Guide To P0BB9 OBD Error Code Solutions

<<See All OBD Codes

The trouble code P0BB9 can be defined as Hybrid Battery Voltage Sense “Z” Circuit Range/Performance. All together 288 cells form the hybrid/electric vehicle battery pack with groups of three cells connected parallels together. All together there is a total of 96 cell groups in the hybrid/EV battery pack assembly (these cell groups are electrically connected in order). It should be noted that each and every individual cell group is rated at 3.7 V for a nominal system voltage of 355 V direct current. Also, these battery cells are tied together and divided into three sections. The battery section one includes first 90 cells/30 cell groups. Located close to the cowl, this section consists of batteries from 67 to 96. Moreover, the battery section two is located on the backside of the section one. Composed of 72 cells/24 cell groups and it also has batteries ranging from 43 to 66. The section number three is known as the transverse battery section; it constitutes of the rest of the 126 cells/42 cell groups and contains batteries from 1 to 42. All these three battery sections found can be easily serviced individually. Apart from the information stated above, the battery energy control module also controls the voltage of the 96 battery cell groups using the four hybrid/EV battery interface control modules.

One can observe voltage sense circuits that are connected to each of these individual cell groups. On the topmost periphery of the battery section, a connector can be seen built where the voltage sense circuits also terminate. Also located on the top surface of the battery section is a serviceable auxiliary battery wiring harness that connects this connector to a hybrid/EV battery interface control module. The decoding of the voltage reading is done by the hybrid/EV battery interface control module which is further transmitted to the battery energy control module via the battery control harness. The battery sections one and two has only one hybrid/EV battery interface control module while there are two hybrid/EV battery interface control modules linked with battery section three. The components that can be serviced easy include the hybrid/EV battery interface control module, battery energy control module wiring harness, auxiliary battery wiring harness, and battery energy control module hybrid/EV battery interface control module, battery energy control module wiring harness, auxiliary battery wiring harness, and battery energy control module. The presence of a fault condition is detected by the battery energy control module. The diagnostics and system status are constantly transmitted from the battery energy control module to hybrid/EV powertrain control module 2 by the serial data. Also, the hybrid/EV powertrain control module 2 is considered to be the main controller for diagnostic trouble code information. A set of mini-batteries packed together constitute the high voltage battery pack. At times when the high voltage control module identifies an error with more than one battery packs that are found in the high voltage battery assembly, then the high voltage control module stores the error code P0BB9.

What causes this problem with the Hybrid Battery Voltage Sense “Z” Circuit Range/Performance?

• Some flaws in the hybrid/electric vehicle battery pack
• Hybrid/electric vehicle battery interface control module might be flawed

1. Battery Temperature Sensor - The temperature sensor is important to keep the battery from overheating. Thus, if the temperature sensor is faulty, it must be replaced immediately. Buy new temperature sensor from us at equitable prices now!
2. Hybrid Battery - Faulty hybrid battery may overheat or discharge quickly, causing drivability issues. It can affect the acceleration and throttle response and can also cause damage to various parts. Replace the faulty hybrid battery now!
3. Engine Control Module - There can be some engine performance issues due to faulty engine control module. If the ECM fails or has any problems it can lead to performance issues with the vehicle like misfires, hesitation, loss of power, and sometimes even decreased fuel economy.
4. Powertrain Control Module - PCM stands for powertrain control module. It is a car part, a control unit which is utilized on motor vehicles. It is generally a combined control unit, consisting of the engine control unit (ECU) and the transmission control unit (TCU).
5. Inverter Cooler Pump - Inverter cooler pump is responsible for keeping the boost converter temperatures under control. Thus, if it is not functioning properly, the converter can overheat and result in underperformance of the system. Buy new cooler pump and replace in now!
6. Electronic Control Unit - If your automobile's check engine light remains on constantly, and never goes off, there's a good chance that your vehicle has a damaged electronic control unit. There are a lot of reasons why a car's check engine light will remain on. The most common reason is a defective ECU.
7. Diagnostic Tool - You will need high grade diagnostic tools for correction of the OBD error code which is detected. Visit us today to grab amazing deals.

Our main motive is to achieve customer satisfaction as for us our customers are everything and that’s why we will help you to diagnose P0BB9 code by mentioning some major symptoms below:

Common Symptoms

• The service engine soon light can start lighting up

If you wish to correct this fault code, then you have to follow certain steps. Correcting a problem needs your careful attention. Here are some ways with the help of which you will be able to correct the OBD Code P0BB9:

• Rehabilitate the defaults in hybrid/electric vehicle battery pack
• It is essential to restore the flawed hybrid/electric vehicle battery interface control module
• Repair or replace the quirky powertrain control module
• Recondition the non-functioning ECU

However, if you face any issue then we have stocked a wide range of best priced HV battery temperature sensor, HV battery assembly, hybrid battery pack cooling fan, HV battery assembly harness, hv battery, pcm, ecm, ecu, pcm module, ecm module and more to help you out in fixing your car.

Here are some steps which you should follow in order to diagnose this fault code:

• Use an OBD-II scanner in order to verify that the code is present, and check for other codes for any other type of error or problem that might need attention.
• The current data along with freeze frame data are recorded, and the codes are then cleared to see if they reoccur.
• The vehicle is inspected for any problems with the wiring and connectors to check for loose connections, corrosion, or shorts.
• The tests related to the hybrid battery voltage sense “Z” circuit and components may help pinpoint the problem, as well as inspection of the current sensor and cut off switch will further be helping the cause.
• The P0BB9 error is triggered if there is a physical problem with the hybrid battery voltage sense “Z” circuit which could cause the engine performance to go off.

Common Mistakes When Diagnosing The P0BB9 Code

• Nonperformance of the high voltage battery connection
• Defaults in the high voltage battery assembly
• Flaws in the wiring