Error Code P0AE1: What It Means & What To Do?

<<See All OBD Codes

P0AE1 error code arises due to the failure of a high voltage control module which is also generally known as the hybrid battery precharge contactor circuit. In order to govern the correct operation of the high voltage system, relays are used by the high voltage control module. If the relays are found are found to be faulty by the control module, then the P0AE1 error code will be set.

The system main relay will attach and detach the high voltage power supply as per the request from the HV control ECU. To ensure that the operation is consistent, there are 3 relays, 2 for positive and 1 for negative. Firstly, turn on SMR1 and SMR3 to attach them. Then, SMR2 will be on and SMR1 will off. This will maintain the circuit from high voltage flow current by letting less current to pass through the resistor. To deactivate, turn off SMR2 first and then SMR3. The turning off of the relays is rightly checked by the HV control ECU. The correct procedure of the SMRs (CON1, CON2 and CON3) is tested by the HV control ECU to validate any malfunctions.

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

• Defective system main relay.
• System main relay harness might have an opening or short circuit.
• System main relay circuit might have a weak electrical circuit.
• HV control ECU might be defective

1. Engine Control Module - Performance issue may arise in your vehicle if the ECM is defective. Replace the defective ECM by shopping for a new one from PartsAvatar.
2. Powertrain Control Module - Illumination of the check engine light is a common symptom of faulty PCM. Change it immediately.
3. Battery Relay - Fixing your faulty battery relay will help your engine to run smoothly. Get rid of it as soon as possible.
4. Battery Relay Harness - Are you looking for a replacement for your defective battery relay harness? Get it at affordable cost from PartsAvatar.
5. Engine Control Unit - Conditions of misfire indicates a defective engine control unit. Replace it as soon as possible by getting a new one from PartsAvatar to avoid the P0AE1 error.

Well, if you are looking to know about the common symptoms related to this error code P0AE1, we have worked out a small list to help you discover this error code with your vehicle.

Common Symptoms

• Signs of misfiring.
• Fuel consumption might be increased.
• The service engine warning light or else the engine light will stay on.
• Weak performance by the engine.

Once you know the symptoms of your vehicle’s problem, it becomes easy to detect it and get started with solving it. So, next on our list is few common steps to correct this issue with your vehicle’s

• Defective battery/ battery relay harness has to be changed.
• Powertrain control module and the engine control module has to be repaired.

If you need parts to fix this issue, you no longer need to search for them. We at PartsAvatar Canada have an extensive range of auto parts in stock from you, ranging from all replacement parts to all interior and exterior parts

It is essential to diagnose this fault code. Here are some steps which a mechanic should follow for diagnosing the problem that triggered a P0AE1 code to be stored:

• The service manual of the manufacturer is highly needed to perform this diagnosis.
• This will help you to know if or not the malfunction is irregular.
• Once the codes are cleared, test drive the vehicle to make sure the code does not return.
• With the help of a hydraulic pressure diagram, attach the end of the gauge into the correct opening on the transmission housing so that the pump pressure can be recorded.
• In this type of error code, as you accelerate the vehicle, you will hear very strange loud noises for instance like an explosion from the rear portion of the vehicle.
• You have to primarily check the carburetor to make sure that both the fuel and air combination are correctly adjusted.
• If each of these settings are perfect, carefully check the distributor cap for any cracks or splits as it can result in backfiring.
• Next, check the spark plugs if they are clean and defective free and then check the engine gaskets for any possible damages as they hold responsibility for proper exchange of gas within the engine.
• P0AE1 error might be related to faulty sensor. Replacing the sensor will not solve the issue.
• The error might appear even because of the sensor which monitors but can also pop up due to faulty wires to the sensor itself.
• If each of the circuits and sensors are in proper working condition, the PCM can be faulty and if it is replaced it must also be reprogrammed.

Common Mistakes When Diagnosing the P0AE1 Code

• Faulty auxiliary 12V battery.
• Troublesome electrical wires.
• High voltage system relay might be faulty.
• Failure of the high voltage control module