P0B9A - OBD Trouble Code

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Hate these unexplained halts in your journey? Stressed? Well, it could due to a stored error code P0B9A. We have written here all that you need to know about the error code P0B9A. This OBD-II code increased fuel consumption is also known as a hybrid battery voltage sense "T" circuit. Many mini-batteries connected together make up the high voltage battery pack. The high voltage control module stores the error code P0B9A, when it identifies an issue with more than one battery packs that make up the high voltage battery assembly.

Do you know for a fact that in all there are 288 cells in total make up the hybrid/electric vehicle battery pack? A band of three cells are connected together in uniformity can be seen too. There are whole 96 cell groups present in the hybrid/EV battery pack assembly that are connected electrically in-series. Each and every individual cell group graded at 3.7 V is there for a nominal system voltage of 355 V direct current. Also, the battery sections can be seen divided into three sections. The section one contains a total of first 90 cells/30 cell groups. Close to the cowl, you can find that this section consists of batteries from 67 to 96. Then the section 2 consists of 72 cells/24 cell groups and contains batteries from 43 to 66 and can be located at the backside of the section one. Section number three is named as the transverse battery section and is made up of the remaining 126 cells/42 cell groups and contains batteries 1 to 42. All these three sections divided individually are serviceable parts.

The voltage of the all the 96 battery cell groups looked by the battery energy control module through the four hybrid/EV battery interface control modules. There are voltage sense circuits that are linked to each and every individual cell group that end at a connector that is situated on the top surface of the battery section. This connector is linked to the hybrid/EV battery interface control module, that is also located on the top surface of the battery section through a serviceable auxiliary battery wiring harness. The task of decoding the voltage reading is performed by the hybrid/EV battery interface control module that is further sent to the battery energy control module through the battery control harness. The battery sections one and two can be seen having a single hybrid/EV battery interface control module while the battery section three has two hybrid/EV battery interface control module located on it. The auto parts that can be serviced include the hybrid/EV battery interface control module, battery energy control module wiring harness, auxiliary battery wiring harness, and battery energy control module.

The presence of any kind of a fault is brought to notice by the battery energy control module. Also, the diagnostics and system status are informed to the hybrid/EV powertrain control module 2 through serial data by the battery energy control module. The hybrid/EV powertrain control module 2 is the main controller for diagnostic trouble code information.

What causes this problem with the Hybrid Battery Voltage Sense "T" Circuit?

• A failed hybrid/electric vehicle battery pack
• Damaged hybrid/electric vehicle battery interface control module

1. Hybrid Vehicle Battery Pack - Are you suddenly noticing a decreased MPG? Noticing unexplained drop in the battery bars? Well, all this indicative of a fault in the hybrid vehicle battery pack. All you got to do is change or repair it as soon as possible. Tune into Parts Avatar to get yours now!
2. Battery Control Module - Is your engine stalling? Then, you should repair or replace your defective battery control module immediately. Tune into Parts Avatar now!
3. Powertrain Control Module - Having problems with the PCM? Then you should note that this is likely the reason behind harsh shifting that you might have been noticing lately. Change or repair it now!
4. Engine Control Module - Rough idle and loss in engine output are some of the problems that accompany a failure in the ECM. Now get rid of all these problems immediately by changing or repairing your damaged engine control module.

It is essential for you to know the symptoms of an issue as only then you would be able to solve the problem. So that’s why we have listed out some major symptoms of OBD code P0B9A here:

Common Symptoms

• An illuminated check engine light

Here are some ways with the help of which you will be able to correct the OBD code P0B9A:

• Make sure you repair or replace a damaged hybrid/electric vehicle battery pack
• A defective hybrid/electric vehicle battery interface control module should be repaired or replaced as soon as possible

There is no need to be anxious as Parts Avatar – Car Parts Online is here to help you out! We have high grade hybrid vehicle battery pack, hybrid vehicle battery interface control module and a lot more for our precious customers

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

While this code is stored, you might hear noise coming from the the turning radiator fan and the belt that turns the blade of the fan. Under the hood, a lot of devices that are driven by the belt can be found. The engine of the automobile has an engine pulley located that drives all belts. To drive the peripheral devices, the car is equipped with a serpentine belt that has a continuous belt. Make sure that you don’t just repair or replace the parts according to the error code P0B9A DTC. we advise you to refer to the vehicle service manual for all the information on the causes of the fault along with the testings required.

Common Mistakes When Diagnosing the P0B9A Code

Here we have listed a few common mistakes that should be avoided:

• A fault in the high voltage battery connection
• Failed high voltage battery assembly
• Wiring issues present in the system