P0AB3 OBD Error Code: Problem & Solutions

<<See All OBD Codes

What causes this error code to get stored in the vehicle? What does P0AB3 error code signify? The failure of the high voltage control module is generally known as the hybrid battery pack air temperature sensor “B” circuit low. The high voltage control module will be informed by the battery pack air temperature sensor on the temperature that is available in the ambient air and in and around the hybrid battery pack. In case the high voltage control module, finds an irregular signal from the hybrid battery pack air temperature sensor, then the P0AB3 error will be set. The temperature sensor will act as a part of the battery pack assembly in most vehicles.

You might notice that the intake air temperature sensor is present in the HV battery assembly. As the intake air temperature keeps altering, the resistance value will also vary. The characteristics of the intake air temperature sensor as well as the battery temperature sensor will be the same. The battery ECU will start using the signal from the intake air temperature sensor to vary the air flow speed of the battery blower assembly.

What causes this problem with the Hybrid Battery Pack Air Temperature Sensor "B" Circuit Low?

• The HV battery assembly might be damaged.
• You will see an opening or short circuit in the HV battery assembly harness.
• The bad electrical connection in the HV battery assembly.
• Damaged battery ECU

1. Engine Control Module - Does your car jump start on reverse polarity? It is an indication of damaged ECM. Repair / replace it soon to avoid P0AB3 error.
2. Powertrain Control Module - If you find the check engine light on the display dashboard, then the PCM is faulty. Replace it as soon as possible to avoid the P0AB3 error.
3. HV Battery Assembly - The P0AB3 error code can be avoided when the faulty hybrid battery pack is replaced.
4. Hybrid Battery Pack - A damaged hybrid battery pack can give rise to unusual noises in your engine. Replace it as soon as possible.
5. Battery - Low battery fluid level is an indication of malfunctioning batteries. Get rid of the P0AB3 error by replacing the batteries.

If you are facing OBD error code P0AB3, then there are significant common symptoms that can be felt or observed. We have worked out a list here to help you out in understanding this problem better.

Common Symptoms

• Indications of misfiring.
• The service engine’s warning light and engine light will keep blinking and stays on.
• Use of fuel consumption might be more.
• Performance might be weak by the engine

It is very important to fix the fault code. So here are some ways with which you can correct this issue:

• Replacing the faulty hybrid battery pack and hybrid battery pack assembly.
• Changing the engine control module/ powertrain control module which is damaged.

To do all this, you will need a few high-quality auto parts such as HV battery assembly, HV battery assembly harness, battery ECU and so on. From where will you get them? From your local store? Well, why go there when you can order quality parts with us while sitting in the comfort of your home. So, just browse through our website and order your needed parts today.

It is essential to diagnose this fault code. Here are some steps which a mechanic should follow for diagnosing the problem that triggered a P0AB3 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 assembly 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 P0AB3 Code

• An issue with the electrical wires.
• Defective high voltage battery assembly.
• The level of the engine oil is low.
• High voltage control module might be broken