Error Code P0C74: What It Means & What To Do?

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Error code P0C74? Wondering on how to start? Well, all you need is this brief Parts Avatar guide that’ll definitely help you crack the error code P0C74. This generic OBD-II code high voltage control module failure is also referred as a motor electronics coolant pump "B" control performance. There is a water pump installed in the inverter/converter assembly for its cooling system. The power management control module (HV CPU) electronically regulates and controls the water pump. The code P0C74 is stored when a malfunction is detected by the HV CPU in the water pump.

It should be noted that the inverter water pump assembly constantly conveys the rotation speed information to the power management control ECU (HV CPU). Also, one can observe that the power management control ECU (HV CPU) performs the task of controlling the speed and also identifies the errors.

What causes this problem with the Motor Electronics Coolant Pump "B" Control Performance?

• A distorted inverter cooling system
• Disconnected or shorted inverter cooling system harness
• A powerless electrical connection in the inverter cooling system circuit
• A possible fault in the inverter water pump assembly
• Power management control ECU failure

1. High Voltage Control Module - Facing the error code P0C74? A malfunctioning high voltage control module can always be hazardous for the system also it is one of the primal causes behind the occurring of the error code P0C74. Apart from this an overall degradation in the performance of engine might follow too. Tune into Parts Avatar for supreme quality high voltage control module at economical prices.
2. Motor - Excessive noises and vibrations accompany a failure in the motor. Now get your error code P0C74 fixed instantly with a new motor. Tune into Parts Avatar for your brand-new motor offered at prices you had always been looking for.
3. Electric Coolant Pump - it should be noted that in order to run cool on hot summer days, the engine needs to have a consistent flow of coolant supplied from the radiator throughout the engine. The electric coolant pump regulates this flow. Apart from this electronic coolant pump leads to rusting, build up and corrosion around the system. It is advised to get yours changed from Parts Avatar now.
4. Inverter - Whomsoever the inverter fails, one is likely to experience a fall in the MPG. Apart from this, a defective in the inverter is likely to trigger symptoms that may lead to an unusual MPG. in addition to these the driver is likely to observe a high mileage. So, in order to prevent expensive repairs, we recommend you to change the inverter right away from Parts Avatar.
5. Converter - A clogged or damaged converter can be problematic. Apart from minor issues it often leads to misfiring conditions and a significant disbalance in the fuel mixture too. So if you want to save a lot of your dollars from being blown away, repair or replace it as soon as possible from Parts Avatar.
6. Water Pump - It should be noted that a malfunction in the water pump can trigger a complete failure in the engine. In addition to this, a leakage in the coolant can also be caused. We recommend you to mend or restore a a water pump immediately in order to overcome the problems caused by the error code P0C74.

Have you ever wondered why is it 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 few common symptoms of OBD error code P0C74.

Common Symptoms

• At times, the high voltage system temperature light may light up

We have listed out some ways which would help you to correct the occurrence of OBD Code P0C74. They are mentioned here as follows:

• Firstly, a visual inspection should be performed of all the electrical components. Repair or replace a faulty inverter cooling system
• Amendments should be performed to fix a malfunctioning inverter water pump assembly
• Make sure to restore or repair a poor electrical connection in the inverter cooling system circuit
• Any corroded or loose harness in the inverter cooling system should be changed or repaired according to the requirements
• Mend or restore a defective power management control ECU

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Here are some steps which you should follow in order to diagnose this fault code P0C74:

To begin the diagnosis, the first step of the mechanic should be using a scanner (or code reader) and a digital volt/ohmmeter as these will be helpful in successfully diagnosing this code-storing condition. Next, it is essential to you diagnose with a visual inspection of system wiring, connectors, and components. It is recommended to restore or mend any open, shorted, damaged, or corroded items as required and retest the system to make sure that repairs were successful. If the system wiring, connectors, and components appear to be in normal working order, connect the scanner to the diagnostic connector and record all stored trouble codes and freeze frame data. Also, repair or replace system circuits/connectors as required and retest the system to ensure that repairs were successful.

Common Mistakes When Diagnosing The P0C74 Code

Wanting to correct the error code P0C74? Well, all you need to do is avoid a few common mistakes that should carefully be avoided while performing the procedure:

• A possible failure in the high voltage control module
• A malfunctioning inverter/converter water pump
• Also, wiring issues throughout the system