P0AE4 - OBD Trouble Code

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What are the symptoms for P0AE4 error code? Are you looking for this information? Keep reading. The hybrid battery recharge contactor control circuit arises due to the defective high voltage control module. Internal resistors will be used for controlling the proper operation of the high voltage system by the high voltage control module. P0AE4 error will be stored if one or more relays are found to be faulty by the control modules

The connecting and disconnecting of the high voltage power supply are done by the system main relay with the requests from the HV control ECU. 3 relays are found, 2 for positive and 1 for negative to make sure that the operation is reliable. SMR1 and SMR3 must be turned on to connect them initially. And then, SMR2 will be off and SMR1 will be switched off. This procedure will protect the circuit from high voltage flow current by permitting the needed current to move through the resistor. First SMR1 and SMR3 will be turned off to disconnect them. SMRs (CON1, CON2, and CON3) are looked after by the HV control ECU to see for any defects in the system.

What causes this problem with the Hybrid Battery Precharge Contactor Control Circuit?

• The cylinder deactivation solenoid might be damaged.
• You will see an opening or short circuit in the cylinder deactivation solenoid harness.
• The bad electrical connection in the cylinder deactivation solenoid.
• You will notice that the HV control ECU might be faulty.

1. Engine Control Module - Does your car jump start on reverse polarity? It is an indication of damaged ECM. Repair / replace it soon to avoid P0AE4 error.
2. Powertrain Control Module - If you find the check engine light on the display dashboard, then the PCM is faulty. Replace it as soon as possible to avoid the P0AE4 error.
3. Battery Relay - Get the right replacement for your faulty battery relay from PartsAvatar at best prices online.
4. Battery Relay Harness - One of the easiest ways to get rid of the P0AE4 error in your vehicle is by changing the damaged battery relay harness.
5. Engine Control Unit - Engine light can be one possible symptom for a faulty engine control unit. Replacing the faulty ECU helps you to avoid the P0AE4 error.

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 P0AE4 here:

Common Symptoms

• Indications of misfiring.
• The service engine’s warning light and engine light will keep blinking and stays on.
• Use of fuel consumption might be more.
• Performance might be weak by the engine.

Want to correct the Trouble Code P0AE4? Read these points mentioned below:

• The damaged battery need fixation.
• Fixing the defective engine control module/ powertrain control module.

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It is essential to diagnose this fault code. Here are some steps which a mechanic should follow for diagnosing the problem that triggered a P0AE4 code to be stored:

• After repairs are performed, you might find the ground cables, straps were hanging.
• For electronic identification, many late model diesel fuel injectors are numbered individually.
• You will need many diagnostic tools to correctly diagnose this error code.
• 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 P0AE4 error code.
• For more information on the possible causes of the P0AE4 error, you can verify the vehicle service manual along with the necessary testing.
• One main thing with respect to the P0AE4 error is, you have to carefully confirm the operation of VCT solenoid.
• The VCT solenoid valve can be stuck if there is any contamination.
• In order to perform the component test, you can refer the repair manual specific to your vehicle for the VCT unit.

Common Mistakes When Diagnosing the P0AE4 Code

• An issue with the electrical wires.
• Defective auxiliary 12V battery.
• High voltage system relay might be broken.
• High voltage control module might be faulty.