P0AE9 OBD Error Code: Problem & Solutions

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The high voltage control module failure is usually known as the hybrid battery temperature sensor "d" range/performance. Multiple sensors will be utilized to check the temperature of each battery cell by the hybrid battery pack. The P0AE9 error will be set, if an incorrect signal is found by one of the battery temperature sensors. Failure of the multiple sensors will likely disable the high voltage system.

The HV control ECU will use a temperature sensor, that is inbuilt in the inverter, to find the temperature of the motor inverter. The cooling system that is directed to MG1 and MG2 will cool down the inverter. The cooling system acts uniquely from the engine cooling system. The characteristics of the motor inverter temperature sensor and boost converter temperature sensor will be the same. The HV control ECU will reduce the load depending on the signals sent by the motor inverter temperature sensor to analyze the effectiveness of the inverter cooling system and to escape the inverter from overheating. Also, the HV control ECU will find a defect in the wiring of the motor inverter temperature sensor and the sensor itself.

What causes this problem with the Hybrid Battery Temperature Sensor "D" Range/Performance?

• The inverter with converter assembly might be broken.
• The inverter with converter assembly harness might either be shorted or you might see an opening in the circuit.
• The very poor electrical connection in the inverter with converter assembly circuit.
• Broken HV control ECU.

1. Engine Control Module - Conditions of misfire indicates that the ECM is faulty which needs replacement as soon as possible.
2. Powertrain Control Module - Does your engine turn off without any reason? Then it’s a high time to replace your PCM as it can be faulty.
3. Inverter /Converter Assembly - Inverters are used for a short time period so that a few of the devices can be powered which cannot be done efficiently with the help of a DC power. If you are looking for an inverter assembly for your vehicle, get them from PartsAvatar.
4. Inverter / Converter Assembly Harness - The inverter installation kit usually comes with wire cables and fuse connectors so that the inverter can be properly connected in the vehicle. Any damage to this inverter harness must be fixed soon to avoid further troubles.
5. Engine Control Unit - If the sensor circuit is shorted it will overload the engine and damage the ECM module. If you find the engine control module to be damaged get the replacement from Parts Avatar to avoid P0AE9 error.

For us our customers are everything, and that’s why we will help you to diagnose P0AE9 code by mentioning some important symptoms below:

Common Symptoms

• Fuel consumption might be high.
• Low engine performance.
• Indications of a misfire.
• You will notice either of the lights, that is the engine light or the warning light of the service engine turned on.

After 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 a few common steps to correct this issue with your vehicle’s.

• Altering the damaged inverter with converter assembly.
• The damaged engine control module/ powertrain control module has to be changed.

To do all this, you will need a few high-quality auto parts such as Inverter with Converter Assembly, Inverter With converter assembly harness, ECU and so on. From where will you get them? From your local store? Well, why go there when you can order quality parts with us while sitting in the comfort of your home. So, just browse through our website and order your needed parts today.

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

• This is a general type of diagnostic trouble code where the mechanic will use a scanner to identify the error code that is stored in the vehicle.
• This information can help the mechanic in finding the erratic conditions which may have helped for the code to be stored in the vehicle.
• With the help of DVOM, check for continuity as well as resistance in both the circuits if either the reference voltage or ground circuit is open.
• 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 is 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 the proper exchange of gas within the engine.
• P0AE9 error mostly appears due to camshaft (cam) timing.
• You will find the illumination of the check engine light and the code will be set if the camshaft (cam) timing is over-retarded

Common Mistakes When Diagnosing the P0AE9 Code

• Battery control module might be broken.
• Problematic wires.
• Faulty high voltage battery assembly.
• Failure of the high voltage control module