P0BB1 – High Voltage in the Battery Circuit 24 of Hybrid/Electric Vehicles

P0BB1 Possible Causes

Defective hybrid/electric vehicle battery
Faulty hybrid/electric vehicle battery interface control module

What Does It Mean?

How to Fix P0BB1 Code

Check the “possible causes” listed above. Visually inspect the wiring harness and related connectors. Check for damaged components and look for broken, bent, pushed out, or corroded connector pins.

P0BB1 Possible Symptoms

Check engine light illuminated (or service engine soon warning light)

P0BB1 Meaning

The hybrid/electric vehicle battery 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. 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 DC. The battery cells are also grouped into three sections. The first 90 cells/30 cell groups make up battery section one. This section is adjacent to the hood and contains batteries 67 to 96. Battery section two is located behind section one. It consists of 72 cells/24 cell groups and contains batteries 43 to 66. The battery cross member is section number three, it consists of the remaining 126 cells/42 cell groups and contains batteries 1 to 42. The three battery sections are individually serviceable components.

The battery energy control module monitors the voltage of the 96 battery cell groups via the four hybrid/EV battery interface control modules. Voltage sensing circuits are attached to each individual cell group, and these sensing circuits terminate at a connector located on the top surface of the battery section. A serviceable auxiliary battery wiring harness connects 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 via 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, battery energy control module wiring harness, auxiliary battery wiring harness, and battery energy control module are all considered serviceable components.

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

P0BB2 – Intermittent/Erratic Hybrid Battery “X” Voltage Detection Circuit

P0BB2 Possible Causes

Faulty intelligent battery unit
Defective HV battery assembly

What Does It Mean?

How to Fix P0BB2 Code

Check the “possible causes” listed above. Visually inspect the cable harness and associated connectors. Check for damaged components and look for broken, bent, pushed out, or corroded connector pins.

P0BB2 Possible Symptoms

Check engine light illuminated (or service engine soon warning light)

P0BB2 Meaning

The HV battery uses nickel-metal hydride batteries and does not require external charging. The power management control ECU maintains the HV battery’s SOC (state of charge) at a constant level during driving. The HV battery consists of 28 modules, with each module containing eight 1.2V cells connected in series. The intelligent battery unit monitors the battery block voltage at 14 locations. Each battery block consists of 2 modules in one assembly. The intelligent battery unit, which monitors battery block voltages, determines that a malfunction has occurred if the voltage difference between battery blocks exceeds the standard. When the malfunction detection condition is met, the power management control ECU (HV CPU) illuminates the malfunction indicator light (MIL) and sets a diagnostic trouble code (DTC).

P0BB3 – Hybrid/Electric Vehicle Battery 25 Circuit

P0BB3 Possible Causes

Defective hybrid/electric vehicle battery
Faulty hybrid/electric vehicle battery interface control module

What Does It Mean?

How to Fix P0BB3 Code

P0BB3 Possible Symptoms

Check engine light illuminated (or service engine soon warning light)

P0BB3 Meaning

The hybrid/electric vehicle battery 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. 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 DC. The battery cells are also grouped into three sections. The first 90 cells/30 cell groups make up the first battery section. This section is adjacent to the hood and contains batteries 67 to 96. Battery section two is located behind section one. It consists of 72 cells/24 cell groups and contains batteries 43 to 66. The cross-section of the battery is section number three, it consists of the remaining 126 cells/42 cell groups and contains batteries 1 to 42. The three battery sections are individually repairable components.

The battery energy control module monitors the voltage of the 96 battery cell groups via the four hybrid/EV battery interface control modules. Voltage sensing circuits are attached to each individual cell group, and these sensing circuits terminate at a connector located on the top surface of the battery section. A repairable auxiliary battery wiring harness connects 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 via 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, battery energy control module wiring harness, auxiliary battery wiring harness, and battery energy control module are all considered repairable components.

