P0BC2 - OBD Trouble Code

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If the battery temperature sensor “E” is at fault, the battery can overheat and result in various performance issues. The most common symptoms include Check Engine Light illumination, vehicle not starting due to overheating and faster discharge from the battery. Thus, whenever the hybrid battery temperature sensor “E” doesn’t perform to its expectations, OBD code P0BC2 gets stored in the powertrain control module (PCM).

The hybrid battery contains 3 temperature sensors that continuously measure the batter temperature using its thermistors. The resistance of the thermistor tells the PCM about the battery temperatures. If the battery temperature is less, the thermistor will have high resistance and if the temperature is high, the resistance will get lowered. This resistance is measured by the ECU which then determines the optimal flow of the blower fan to keep the battery functioning properly. If the temperature sensor is not working properly, the OBD code P0BC2 will set in the system and the vehicle can go into fail safe mode.

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

• Hybrid battery thermistor faulty
• Battery smart unit failure
• Faulty battery temperature sensor
• Damaged wiring and connectors in relation to the sensor and circuit

1. Battery Temperature Sensor - If the temperature sensor is faulty, the ECU will not be able to calculate the battery temperatures and the battery can overheat or run cold. Thus, it is important that the temperature sensors work properly so that the ECU can control the blower fan to manage the temperatures. Buy new battery temperature sensors form us.
2. Car Battery - The car battery can also be at fault and might have the problem of overcharging and fast discharging. This can cause increased temperatures and can also affect the functioning of various sensors like the speed sensor, temperature sensor and many more. Thus, replace faulty car battery today!
3. Battery Coolant Pump - The battery coolant pump maintains the battery temperatures and optimizes the air flow to keep the battery running properly. It the coolant pump gets damaged, then all the components associated with the battery can get damaged and the vehicle may enter fail safe mode to avoid damages. Thus, timely replace faulty coolant pump.
4. Engine Control Module - ECM failures and faults can be very difficult to find and resolve as these are very rare and might require a complete reprogramming of the system to avoid wrong codes from getting stored in the system, leading to misdiagnosis. Replace it now!
5. Powertrain Control Module - Faulty PCM can disrupt the normal functioning of the vehicle by affecting the transmission system and the fuel delivery system. This will cause the system to store wrong OBD error and thus can lead to misdiagnosis.
6. Diagnostic Tools - Take the help of a professional mechanic to diagnose OBD code error. Use high grade diagnostic tools to resolve this issue. Buy new tools and equipment form us!

Our main motive is to achieve customer satisfaction and that’s why we will help you to diagnose P0BC2 code by mentioning some major symptoms below:

Common Symptoms

• Check Engine Light illumination
• Increased battery temperatures
• Vehicle may not start or function properly

It is very important to fix the fault code P0BC2. So here are some ways with which you can correct this issue:

• Hybrid battery replacement
• Battery coolant pump replacement
• Battery temperature sensor replacement
• Damaged wiring and connector issues
• Repair PCM and ECU programming faults

However, if you face any issue then we have stocked a wide range of best priced Hybrid battery Temperature Sensor Fan 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:

• The mechanic or the technician will use a diagnostic scanner or code reader like DVOM to visually scan for the error codes in the vehicle.
• After performing a careful inspection, every of the stored codes and freeze frame data are retrieved as it can help down the way for further diagnosis process.
• Most often he has to inspect the solenoid itself to see if they are faulty or damaged. Additional error codes that are stored in the vehicle are also addressed.
• The mechanic performs a continuity test between the PCM and solenoid to check the resistance.
• If the solenoid or the control modules are not faulty, he will then retune the code and test drive the vehicle.
• On test driving, if the P0BC2 code does not return soon, he will know that an erratic condition exits.
• But if the error returns instantaneously, he will check every component of the control module as well as the circuit like connectors, wires, harness, and fuses for any possible fault.
• If any component is damaged, he will fix them right away.
• After performing this repair, he will inspect the transmission fluid as well as its level.
• If the level is below the manufacturer’s specification, it has to be refilled and if the fluid is murky or contaminated it needs to be replaced.
• Every time a repair work is carried out, make sure that the mechanic test drives the vehicle after every repair so that the diagnosis is successful. This can eventually help him to know as to where the error occurred.

Common Mistakes When Diagnosing The P0BC2 Code

• Battery contactor assembly issues
• Hybrid Battery circuit issue
• Faulty battery harness and connectors
• Energy Control Module faults