The automobile fault code P0AE4 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, you should 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 problem is estimated to be 1.0.

To interpret the fault code, you can refer to the “Possible Causes” listed above.

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 p0ae4 fault code.

  • The symptoms of the automobile fault code p0ae4 include the Engine Light being ON or the Service Engine Soon Warning Light being illuminated.

The automobile fault code p0ae4 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 p0ae4 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 p0ae4, start by visually inspecting the wiring harness, connectors, and components for any damage or corrosion.

  • To fix the automobile fault code p0ae4, 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.
  • This fix is estimated to take approximately 1.0 hour.

The factors influencing the cost of diagnosing and fixing the automobile fault code p0ae4 are the estimated repair time and the hourly rate charged by auto repair shops. The estimated repair time for this fault code is 1.0 hour. Auto repair shops typically charge between $75 and $150 per hour for their services.

These factors will determine the overall cost of diagnosing and fixing the p0ae4 fault code.

The P0AE4 fault code refers to the Hybrid Battery Precharge Contactor Control Circuit.

This code is related to the operation of the System Main Relays (SMRs) in the high-voltage power supply circuit.

The SMRs are responsible for connecting and disconnecting the high-voltage power supply circuit as per the requests from the HV control ECU. They consist of three relays, with one for the negative side and two for the positive side.

During the connection process, SMR1 and SMR3 initially turn on, followed by SMR2. This sequence helps protect the circuit from high-voltage surge current by allowing the limit current to flow through a resistor.

When disconnecting, SMR2 and SMR3 turn off in that order. The HV control ECU verifies that the relays have turned off properly to ensure the circuit’s safety.

The HV control ECU continuously monitors the proper operation of the SMRs (CON1, CON2, and CON3) to detect any malfunction.

If the P0AE4 fault code is triggered, it indicates an issue with the Hybrid Battery Precharge Contactor Control Circuit.

What are the possible causes for the automobile fault code p0ae4?

If you see the engine light or service engine soon warning light on, the fault code P0AE4 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 for a more accurate diagnosis.

How can I visually inspect the wiring harness and connectors to fix the p0ae4 fault code?

If you’re dealing with the p0ae4 fault code and your engine light is on, it’s time to take a closer look at the wiring harness and connectors. The possible causes include 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, visually inspect the wiring harness and connectors for any signs of damage. Pay attention to broken, bent, pushed out, or corroded pins on the connectors. This step will help you identify and address any issues with the electrical components.

What should I look for when checking for damaged components or corroded connector pins to resolve the p0ae4 fault code?

When resolving the p0ae4 fault code, start by checking for damaged components or corroded connector pins. This can be done by visually inspecting the related wiring harness and connectors. Look for any broken, bent, pushed out, or corroded pins on the connectors. By addressing these issues, you can effectively fix the problem and prevent further complications.

p0ae4 error fault code explained

If your engine light is on and you’re seeing the P0AE4 fault code, it could be due to a faulty System Main Relay or issues with the relay’s harness and circuit. To fix this, visually inspect the wiring harness and connectors for any damage. Also, check for broken, bent, pushed out, or corroded pins on the connectors.

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