P0BB4 – Performance of Hybrid/Electric Vehicle Battery Circuit 25

P0BB4 Possible Causes

Defective hybrid/electric vehicle battery
Faulty hybrid/electric vehicle battery interface control module

What Does It Mean?

How to Fix P0BB4 Code

Check the “Possible Causes” listed above. Visually inspect the related wiring harness and connectors. Check for damaged components and look for broken, bent, pushed out, or corroded connector pins.

P0BB4 Possible Symptoms

Check engine light illuminated (or service engine soon warning light)

P0BB4 Meaning

The hybrid/electric vehicle battery 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. 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 DC. The battery cells are also grouped into three sections. The first 90 cells/30 cell groups make up battery section one. This section is adjacent to the hood and contains batteries 67 to 96. Battery section two is located behind section one. It consists of 72 cells/24 cell groups and contains batteries 43 to 66. The battery cross section is section number three, it consists of the remaining 126 cells/42 cell groups and contains batteries 1 to 42. The three battery sections are individually serviceable components.

P0BB5 – Low Voltage in Circuit 25 of the Hybrid/Electric Vehicle Battery

P0BB5 Possible Causes

Defective hybrid/electric vehicle battery
Faulty hybrid/electric vehicle battery interface control module

What Does It Mean?

How to Fix P0BB5 Code

P0BB5 Possible Symptoms

Check Engine Light illuminated (or Service Engine Soon warning light)

P0BB5 Meaning

The hybrid/electric vehicle battery 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. These cell groups are electrically connected in series. Each individual cell group is rated at 3.7V, for a nominal system voltage of 355V DC. The battery cells are also grouped into three sections. The first 90 cells/30 cell groups make up the first battery section. This section is adjacent to the hood and contains batteries 67 to 96. Battery section two is located behind section one. It consists of 72 cells/24 cell groups and contains batteries 43 to 66. The cross-car battery section is section number three, it consists of the remaining 126 cells/42 cell groups and contains batteries 1 to 42. All three battery sections are individually serviceable components.

The battery energy control module monitors the voltage of the 96 battery cell groups through the four hybrid/EV battery interface control modules. Voltage sensing circuits are attached to each individual cell group, and these sensing circuits terminate at a connector located on the top surface of the battery section. A serviceable auxiliary battery wiring harness connects 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 codes the voltage reading and transmits it to the battery energy control module via 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, battery energy control module wiring harness, auxiliary battery wiring harness, and battery energy control module are all designated as serviceable components.

P0BB6 – High Voltage in Hybrid/Electric Vehicle Battery Circuit 25

P0BB6 Possible Causes

Defective hybrid/electric vehicle battery
Faulty hybrid/electric vehicle battery interface control module

What Does It Mean?

How to Fix P0BB6 Code

P0BB6 Possible Symptoms

Check engine light illuminated (or service engine soon warning light)

P0BB6 Meaning

The hybrid/electric vehicle battery 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. 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 DC. The battery cells are also grouped into three sections. The first 90 cells/30 cell groups make up battery section one. This section is adjacent to the hood and contains batteries 67 to 96. Battery section two is located behind section one. It consists of 72 cells/24 cell groups and contains batteries 43 to 66. The battery cross-section is section number three, it consists of the remaining 126 cells/42 cell groups and contains batteries 1 to 42. The three battery sections are individually repairable components.

The battery energy control module monitors the voltage of the 96 battery cell groups through the four hybrid/EV battery interface control modules. Voltage sensing circuits are attached to each individual cell group, and these sensing circuits terminate at a connector located on the top surface of the battery section. A serviceable auxiliary battery wiring harness connects 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 via 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, battery energy control module wiring harness, auxiliary battery wiring harness, and battery energy control module are all considered serviceable components.

P0BB7 – Intermittent/Erratic Hybrid Battery “Y” Voltage Sense Circuit

P0BB7 Possible Causes

Faulty smart battery unit
Defective HV battery assembly

What Does It Mean?

