Guide To P0AE3 OBD Error Code Solutions

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What causes this error code to get stored in the vehicle? What does P0AE3 error code signify? The failure of the high voltage control module is generally known as the hybrid battery recharge contactor circuit stuck open. In order to tightly control the operation of the high voltage system, relays are being used by the high voltage control module. If the control module finds that, one or more relay is found to be faulty then the P0AE3 error will be set.

The SMR will attach and disable the high- voltage power supply circuit in correspondence to the request from the HV control ECU. To make sure that the operation is trustworthy you will find 3 relays 2 for positive and 1 for negative. Initially turn on SMR1 and SMR3 to attach them and simultaneously SMR2 will be on and SMR1 will be off. The high voltage surge current is protected by permitting less current to move through the resistor. SMR2 and SMR3 must be turned off to disable them. The proper turning off of the relays is examined by the HV control ECU. To look for any malfunction, the HV control ECU will look after the correct operation of SMRs (CON1, CON2, and CON3).

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

• The system main relay might be defective.
• There might be an opening in the system main relay or the circuit might be shorted.
• The electrical connection of the system main relay circuit might appear to be weak.
• Damaged HV control ECU.

1. Engine Control Module - Conditions of misfire shows that your ECM is faulty. Fix it as soon as possible to avoid the P0AE3 error in your vehicle by getting a new ECM from PartsAvatar.
2. Powertrain Control Module - Overheating of the PCM can likely damage your PCM. Change it quickly by getting a new PCM from PartsAvatar.
3. Battery Relay - ​The P0AE3 error code can be avoided when the faulty battery relay is replaced.
4. Battery Relay Harness - Do you want to get rid of the P0AE3 error code in your vehicle? Then replace the damaged battery relay harness.
5. Engine Control Unit - Does your engine stall very often? Then it’s a sign of a faulty engine unit which has to be replaced quickly to avoid further malfunctioning.

It is essential 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 P0AE3 here:

Common Symptoms

• Possible symptoms of a misfire.
• You might find the engine light or else the warning light of the service engine turned on.
• Performance by the engine is poor

Here are some ways with the help of which you will be able to correct the OBD Code P0AE3

• Replacing the faulty battery.
• Changing the engine control module/ powertrain control module which is damaged.

There is no need to be anxious as Parts Avatar – Car Parts Online is here to help you out! We have high-grade ECU, battery relay, a battery relay harness and a lot more for our precious customers.

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

• You will find the consumption of fuel to be more.
• You will receive interruptions from the PCM as square waveform patterns of varying degrees of voltage which is converted into transmission output speed.
• The resistance for this sensor will be approximately 150 ohms but ensure it is correct with the manufacturer’s specifications before you proceed with testing.
• You will need several tools to carefully diagnose this error code.
• This can actually help you to identify, if or not the malfunctioning is erratic.
• As you put your foot on the brakes of the car, you can likely expect your car to slow down or it might even come to a stop position.
• The amount of power that is applied on the brake pedal by your foot is aided with the help of hydraulic pressure.
• The force from your foot will engage with the piston and caliper where the brake pads are fixed (bonded abrasive and heat resistant metal or ceramic) so that you can apply pressure on the rotor.
• The OBD -II error code P0AE3 is usually related to the cam that is camshaft timing.
• In one such scenario, if the timing of the cam is over- retarded then the illumination of the check engine light will take place and the error code P0AE3 will get stored in the vehicle.

Common Mistakes When Diagnosing the P0AE3 Code

• Electrical wires might cause some issues
• Failure of the auxiliary 12V battery.
• High voltage system relay might be damaged.
• Improper functioning of the high voltage control module