P0A04 - OBD Trouble Code

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What does intermittent mean with respect to P0A04 error code? What are the symptoms if this error code is stored in the vehicle? Do these questions pop-up in your mind? Keep reading. The system will experience an intermittent condition if there is an irregular signal which is detected by the PCM. In this scenario, the P0A04 error code gets stored in the vehicle.

The engine control unit (ECU) which manages the power identifies the faults or malfunctioning of the sensor depending on the high voltage coolant temperature sensor values and it also finds the high voltage coolant temperature by using the coolant temperature sensor. The coolant temperature sensor is inbuilt in the inverter combined with converter assembly. The inverter which has the inbuilt converter assembly identifies the error in the coolant temperature sensor and wires. The signal from the coolant temperature sensor is used by the ECU to examine as to how effective the inverter cooling system works. If it is necessary, the engine control unit will restrict the output to the inverter so that overheating of the engine is prevented to a certain extent.

What causes this problem with the Motor Electronics Coolant Temperature Sensor Circuit Intermittent?

• The motor electronics coolant temperature sensor might not work properly.
• Presence of a short circuit or an opening in the motor electronics coolant temperature sensor harness.
• Weak electrical connection in the motor electronics coolant temperature sensor circuit.

1. Electronic Control Unit - Carefully check the engine control unit for any possible damages. If they are defective, replace them quickly.
2. Engine Coolant Temperature Sensor - Visually inspect the engine coolant temperature sensor. If it is damaged, replace them as soon as possible.
3. Variable Camshaft Timing Solenoid - The P0A04 error code can be avoided if the defective variable camshaft timing solenoid is instantly changed.
4. Cylinder Head Gasket - P0A04 error code can get stored in your vehicle if this component is broken or damaged. Find the replacement for cylinder head gasket from Parts Avatar at best prices online.
5. Powertrain Control Module - A faulty or damaged powertrain control module can make your engine system misbehave. Replace the faulty PCM quickly.
6. Engine Wires - A broken or damaged engine wires have to be replaced with new ones or repaired to avoid the P0A04 trouble code.

If you are facing OBD error code P0A04, then there are significant common symptoms that can be felt or observed. We have worked out a list here to help you out in understanding this problem better.

Common Symptoms

• The engine will start overheating.

Learn the ways with which you can correct this trouble code:

• The engine system, in combination with other components like electronic control unit, coolant temperature sensor, VCT solenoid, cylinder head gasket, powertrain control module, will initiate the P0A04 code solenoid valve so that it can control the oil pressure that enters the engine mechanism. The engine mechanism is fitted in the valve system so that it can switch the timing of the switch valve between low and high. A diagnostic trouble code will be stored in your vehicle if there is an opening or short circuit in the engine solenoid valve.

However, if you face any issue then we have stocked a wide range of best priced electronic control unit, coolant temperature sensor, VCT solenoid, cylinder head gasket, powertrain control module, engine wires and more to help you out in fixing your car.

It is essential to diagnose this fault code. Here are some steps which a mechanic should follow for diagnosing the problem that triggered a P0A04 code to be stored:

• This is a general type of diagnostic trouble code which appears the same for each make and model.
• Generally, the technician will use a scanner to find out if there are any error codes stored in the vehicle. But for an advanced process, he may use an advanced scan tool like Autohex to find out the exact fault in the system.
• This trouble code is generally related to CEL, that is check engine light which signifies that the efficiency of the catalyst system is very low than the expected threshold.
• Or in other words, it can be simply said that the presence of air in the car is more than what is supposed to be present in the vehicle.
• If the problem still persists despite several diagnoses, the mechanic will check for this problem.
• Once the diagnosis is fully done, the mechanic will reset the code and try to test drive the vehicle to see if the engine overheats or if the check engine light illuminates.
• This process will eventually help the mechanic to know as to where the actual fault arises.

Common Mistakes When Diagnosing the P0A04 Code

• The malfunctioning of the coolant temperature sensor which has a high voltage.
• The powertrain control module is damaged or broken (PCM).
• The electrical wires are damaged which in turn causes some issues.