Error Code P0C42: What It Means & What To Do?

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The trouble code P0C42 can be defined as Hybrid Battery Pack Coolant Temperature Sensor Circuit. The nickel metal-hydride batteries are used by the HV battery and there is no need of charging externally. The power management control ECU controls the SOC of the HV battery at a constant level while driving. There are 28 modules in the HV battery and every module would consist of eight 1.2 V cells in series. The battery block voltage at 14 locations is monitored by the battery smart unit. There are 2 modules in a set of every battery block.

It is always good to learn more! That is the reason why we are here to help you out in gaining more knowledge about the P0C42 error code. 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. The specifications on the definition, the troubleshooting steps as well as repairs can always vary from one vehicle make to another. This can happen because of a lot of reasons and the mechanic should diagnose the specific cause for this code.

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

• Defective hybrid battery pack coolant temperature sensor
• Hybrid battery pack coolant temperature sensor harness might be unlocked
• Hybrid battery pack coolant temperature sensor circuit bad electrical connection

1. Engine Control Module - Is your car engine light still staying ON after resetting or your car engine is turning off for no reason? Then these are some common symptoms indicating that your car engine control module is defective.
2. Hybrid Battery - Faulty hybrid battery may overheat or discharge quickly, causing drivability issues. It can affect the acceleration and throttle response and can also cause damage to various parts. Replace the faulty hybrid battery now!
3. Powertrain Control Module - The PCM works as the central computer system in an automobile’s mechanism. This auto part is the in charge of all the constituents as well as the functions performed by them. Having such enormous importance in the operation of all the parts means that any defect in it will affect almost every aspect of a car.
4. Electronic Control Unit - The ECU is a major component of your car's onboard computer. It's used to regulate many systems and subsystems in your car's engine, drive train and other major components. Visit us to buy best quality ECU online.
5. Diagnostic Tool - Find high grade diagnostic tools to detect the OBD error code from us. Visit us today to grab amazing deals.
6. Battery Temperature Sensor - Faulty temperature sensor can misinterpret the battery temperatures which can result in battery overheating and leakages inside the battery that can harm various components and can be dangerous to driver’s safety also. Thus, replace it at first instance.

Our main motive is to achieve customer satisfaction as for us our customers are everything and that’s why we will help you to diagnose P0C42 code by mentioning some major symptoms below:

Common Symptoms

• The service engine soon light can start lighting up
• Non-operational high voltage system

If you wish to correct this fault code, then you have to follow certain steps. Correcting a problem needs your careful attention. Here are some ways with the help of which you will be able to correct the OBD Code P0C42:

• You must fix the defective hybrid battery pack coolant temperature sensor harness
• Make sure to mend the faulty hybrid battery pack coolant temperature sensor
• It is essential to restore the flawed ECM/PCM
• Rehabilitate the defaults in the hybrid battery pack coolant temperature sensor circuit
• Carefully adjust the faults in the dash check engine light

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

• This is a general type of error code which is diagnosed with the help of a scanner.
• The mechanic will insert a scanner to diagnostic port of the vehicle and recover the codes and freeze frame data.
• If he happens to find any additional error codes, he has to address them as well.
• Once it is done, he has to reset the vehicle, and then test drive to see if the error code appears.
• If the error code does not return, then there can be an erratic condition.
• Then the mechanic has to check the wires, connectors and other electrical components and quickly replace them if he finds them to be damaged or defective.
• Check for the damaged hybrid battery and its components for error. It the mechanic finds the fault in the connectors in relation to the battery, replace it immediately.
• Also check for the particular battery cells emitting high voltages and thus might need battery replacement as well.
• Some smoke or steam might start getting emitted from underneath the car hood. The ignition timing could be set wrongly and there would be a need to adjust it properly. If, when looking under the hood, you notice that the drive belts appear loose, they need to be tightened or completely replaced.
• If you find out that there is a pool of fluid underneath the car, this could be a sign of failure in the cylinder head gasket. That will be confirmed in the form of billowing smoke being blown from the exhaust system.
• Parts or components should not be replaced with reference to only a P0C42 DTC. The vehicle service manual should be consulted for more information on possible causes of the fault, along with required testing.
• If all the components seem to work perfectly, inspect the PCM for faults and replacement along with reprogramming.

Common Mistakes When Diagnosing The P0C42 Code

• The battery energy control module might start failing
• Non observance of the high voltage battery pack coolant temperature sensor
• Some issues with the car wiring