Engine-Codes - Toyota - P0A1B TOYOTA

P0A1B TOYOTA Code - Drive Motor 'A' Control Module

- Code Popularity: 4,052 Views
- Repair Importance Level: 3/3
- Repair Difficulty Level: 3/3
Table of contents

|What are the Possible Causes of the P0A1B TOYOTA Code?

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

|How to Fix the P0A1B TOYOTA Code?

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 P0A1B TOYOTA code?

Labor: 1.0

The cost to diagnose the P0A1B TOYOTA code is 1.0 hour of labor. The auto repair's diagnosis time and labor rates vary by location, vehicle's make and model, and even your engine type. Most auto repair shops charge between $75 and $150 per hour.

|When is the P0A1B TOYOTA 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.

|What are P0A1B TOYOTA code possible symptoms?

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

|What Does the P0A1B TOYOTA Code Mean?

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.

Drive Motor 'A' Control Module

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