P0B36 – High Voltage Service Disconnect Circuit High

P0B36 Possible Causes

Faulty high voltage service disconnect port
High voltage service disconnect port harness is open or shorted
High voltage service disconnect port circuit poor electrical connection

What Does It Mean?

How to Fix Code P0B36

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.

P0B36 Possible Symptoms

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

P0B36 Meaning

The engine control module (ECM) monitors the high voltage service disconnect port. The ECM sets the OBDII code when the high voltage service disconnect port does not meet factory specifications.

P0B37 – Open High Voltage Service Disconnector

P0B37 Possible Causes

Faulty high voltage service disconnect port
High voltage service disconnect port harness is open or shorted
High voltage service disconnect port circuit poor electrical connection

What Does It Mean?

How to Fix Code P0B37

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

P0B37 Possible Symptoms

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

P0B37 Meaning

The engine control module (ECM) monitors the high voltage service disconnect port. The ECM sets the OBDII code when the high voltage service disconnect port does not meet factory specifications.

P0B38 – Engine electronics coolant pump “B” control circuit / open

P0B38 Possible Causes

Faulty engine electronics coolant pump “B”
Engine electronics coolant pump wiring harness open or shorted
Poor electrical connection in engine electronics coolant pump circuit

What Does It Mean?

How to Fix Code P0B38

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.

P0B38 Possible Symptoms

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

P0B38 Meaning

The engine control module (ECM) monitors the engine electronics coolant pump “B”. The ECM sets the OBDII code when the engine electronics coolant pump “B” does not meet factory specifications.

P0B39 – Engine electronics coolant pump “B” control circuit low

P0B39 Possible Causes

Faulty engine electronics coolant pump “B”
Engine electronics coolant pump wiring harness is open or short-circuited
Poor electrical connection in the engine electronics coolant pump circuit

What Does It Mean?

How to Fix Code P0B39

P0B39 Symptoms

Possible

Engine light on (or service engine soon warning light)

P0B39 Meaning

The Engine Control Module (ECM) monitors the engine electronics coolant pump “B”. The ECM sets the OBDII code when the electronic engine coolant pump “B” does not meet factory specifications.

P0B3A – Engine Electronics High Coolant Pump “B” Control Circuit

P0B3A Possible Causes

Faulty engine electronics coolant pump “B”
Engine electronics coolant pump wiring harness is open or shorted
Poor electrical connection in engine electronics coolant pump circuit

What Does It Mean?

How to Fix Code P0B3A

P0B3A Possible Symptoms

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

P0B3A Meaning

P0B3B – Hybrid/Electric Vehicle Battery 1 Circuit

P0B3B Possible Causes

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

What Does It Mean?

How to Fix P0B3B Code

P0B3B Possible Symptoms

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

P0B3B 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 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.

P0B3C – Battery Circuit 1 Performance in Hybrid/Electric Vehicles

P0B3C Possible Causes

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

What Does It Mean?

How to Fix P0B3C Code

P0B3C Possible Symptoms

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

P0B3C 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 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.

P0B3D – Low Voltage in Hybrid/Electric Vehicle Battery 1 Circuit

P0B3D Possible Causes

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

What Does It Mean?

How to Fix P0B3D Code

P0B3D Possible Symptoms

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

P0B3D 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.

P0B3E – High Voltage in Hybrid/Electric Vehicle Battery 1 Circuit

P0B3E Possible Causes

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

What Does It Mean?

How to Fix P0B3E Code

P0B3E Possible Symptoms

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

P0B3E 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 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 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.

P0B3F – Hybrid Battery Voltage Sensor “A” Circuit Intermittent/Erratic

P0B3F Possible Causes

Faulty battery smart unit
Faulty HV battery assembly

What Does It Mean?

How to Fix P0B3F 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.

P0B3F Possible Symptoms

Engine light on (or service engine soon warning light)

P0B3F Meaning

The HV battery uses nickel-metal hydride batteries and does not require external charging. The power management control ECU controls the HV battery’s SOC (state of charge) at a constant level during driving. The HV battery consists of 28 modules, and each module consists of eight 1.2V cells in series. The battery smart unit monitors the battery block voltage at 14 locations. Each battery block is composed of 2 modules in an assembly. The battery smart unit, which monitors the voltage of the battery blocks, determines that a malfunction has occurred if a voltage difference between the 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).