P0B6A, P0B6F, P0B74, P0B79, P0B7E, P0B83, P0B88, P0B8D, P0B92, P0B97, P0B9C, P0BA1, P0BA6, P0BAB, P0BB0, P0BB5, P0BBA, P1B17, P1B1A, P1B1D, P1B20, P1B23, P1B26, P1B46, P1B4C, P1B4F, P1B52, P1B55, P1B58, P1B5B, P1B5E, P1B61, P1B64, P1B67, P1B6A, P1B6D, P1B70, P1B73, P1B76, P1B79, P1B7C, P1B7F, P1B82, P1B85, P1B88, P1B8B, P1B8E, P1B91, P1B94, P1B97, P1B9A, P1B9D, P1BA0, P1BA3, P1BA6, P1BA9, P1BAC, P1BAF, P1BB2, P1BB5, P1BB8, P1BBB, P1BBE, P1BC1, P1BC4, P1BC7, P1BCA, P1BCD, P1BD0, P1BD3, P1BD6, P1BD9, P1BDC, P1BDF, P1BE2, P1BE5, P1BE8, P1BEB, P1BEE, P1BF1, P1BF4, P1BF7, P1BFA, P1BFD, P1E02, P1E05 are type B DTCs.

* Any hybrid/EV battery voltage signal is less than 0.2 V.

High Voltage

* P0B3E, P0B43, P0B48, P0B4D, P0B52, P0B57, P0B5C, P0B61, P0B66, P0B6B, P0B70, P0B75, P0B7A, P0B7F, P0B84, P0B89, P0B8E, P0B93, P0B98, P0B9D, P0BA2, P0BA7, P0BAC, P0BB1, P0BB6, P0BBB, P1B18, P1B1B, P1B1E, P1B21, P1B24, P1B27, P1B47, P1B4A, P1B4D, P1B50, P1B53, P1B56, P1B59, P1B5C, P1B5F, P1B62, P1B65, P1B68, P1B6B, P1B6E, P1B71, P1B74, P1B77, P1B7A, P1B7D, P1B80, P1B83, P1B86, P1B89, P1B8C, P1B8F, P1B92, P1B95, P1B98, P1B9B, P1B9E, P1BA1, P1BA4, P1BA7, P1BAA, P1BAD, P1BB0, P1BB3, P1BB6, P1BB9, P1BBC, P1BBF, P1BC2, P1BC5, P1BC8, P1BCB, P1BCE, P1BD1, P1BD4, P1BD7, P1BDA, P1BDD, P1BE0, P1BE3, P1BE6, P1BE6, P1BE9, P1BEC, P1BEF, P1BF2, P1BF5, P1BF8, P1BFB, P1BFE, P1E03, P1E06 are type B DTCs.

* Any hybrid/EV battery voltage signal is greater than 4.8 V.

Action Taken When the DTC Sets

* DTC P0B3B-P0BBB, P1B16-1B27, P1B45-P1BFE, P1E01-P1E06 or P1E4C-P1E8A are type B DTCs.

* If any of these DTCs are set, the vehicle will operate in a reduced power mode and electric only engine ON mode.

* If additional fault conditions occur, this may cause the contactors to open at anytime.

Conditions for Clearing the DTC

* DTC P0B3B-P0BBB, P1B16-1B27, P1B45-P1BFE, P1E01-P1E06 or P1E4C-P1E8A are type B DTCs.

* No hybrid/EV battery voltage signal is less than 0.2 V or greater than 4.8 V.

* Vehicle must be cycled from ON to OFF.

Reference Information

Schematic Reference

Hybrid Energy Storage Schematics Hybrid Energy Storage Schematics

Connector End View Reference

Component Connector End Views Hybrid/EV Battery Pack X1

Description and Operation

Drive Motor Battery System Description Drive Motor Battery System Description

Electrical Information Reference

* Circuit Testing Circuit Testing

* Connector Repairs Connector Repairs

* Testing for Intermittent Conditions and Poor Connections Testing for Intermittent Conditions and Poor Connections

* Wiring Repairs Wiring Repairs

DTC Type Reference

Powertrain Diagnostic Trouble Code (DTC) Type Definitions Powertrain Diagnostic Trouble Code (DTC) Type Definitions

Scan Tool Reference

Control Module References Programming and Relearning for scan tool information

Special Tools

* EL-48571-25 - High Voltage Battery Pin Out Box

* EL-48900 - HEV Safety Kit

For equivalent regional tools, refer to Special Tools Tools and Equipment.