How to Fix P0BB7 Code

Check the “Possible Causes” listed above. Visually inspect the wiring harness and associated connectors. Check for damaged components and look for broken, bent, pushed out, or corroded connector pins.

P0BB7 Possible Symptoms

Check engine light illuminated (or service engine soon warning light)

P0BB7 Meaning

The HV battery uses nickel-metal hydride batteries and does not require external charging. The power management control ECU maintains the HV battery’s SOC (state of charge) at a constant level during driving. The HV battery consists of 28 modules, with each module containing eight 1.2V cells connected in series. The smart battery unit monitors the battery block voltage at 14 locations. Each battery block consists of 2 modules in one assembly. The smart battery unit, which monitors battery block voltages, determines that a malfunction has occurred if the voltage difference between battery blocks exceeds the standard. When the malfunction detection condition is met, the power management control ECU (HV CPU) illuminates the malfunction indicator light (MIL) and sets a diagnostic trouble code (DTC).

P0BB8 – Hybrid/Electric Vehicle Battery Circuit 26

P0BB8 Possible Causes

Defective hybrid/electric vehicle battery
Faulty hybrid/electric vehicle battery interface control module

What Does It Mean?

How to Fix P0BB8 Code

Check the “possible causes” listed above. Visually inspect the related wiring harness and connectors. Check for damaged components and look for broken, bent, pushed out, or corroded connector pins.

P0BB8 Possible Symptoms

Check engine light illuminated (or service engine soon warning light)

P0BB8 Meaning

The hybrid/electric vehicle battery 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. 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 DC. The battery cells are also grouped into three sections. The first 90 cells/30 cell groups make up battery section one. This section is adjacent to the hood and contains batteries 67 to 96. Battery section two is located behind section one. It consists of 72 cells/24 cell groups and contains batteries 43 to 66. The battery cross-section is section number three, it consists of the remaining 126 cells/42 cell groups and contains batteries 1 to 42. The three battery sections are individually repairable components.

P0BB9 – Performance of Hybrid/Electric Vehicle Battery Circuit 26

P0BB9 Possible Causes

Defective hybrid/electric vehicle battery
Faulty hybrid/electric vehicle battery interface control module

What Does It Mean?

How to Fix Code P0BB9

Check the “possible causes” listed above. Visually inspect the wiring harness and associated connectors. Check for damaged components and look for broken, bent, pushed out, or corroded connector pins.

P0BB9 Possible Symptoms

Check engine light illuminated (or service engine soon warning light)

P0BB9 Meaning

The hybrid/electric vehicle battery 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. 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 DC. The battery cells are also grouped into three sections. The first 90 cells/30 cell groups make up the first battery section. This section is adjacent to the hood and contains batteries 67 to 96. Battery section two is located behind section one. It consists of 72 cells/24 cell groups and contains batteries 43 to 66. The battery cross-section is section number three, it consists of the remaining 126 cells/42 cell groups and contains batteries 1 to 42. The three battery sections are individually repairable components.

P0BBA – Low Voltage of Circuit 26 of the Hybrid/Electric Vehicle Battery

P0BBA Possible Causes

Defective hybrid/electric vehicle battery
Faulty hybrid/electric vehicle battery interface control module

What Does It Mean?

How to Fix P0BBA Code

P0BBA Possible Symptoms

Check engine light illuminated (or service engine soon warning light)

P0BBA Meaning

The hybrid/electric vehicle battery 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. 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 DC. The battery cells are also grouped into three sections. The first 90 cells/30 cell groups make up battery section one. This section is adjacent to the hood and contains batteries 67 to 96. Battery section two is located behind section one. It consists of 72 cells/24 cell groups and contains batteries 43 to 66. The battery cross-section is section number three, it consists of the remaining 126 cells/42 cell groups and contains batteries 1 to 42. The three battery sections are individually repairable components.