The automobile fault code P0AE3 indicates a problem with the System Main Relay.

This can be identified by the Engine Light being ON or the Service Engine Soon Warning Light appearing. The cause of this fault code could be a faulty System Main Relay, an open or shorted harness, a poor electrical connection in the relay circuit, or a faulty HV control ECU.

To fix this issue, it is recommended to visually inspect the wiring harness and connectors, checking for any damage or broken, bent, pushed out, or corroded pins in the connectors. The repair time for this issue is estimated to be 1.0. It is important to address this fault code promptly to prevent further damage to the vehicle.

Repair Importance Level10.0 (Out of 10)
Estimated Repair TimeApproximately 1.0 hour
Repair Difficulty Level10.0 (Out of 10)

When the engine light is on or the service engine soon warning light is illuminated, it could be a sign of the p0ae3 fault code.

  • The symptoms of the automobile fault code p0ae3 include the Engine Light being ON or the Service Engine Soon Warning Light being illuminated.

The automobile fault code p0ae3 can be caused by a faulty System Main Relay, an open or shorted System Main Relay harness, a poor electrical connection in the System Main Relay circuit, or a faulty HV control ECU.

  • The fault code p0ae3 can be caused by the following: a faulty System Main Relay, an open or shorted System Main Relay harness, a poor electrical connection in the System Main Relay circuit, or a faulty HV control ECU.

To fix the automobile fault code p0ae3, start by visually inspecting the wiring harness, connectors, and components for any damage or corrosion.

  • To fix the automobile fault code p0ae3, first, check the possible causes mentioned above.
  • Then, visually inspect the wiring harness and connectors related to the issue.
  • Look for any damaged components and check for broken, bent, pushed out, or corroded pins in the connectors.
  • The estimated repair time for this fix is 1.0 hour.

The factors influencing the cost of diagnosing and fixing the automobile fault code p0ae3 are the estimated repair time of 1.0 hour and the typical hourly rate charged by auto repair shops, which ranges from $75 to $150.

The P0AE3 fault code refers to a problem with the Hybrid Battery Precharge Contactor Circuit. This circuit is responsible for connecting and disconnecting the high-voltage power supply in the hybrid vehicle. The circuit consists of three relays, with two on the positive side and one on the negative side.

When connecting, SMR1 and SMR3 turn on initially, followed by SMR2. This process protects the circuit from high-voltage surge current.

When disconnecting, SMR2 and SMR3 turn off in that order. The HV control ECU monitors the proper operation of the relays to check for any malfunctions. If the P0AE3 fault code is detected, it means that there is an issue with the Hybrid Battery Precharge Contactor Circuit being stuck in the open position.

This can lead to problems with the high-voltage power supply and should be addressed promptly to ensure the proper functioning of the hybrid vehicle.

What are the possible causes for the automobile fault code P0AE3?

If you see the engine light or service engine soon warning light on, the fault code P0AE3 could be the culprit. This code is often caused by a faulty system main relay, an open or shorted relay harness, a poor electrical connection in the relay circuit, or a faulty HV control ECU. To fix the issue, start by visually inspecting the wiring harness and connectors. Look for any damaged components and check for broken, bent, pushed out, or corroded connector pins. Don’t forget to check the possible causes mentioned above.

How can I visually inspect the wiring harness and connectors to fix the P0AE3 fault code?

If you’re dealing with the P0AE3 fault code and notice that your engine light is on, it’s time to take action. The most common causes of this code are a faulty system main relay, an open or shorted relay harness, a poor electrical connection in the relay circuit, or a faulty HV control ECU. To fix the issue, start by visually inspecting the wiring harness and connectors. Look for any signs of damage, such as broken or bent pins, corrosion, or components that are out of place. This step is crucial in identifying and resolving the problem.

What should I look for when checking for damaged components and connector’s pins to resolve the P0AE3 fault code?

If you’re dealing with the P0AE3 fault code and your engine light is on, it’s time to roll up your sleeves and get to work. The culprit could be a faulty System Main Relay or a poor electrical connection in the System Main Relay circuit. To fix this issue, start by visually inspecting the wiring harness and connectors. Look out for any damaged components and check for broken, bent, pushed out, or corroded connector’s pins. Don’t forget to also check the “Possible Causes” listed above for a comprehensive solution.

p0ae3 error fault code explained

If you’re seeing the Engine Light ON or the Service Engine Soon Warning Light, the p0ae3 fault code might be the culprit. This code is usually caused by a faulty System Main Relay or issues with the relay’s harness and circuit connection.

To fix it, visually inspect the wiring harness and connectors, checking for any damage or corrosion. Look out for broken, bent, pushed out, or corroded pins on the connectors.

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