P0C84 - OBD Trouble Code
OBD Code P0C84 - Hybrid Battery Temperature Sensor "H" Circuit High
The OBD error code P0C84 usually occurs due to
wiring issue and is referred to as hybrid battery temperature sensor ‘H’
circuit high. The monitoring of the temperature of each battery cell is usually
done by the hybrid battery pack with the help of multiple sensors. The P0C84
error code will get stored in the vehicle if any one of the battery temperature
sensors reports an unlikely temperature. The high voltage system will be
disabled if the failure in the multiple sensors take place.
Learn More About OBD Error Code P0C84
You will find the battery temperature sensor in 3 places of the HV battery. The thermistor’s resistance is inbuilt in each battery temperature sensor and it will keep changing depending on the changes in the HV battery temperature. If the thermistor resistance is high, then the battery temperature will be low. Likewise, if the temperature is high, then the resistance will be low. The battery temperature sensor is used by the battery sensor unit so that it can find the HV battery temperature and then send the identified value to the power management control ECU. Depending on this result, the blower fan is then controlled by the power management ECU.
What causes this problem with the Hybrid Battery Temperature Sensor "H" Circuit High?
- The hybrid battery thermistor might be broken.
- The hybrid battery thermistor harness might either be shorted or you might see an opening in the circuit.
- Very poor electrical connection in the hybrid battery thermistor circuit.
- Battery smart unit might be faulty.
Replace/Repair These Parts To Fix Code P0C84
- Hybrid Battery Temperature Sensor - The battery light will start
illuminating if the hybrid battery temperature sensor is faulty. Replace it as
soon as possible so that the P0C84 error can be avoided.
- Hybrid Battery Pack - A damaged hybrid battery pack will
give rise to strange noises in the engine. In this situation, it’s always best
to replace the damaged hybrid battery pack.
- Engine Wiring Connectors - High temperature can cause the
corrosion of engine wiring connectors. Repair it as soon as possible.
- Battery Temperature Sensors - The temperature is measured by the
battery temperature sensor so that the voltage can be adjusted. You will have
to replace the battery temperature sensor if the voltage is high as it will
damage the battery temperature sensor.
- Battery Assembly - The performance of the engine will be poor if the battery
assembly is damaged. Repair it immediately to avoid P0C84 error.
- Battery Control Module - The battery control module looks
after the charging of the batteries. It is always best to replace your faulty battery
control module so that the P0C84 error code can be avoided.
- Battery Smart Unit - There will be a performance issue and
the illumination of MIL will take place if the battery smart unit is damaged.
Fix it as soon as possible.
- Powertrain Control Module - The engine will behave erratically
if the PCM is faulty. Get rid of the faulty PCM as soon as possible.
- Fan Blade - It will be difficult for the fan blades to generate the needed
airflow if it is damaged. In this situation, it is wise to replace the damaged
fan blades and get a new one from PartsAvatar.
- Engine Pulley - You will hear a squealing noise from the engine belt if the
engine pulley is faulty. Get it fixed instantly.
- VCT Solenoid - A decrease in fuel economy will occur if the VCT solenoid is
faulty. Replace/ repair the damaged VCT solenoid quickly.
Symptoms Of The OBD Error Code P0C84
Well, if you are looking to know about the common symptoms related to this error code P0C84, we are have worked out a small list to help you discover this error code with your vehicle.
Common Symptoms
- The service engine warning light and engine light will keep blinking and stays on.
How To Correct Hybrid Battery Temperature Sensor "H" Circuit High Issue?
It is very important to fix the fault code P0C84. So here are some ways with which you can correct this issue:
- The faulty hybrid battery thermistor must be altered.
- The broken battery smart unit must be fixed.
- The circuits or the harness of the hybrid battery thermistor which is defective has to be changed.
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Easy Diagnosis Of Engine Error OBD Code P0C84
Here are some steps which you should follow in order to diagnose this fault code P0C84:
- The mechanic will correctly diagnose the computer as well as its circuit problems by monitoring the operation of the vehicle as the vehicle is operated.
- If there is an unusual high exhaust temperature, pressure or noxious gas concentration which is detected by the PCM, the fuel injector will be activated after the treatment of the exhaust. After this, the reluctant compound will be sprayed on the DPF as well as the catalytic converter.
- Most of the vehicle applications will use this electronically controlled valve in the cooler lines of the automatic transmission so that the flow of fluid can be regulated to the cooler itself.
- Clear the codes and test drive the vehicle to see if the codes appear.
- If there is white smoke, then it means that the fuel that is inserted into the combustion chamber is not burnt properly.
- The cause for the presence of white smoke can range from a simple reason like the engine compression is low or the water that is present in the fuel and which is sent to the fuel pump timing is thrown off as there is something which makes the fuel to starve from getting inside of the pump in a similar manner which is essential for the pump to time and work accurately.
- You must not replace the parts or components only with reference to a P0C84 error code.
- For more information on the possible causes of the P0C84 error, you can verify the vehicle service manual along with the necessary testing.
Common Mistakes When Diagnosing The P0C84 Code
One common mistake which is made by the mechanic while diagnosing the P0C84 error is with the high voltage battery assembly, the electrical wires and high voltage battery interface control module which might be malfunctioning.