Engine-Codes - Lexus - P0A1C LEXUS

P0A1C LEXUS - Drive Motor 'B' Control Module

Repair Importance Level: 3/3
Repair Difficulty Level: 3/3  What is this?
Table of contents

P0A1C LEXUS Possible Causes

  • Faulty Inverter with converter assembly
  • Inverter with converter assembly harness is open or shorted
  • Inverter with converter assembly circuit poor electrical connection

How is the P0A1C LEXUS code repair?

Start by checking the "Possible Causes" listed above. Visually inspect the related wiring harness and connectors. Check for damaged components and look for broken, bent, pushed out, or corroded connector's pins.

What is the cost to diagnose the P0A1C LEXUS code

Labor: 1.0

The cost to diagnose the P0A1C LEXUS code is 1.0 hour of labor. The auto repair labor rates vary widely across the country, and even within the same city. Most auto repairs shops charge between $75 and $150 per hour.
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When is the code detected?

The MG ECU located in the inverter with converter assembly monitors its internal operation and it will set DTCs when it detects malfunctions.

Possible Symptoms

  • Engine Light ON (or Service Engine Soon Warning Light)

P0A1C LEXUS Meaning

The MG ECU (in the inverter with converter assembly) performs many diagnostic tests to verify proper operation of internal ECU systems. In one of those tests, the MG ECU checks the result of the motor CPU self-test. If the MG ECU detects a Fail from the motor CPU self-test, it will conclude that there is an internal malfunction in the motor CPU. The power management control ECU (HV CPU) will illuminate the MIL and set a DTC.

More Information

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