P0A1B - Drive Motor 'A' Control Module

Repair Importance Level: 3/3
Repair Difficulty Level: 3/3   
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P0A1B Possible Causes

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

First diagnose P0A1B code

    Check 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.

Cost of diagnosing the P0A1B code

    Labor: 1.0

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

When is the P0A1B 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.

P0A1B Possible Symptoms

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

P0a1b Description

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.
OBDII Code P0a1b - Drive Motor 'A' Control Module - AutoCodes.com

P0A1B More Information

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P0A1B Information for specific makes

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