Guide To P0B13 OBD Error Code Solutions

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What causes this error code to get stored in the vehicle? What does P0B13 error code signify? The failure of the battery current sensor is generally known as the hybrid battery pack current sensor "A"/"B" correlation. A current sensor is available in the high voltage battery pack which is fixed to the negative battery cable. This sensor will inform the battery control module as to if the battery pack is charged or discharged. If there is any malfunction in the battery control module sensor circuit, then the P0B13 error will be set.

The hybrid battery current sensor is placed inside the hybrid battery pack. The positive high voltage cable which reaches the relay of the positive contactor will go through the hybrid battery pack current sensor. The strength of the electric current that flows in and out of the hybrid /EV batteries is found with the help of hybrid/EV battery pack current sensor. The hybrid/EV battery pack current sensor will receive 5V reference signal after it is monitored by the battery energy control module. A signal between 0 and 5 volt is returned by the hybrid/EV battery pack current sensor to the BECM.

The signal of the hybrid/EV battery pack current sensor is in proper proportion to the strength of current which flows in and out of the hybrid/EV battery pack. If the voltage of the hybrid/EV battery pack current sensor is more than 2.5 V, it means the hybrid/EV battery is charged and it will discharge if the voltage is less than 2.5V. To maintain the precision, 2 measurement ranges are available for hybrid/EV battery pack current sensor where they might overlap at times. The high resolution is from -23 to +23 A and -470 to +280A is for low resolution.

What causes this problem with the Hybrid Battery Pack Current Sensor "A"/"B" Correlation?

• The battery energy control module might be damaged.
• You will see an opening or short circuit in the battery energy control module harness.
• Bad electrical connection in the battery energy control module.

1. Hybrid Battery Pack - The P0B13 error code can be avoided when the faulty hybrid battery pack is replaced.
2. Hybrid Battery Pack Current Sensor - Replacing the defective hybrid battery pack current sensor will make your vehicle function normally.
3. Battery Cables - Do you want to get rid of the P0B13 error code in your vehicle? Then replace the damaged battery cables
4. Battery Current Sensor - Changing the defective battery current sensor can help you to get rid of the P0B13 error in your vehicle.
5. Battery Control Module - Visually inspect for any possible damages in the battery control module and replace it as soon as possible if there are any defects.
6. Engine Control Module - Check the engine control module if it is damaged. If you find it to be faulty replace it immediately.

We at Parts Avatar Canada care for our customers, and that’s why we will help you to diagnose P0B13 code by listing out some major symptoms. They are mentioned below as follows

Common Symptoms

• You might find the engine light or else the warning light of the service engine turned on.

Learn the ways with which you can correct this trouble code:

• Replacing the faulty hybrid battery pack and hybrid battery pack current sensor.
• Changing the engine control module that is damaged.
• The battery cables and battery control module needs replacement.

However, if you face any issue then we have stocked a wide range of best-priced body control module, battery connectors, engine control module (ECM), BCM, power control module and more to help you out in fixing your car.

It is essential to diagnose this fault code. Here are some steps which a mechanic should follow for diagnosing the problem that triggered a P0B13 code to be stored:

• This is a general type of error code, where the mechanic will use a scanner to check for the stored error codes.
• To the diagnostic port, the mechanic will attach the scanner so that every of the stored codes and freeze frame data is retrieved.
• As a first step, the mechanic will start inspecting the hybrid battery pack current sensor and hybrid battery pack as they can give rise to issues in the vehicle.
• After this, the mechanic will start inspecting the components like battery cables, battery control module and so on for some possible damages or defects. If they are defective the mechanic will replace them as needed.
• As a very rare case, the mechanic may come across the faulty engine control module which has to be replaced.
• After every diagnostic process is carefully done, make sure that you reset the code and test drive the vehicle. This has to be done to see if the error codes still appear.
• This step will eventually help the mechanic or the technician to know if the code is still stored and help him to locate the area as to where the fault occurred.

Common Mistakes When Diagnosing the P0B13 Code

At times the mechanics may wrongly perform some diagnosis, whereas the actual problem may lie with the battery control module, battery current sensor and high voltage battery assembly which appears to be faulty.