P0BC4 OBD Error Code: Problem & Solutions

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OBD code P0BC4 is defined as Hybrid Battery Temperature Sensor “E” Circuit Low Issue. The hybrid battery temperature sensor is responsible for telling the ECU about the battery temperatures, which then controls the blower fan as per requirements. If the temperature sensor is faulty, the battery may overheat and have performance issues. OBD code P0BC4 gets stored in the powertrain control module (PCM) when the temperature sensor for circuit “E” is faulty.

The temperature sensor makes use of specific thermistors for measuring the hybrid battery pack temperature. Increase in thermistor resistance signifies low temperatures and with a decrease in the resistance, the sensor senses the battery temperature to be high. However, it the temperature sensor is faulty, it will not be able to read the resistance from the thermistor and thus will not be able to coordinate with the ECU for instructing the cooling system to come into play when needed.

What causes this problem with the Hybrid Battery Temperature Sensor "E" Circuit Low?

• Battery thermistor issue
• Engine control unit failure
• Faulty temperature sensor
• Circuit wiring and connector issue

1. Car Battery - Faulty car battery can have the problem of overheating and fast discharging. Thus, it can affect the motor performance as well as damaged major components. Replace it immediately.
2. Powertrain Control Module - A broken Powertrain Control Module can cause a lot of issues. It can cause wrong OBD error to get stored in the system and affect the functioning of various components, thus affecting the vehicle performance. It would be nice if you get it replaced on time.
3. Inverter Cooler Pump - The inverter cooler pump can also be faulty and not respond to the PCM instructions. This means that even though the temperature sensor and the PCM are working properly, the cooler pump may not work and cause damage to the battery functions. Thus, replace it immediately.
4. Electronic Control Unit - The ECU managed the cooling system to control the battery operating temperatures and thus must be replaced if found faulty. Thus, buy new ECU modules and components form us!
5. Hybrid Drive Cooling Pump - Check for faults in the hybrid battery cooling pump and replace it, if required. If the cooling pump does not function properly, then the battery might not work to its full capacity and can cause serious performance issues.
6. Battery Temperature Sensor - Inspect for faulty battery temperature sensor as it may cause the battery to overheat and not work properly and cause serious physical damages to various starting and charging system components. Thus, replace faulty sensor now!

Have you ever wondered why it is so important to know the symptoms of the problem? Well, it is extremely essential to know the symptoms of the problem in order to detect it. Keeping this in mind, let’s throw some light on a few common symptoms of OBD error code P0BC4.

Common Symptoms

• Light staying On or intermittent
• Wrong codes getting stored in the PCM
• Vehicle going into Limp Mode
• Vehicle not starting due to high temperatures

Have a look at some ways with which you can correct the P0BC4 code:

• Faulty hybrid battery temperature sensor replacement
• Faulty battery cooler pump replacement
• Replacement of damaged thermistors
• Replacement of hybrid battery pack
• Replacing faulty wiring and connectors in relation to sensors and circuits 

There is no need to get strained if your OBD Code is still flashing up as we are here at your service. Have a look at our superior variety of Hybrid battery Temperature Sensor, Hybrid battery Temperature Sensor Harness and many more. Now all your problems would vanish within no time.

If you want to easily diagnose this P0BC4 fault code, then all you have to do is to follow the steps which are mentioned below:

• The error code P0BC4 can be diagnosed using an OBD-II trouble code scanner.
• This scanner should be utilized in order to store the freeze frame data to collect the details of this error code P0BC4 by a certified mechanic.
• The mechanic should also check and confirm the presence of any additional codes.
• Now, if there are a number of codes, they should be aligned in order. It is essential to treat the codes in the order they have been stored in.
• After all the repairs have been performed, it is recommended to clear the codes and reset the system to observe if the code persists.
• If the code fails to reappear, it was likely due to an intermittent issue or was triggered falsely.

Common Mistakes When Diagnosing The P0BC4 Code

• Faulty battery temperature sensor
• Battery circuit wiring and connector issues
• Battery energy control module failure