[SOLVED] P0A66 Code: Drive Motor ‘b’ Phase U Current – Causes And Fixes

The automobile fault code P0A66 indicates a problem with the Inverter With Converter Assembly.

The most common symptom is the Engine Light being ON or the Service Engine Soon Warning Light. This fault code can be caused by a faulty Inverter With Converter Assembly, an open or shorted harness, or a poor electrical connection in the circuit. To fix this issue, you should visually inspect the wiring harness and connectors for any damage.

Look for broken, bent, pushed out, or corroded pins in the connectors. The repair time for this fault code is estimated to be 1.0. It is important to address this issue promptly to prevent further damage to the vehicle’s electrical system.

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 p0a66 fault code.

  • The symptoms of the automobile fault code p0a66 include the Engine Light being ON or the Service Engine Soon Warning Light being illuminated.

The automobile fault code p0a66 can be caused by a faulty inverter with converter assembly, an open or shorted harness, or a poor electrical connection in the circuit.

  • The fault code p0a66 can be caused by a faulty Inverter With Converter Assembly, an open or shorted Inverter With Converter Assembly harness, or a poor electrical connection in the Inverter With Converter Assembly circuit.

To fix the p0a66 fault code, start by visually inspecting the wiring harness, connectors, and components for any damage or corrosion.

  • To fix the automobile fault code p0a66, 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 typically takes around 1.0 hour to complete.

The factors influencing the cost of diagnosing and fixing the automobile fault code p0a66 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 p0a66 fault code.

The P0A66 fault code refers to a malfunction in the sensor system of the drive motor ‘B’ phase U Cu. The inverter in the vehicle converts the high-voltage direct current from the HV battery and the alternating current for the MG1MG2.

The HV control ECU controls the power transistors in the inverter, which are responsible for converting the direct current and the three-phase alternating current.

The motor inverter current sensors detect the amperage that flows through the cables between the inverter and MG1MG2. The HV control ECU monitors these sensors and detects any malfunction in the sensor system, triggering the P0A66 fault code.

If you encounter this fault code, it is important to have the sensor system checked and repaired to ensure proper functioning of the drive motor ‘B’ phase U Cu.

What are the possible causes for the automobile fault code p0a66?

If you see the engine light or service engine soon warning light on, the fault code P0A66 could be the culprit. This code is often caused by a faulty inverter with converter assembly, an open or shorted harness, or a poor electrical connection in the inverter with converter assembly circuit. To fix this issue, start by visually inspecting the wiring harness and connectors. Look for any signs of damage or corrosion, and check for broken, bent, pushed out, or corroded pins in the connectors.

How can I visually inspect the wiring harness and connectors related to the Inverter With Converter Assembly?

To visually inspect the wiring harness and connectors related to the Inverter With Converter Assembly, start by checking the “Possible Causes” mentioned above. Then, carefully examine the wiring harness and connectors for any signs of damage. Look out for broken, bent, pushed out, or corroded pins on the connectors. This thorough inspection will help identify any issues and allow for timely repairs, ensuring the Engine Light or Service Engine Soon Warning Light is resolved.

What should I look for when checking for damaged components or corroded connector pins to fix the fault code p0a66?

When troubleshooting the fault code p0a66, 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. These issues can cause a poor electrical connection or an open or shorted circuit in the Inverter With Converter Assembly. By checking for these specific problems, you can effectively diagnose and fix the issue.

p0a66 error fault code explained

To fix the P0A66 fault code, start by visually inspecting the wiring harness and connectors related to the Inverter With Converter Assembly. Look for any damage or corrosion.

Check for broken, bent, or pushed out pins on the connectors.

Address any issues found to resolve the problem.

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