P0AE6 OBD Error Code: Problem & Solutions

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Do you know how the P0AE6 error code gets stored in the vehicle? What are its causes and symptoms? You have landed in the right place for the information. Malfunctioning of the high voltage control module is called as hybrid battery recharge contactor control circuit low. Relays will be used for controlling the right operation of the high voltage system by the high voltage control module. P0AE6 error might get stored if one or more relays are found to be broken by the control modules.

In correspondence to the request from the HV control ECU, the SMR will connect and disconnect every of the high-voltage power supply circuit. To ensure that the operation is proper, 3 relays are found, 2 positive and 1 negative. If you want to connect, then SMR1 and SMR3 turn should be ON. To disable, turn off SMR3 and SMR3. The relays have to be turned off properly and it is checked by the HV control ECU and it also looks for the correct operation of SMRs (CON1, CON2, and CON3) to find any defects.

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

• Malfunctioning of the system main relay.
• The system main relay harness might have a short circuit or you might find an opening.
• The electrical connection might be poor in the circuit of the system main relay.
• Failure HV controls ECU.

1. Engine Control Module - Engine stalling is one of the symptoms for a defective ECM which needs replacement as soon as possible.
2. Powertrain Control Module - A faulty PCM can cause misfiring issues and the engine behavior might also be erratic. If your vehicle is causing misfiring issues, then it is because of a faulty powertrain control module. Shop them from PartsAvatar at best prices online.
3. Battery Relay - If you are looking to get rid of the P0AE6 error, then you must change the damaged battery relay as soon as possible.
4. Battery Relay Harness - Visually inspect your battery relay harness for possible damages and faults. If it is damaged, replace it immediately.
5. Engine Control Unit - Does your vehicle face issues while starting, then there is a high probability that the engine control unit is faulty which needs a quick replacement

Our main motive is to achieve customer satisfaction and that’s why we will help you to diagnose P0AE6 code by mentioning some major symptoms below:

Common Symptoms

• Flashing of the engine light or service engine will indicate you with a warning light.
• Engine performance might be weak.
• Fuel consumption is high.
• The engine might misfire.

Have a look at some ways with which you can correct the P0AE6 code:

• The damaged battery will need immediate fixation.
• Replacing the defective/ damaged powertrain control module and the engine control module.

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

• If you find any open, shorted, defective or corroded parts, replace them and recheck the system to make sure that the repair is successful.
• You will have to change the sensor if the resistance level does not decrease with heat and increases as it cools.
• Check for the presence of voltage, if every part works perfectly by turning on the key at the exhaust gas temperature/ pressure and the sensor electrical connector.
• With the help of a DVOM and oscilloscope make sure that the diagnosis is successful.
• The PCM can be defective if the fuel shut off switch and system circuits work perfectly.
• As you try to start the engine, if you hear a clicking noise and if the engine does not crank, then it means that the battery is faulty like discharged or low battery or the battery cables are free or eroded.
• But if you hear the engine cranking noise as you start the vehicle, but if it fails to start, then there can be an issue with the ignition or fuel.
• Other issues where the engine fails to start can be the fuel or ignition. Other common reasons an engine may fail to start include a failure of the starter motor relay, a clogged fuel filter, a defective fuel pump or an ignition switch failure.
• You must not change the component or parts with respect to P0AE6 error code alone.
• For more information on the possible causes of the error, you can refer the vehicle service manual along with the essential testing.

Common Mistakes When Diagnosing the P0AE6 Code

• The auxiliary 12V battery might be faulty.
• Electrical wiring issues.
• Defective high voltage system relay.
• High voltage control module might be damaged