Circuit/System Verification

Vehicle in Service Mode, observe the scan tool Hybrid/EV Battery 1-96 parameters. Each reading should be between 3.0-4.1 V, and all readings should be within 0.1 V of each other.

Circuit/System Testing

Danger: Always perform the High Voltage Disabling procedure prior to servicing any High Voltage component or connection. Personal Protection Equipment (PPE) and proper procedures must be followed.


The High Voltage Disabling procedure includes the following steps:


* Identify how to disable high voltage.


* Identify how to test for the presence of high voltage.


* Identify condition under which high voltage is always present and personal protection equipment (PPE) and proper procedures must be followed.


Before working on any high voltage system, be sure to wear the following Personal Protection Equipment:


* Safety glasses with appropriate side shields when within 15 meters (50 feet) of the vehicle, either indoors or outdoors.


* Certified and up-to-date Class "0" Insulation gloves rated at 1000V with leather protectors.


- Visually and functionally inspect the gloves before use.


- Wear the Insulation gloves with leather protectors at all times when working with the high voltage battery assembly, whether the system is energized or not.


Failure to follow the procedures may result in serious injury or death.


Danger: The Volt Battery Pack will utilize an exchange program. Please consult the most recent revision of bulletin/PI #PIP4841, available in Service Information (SI), for a list of approved Volt Battery Pack service procedures. Components that may be removed and serviced without exchanging the complete battery pack are identified in the bulletin/PI. Please contact the GM Technical Assistance Center if you have any questions.


1. Vehicle OFF, disable high voltage at the A4 hybrid/EV battery pack. Refer to High Voltage Disabling High Voltage Disabling.

2. Remove the A4 hybrid/EV battery pack from the vehicle. Refer to Drive Motor Battery Replacement and Shipping Preparation (Volt) Procedures

3. Remove the A4 hybrid/EV battery pack cover. Refer to Drive Motor Battery Cover Replacement Drive Motor Battery Cover Replacement

4. Connect the battery tray ground straps with a jumper to chassis ground.

Note: Do not leave the EL-48571-25 connected to the orange hybrid/EV battery interface control module harness or leave the orange hybrid/EV battery interface control module harness disconnected for more than one hour.

Leaving the EL-48571-25 connected to the orange hybrid/EV battery interface control module harness or leaving the orange hybrid/EV battery interface control module harness disconnected for
more than one hour will result in a unrecoverable unbalanced hybrid/EV battery section.

Note: Use the schematics to identify the correct hybrid/EV battery interface control module and battery section.

5. Disconnect the appropriate hybrid/EV battery interface control module harness connector.

6. Insert the DMM probes into the EL-48571-25 test cavities.

7. Measure and record the voltage of each of the cell groups by cycling the EL-48571-25 through each of the switch positions. Refer to EL-48571 High Voltage Battery Pin Out Box Reference Initial Inspection and Diagnostic Overview.

8. Each cell group voltage reading should be between 3.0-4.1 V.

• If not within the specified range, test the circuit for a short to ground or an open/high resistance. If the circuit tests normal, replace the appropriate C4 hybrid/EV battery section.

9. Each cell group voltage reading should be within 0.1 V of each other.

• If not within the specified range, test the circuit for a short to ground or an open/high resistance. If the circuit tests normal, replace the appropriate C4 hybrid/EV battery section.

10. If all circuits test normal, replace the appropriate K112 hybrid/EV battery interface control module.

Repair Instructions

Perform the Diagnostic Repair Verification Verification Tests after completing the diagnostic procedure.

* Cell Battery Replacement (Section 3) Cell Battery Replacement (Section 3)Cell Battery Replacement (Section 1) Cell Battery Replacement (Section 1)Cell Battery Replacement (Section 2) Cell Battery Replacement (Section 2) - C4 hybrid/EV battery section

* Drive Motor Battery Replacement and Shipping Preparation (Volt) Procedures - A4 hybrid/EV battery pack

* Auxiliary Battery Wiring Harness Replacement (Module Harness 2) Auxiliary Battery Wiring Harness Replacement (Module Harness 2)Auxiliary Battery Wiring Harness Replacement (Module Harness 3) Auxiliary Battery Wiring Harness Replacement (Module Harness 3)Auxiliary Battery Wiring Harness Replacement (Module Harness 4) Auxiliary Battery Wiring Harness Replacement (Module Harness 4)Auxiliary Battery Wiring Harness Replacement (Module Harness 1) Auxiliary Battery Wiring Harness Replacement (Module Harness 1)

* Control Module References Programming and Relearning for hybrid/EV battery energy control module and hybrid/EV battery interface control modules 1-4 replacement, programming and setup
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