Error Code P0C46: What It Means & What To Do?

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The trouble code P0C46 can be explained as Hybrid Battery Pack Coolant Temperature Sensor Circuit Intermittent/Erratic. This trouble code is generic, which would mean that it can apply to all the vehicles which are equipped with the OBD-II or the vehicles which are made since 1996 up to the present.

We believe that an investment in knowledge pays the best interest. So why not learn more about the P0C46 error code? The specifications on the definition, the troubleshooting steps as well as repairs can always vary from one vehicle make to another. The hybrid battery pack coolant temperature sensor circuit is being monitored by the engine control module. This trouble code would be set by the ECM when the hybrid battery pack coolant temperature sensor circuit would not be as per the specifications set by the manufacturer.

What causes this problem with the Hybrid Battery Pack Coolant Temperature Sensor Circuit Intermittent/Erratic?

• Faulty hybrid battery pack coolant temperature sensor
• Hybrid battery pack coolant temperature sensor harness is open or shorted
• Hybrid battery pack coolant temperature sensor circuit poor electrical connection

1. Battery Temperature Sensor - Faulty temperature sensor will not be able to interpret the battery temperatures which can cause overheating and leakages inside the battery that can cause harm to various components and can be dangerous to driver’s safety also. Thus, replace it at first instance.
2. Battery Coolant Pump - Battery coolant pump plays a vital role in keeping the battery pack cool while operating and keeping it from overheating. Thus, check and replace faulty pump as it can be the reason for temperature sensor indicating out of bound readings.
3. Engine Control Module - It is not always the components, but the ECM that can also be faulty. It can cause misinterpretation of correct data thus leading to wrong operational decisions which will affect the transmission and overall engine performance. Thus, replace faulty module and reprogram it now!
4. Powertrain Control Module - Powertrain Control Module can also be faulty in rare cases and thus needs through checks for system and software errors. Thus, check and replace it, if required.
5. Hybrid Battery - If the battery if at fault, it can also be the reason for battery overheating, which can lead to temperature sensor going out of specification. Buy new hybrid battery now!
6. Car Battery & Cables - Most of the time the battery cables and connectors are at fault for a particular component not functioning properly. Thus, the battery cable and connector should be checked for and replace in time.
7. Diagnostic Tools - It is always advisable to use correct tools and equipment while resolving any OBD code issue as even small mistakes can lead to wrong diagnosis. Thus, always take help from a professional who has the knowledge and experience to such tools in efficient manner. Buy new quality diagnostic tools from us today!

It is vital to know the symptoms of an issue as only then you would be able to solve the problem. So that’s why we have listed out some major symptoms of OBD Code P0C46 here:

Common Symptoms

• Appearance of the service engine soon light
• High voltage system might not run

Looking out for some ways with the help of which you can correct this fault code? Then you have arrived at the correct place. We are here to help you out, so you must check out the steps mentioned below as follows:

• It is essential to restore the flawed PCM/ECM
• Rehabilitate the defaults in the dash check engine light
• Carefully adjust the faults in the hybrid battery pack coolant temperature sensor circuit
• Recondition the non-functioning hybrid battery pack coolant temperature sensor harness
• Adjust the flawed hybrid battery pack coolant temperature sensor

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Here are some steps which you should follow in order to diagnose this fault code:

• As an initial step the mechanic will carefully inspect the vehicle with the help of a scanner.
• After this, the technician will connect a scanner to the diagnostic code so that he can recover all the codes and freeze frame data.
• Note down this information as it can clearly help for further diagnosis.
• After careful inspection, he will reset the code and test drive your vehicle to check for reappearance of the codes.
• He will know that an intermittent condition persist, if the code does not return instantly.
• But if the error code returns quickly, the vehicle is test driven, and then he has to inspect the hybrid battery pack coolant temperature sensor.
• If any of the component is damaged, the mechanic will replace them quickly.
• Most often, whenever the mechanic carries out any repair work, he will reset the code and test drive your car, to check if the codes return immediately. This can preferably help the mechanic to know what caused this error code in the vehicle.

Common Mistakes When Diagnosing The P0C46 Code

• Malfunctioning high voltage battery pack coolant temperature sensor
• There can be a failure in the battery energy control module
• Wiring problems