[SOLVED] P0A42 Code: Fixing Drive Motor ‘a’ Position Sensor Circuit High

The automobile fault code P0A42 indicates a problem with the hybrid system. The most common symptom is the Engine Light being ON or the Service Engine Soon Warning Light. The possible causes include a faulty inverter with converter assembly, hybrid vehicle generator assembly, motor assembly, or a wire harness or connector issue.

To fix this, you should visually inspect the wiring harness and connectors for any damage.

Look for broken, bent, pushed out, or corroded pins on the connectors. The repair time for this issue is estimated to be around 1.0. It is important to address this fault code promptly to ensure the proper functioning of the hybrid system.

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

If you see the Engine Light ON or the Service Engine Soon Warning Light, it could be a sign of the p0a42 fault code.

  • The symptoms of the automobile fault code p0a42 include the Engine Light being ON or the Service Engine Soon Warning Light being illuminated.

The fault code p0a42 can be caused by a faulty inverter with converter assembly, hybrid vehicle generator assembly, motor assembly, or wire harnessconnector.

  • The fault code p0a42 can be caused by a faulty inverter with converter assembly, a faulty hybrid vehicle generator assembly, a faulty hybrid vehicle motor assembly, or a problem with the wire harness or connector.

To fix the automobile fault code p0a42, start by visually inspecting the wiring harness, connectors, and components for any damage or corrosion.

  • To fix the automobile fault code p0a42, start by checking 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 on 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 p0a42 include the estimated repair time of 1.0 hour and the typical hourly rate charged by auto repair shops, which ranges between $75 and $150.

The P0A42 fault code refers to a problem with the Drive Motor ‘A’ Position Sensor Circuit. The resolver is a sensor used to detect the position of the magnetic poles in the motor generator. It consists of a stator with an excitation coil and two detection coils (S, C).

As the rotor turns, the gap between the stator and rotor changes due to the oval shape of the rotor. The resolver outputs alternating currents based on the rotor’s position.

The MG ECU, or inverter with converter assembly, uses these signals to detect the absolute position of the rotor and calculate changes in position over time.

If the MG ECU detects a high circuit in the Drive Motor ‘A’ Position Sensor, it triggers the P0A42 fault code.

What are the possible causes of the automobile fault code p0a42?

If you see the engine light or service engine soon warning light on, the fault code P0A42 could be the culprit. This code is often caused by a faulty inverter with converter assembly, hybrid vehicle generator assembly, hybrid vehicle motor assembly, or a problem with the wire harness or connector. To fix it, 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 fault code p0a42?

If you’re dealing with the fault code p0a42 and your engine light is on, it’s time to take a closer look at the wiring harness and connectors. The possible causes could be a faulty inverter with converter assembly, hybrid vehicle generator assembly, motor assembly, or a problem with the wire harness or connector. To fix this issue, visually inspect the wiring harness and connectors for any signs of damage. Check for broken, bent, pushed out, or corroded pins on the connectors. Don’t forget to examine the components as well.

What should I look for when checking for damaged components or broken, bent, pushed out, or corroded connector’s pins to resolve the fault code p0a42?

When resolving the fault code p0a42, start by visually inspecting the wiring harness and connectors. Look for any damaged components and check for broken, bent, pushed out, or corroded connector’s pins. This will help identify any issues with the inverter with converter assembly, hybrid vehicle generator assembly, hybrid vehicle motor assembly, or wire harness. By thoroughly examining these areas, you can pinpoint the cause of the problem and proceed with the necessary fix.

p0a42 error fault code explained

If you’re seeing the Engine Light ON or the Service Engine Soon Warning Light, the possible cause could be a faulty Inverter with converter assembly, Hybrid vehicle generator assembly, Hybrid vehicle motor assembly, or a wire harness or connector issue. To fix it, visually inspect the wiring harness and connectors for any damage, and check for broken, bent, pushed out, or corroded connector pins.

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