Engine-Codes - Generic - P0A1D

P0A1D Code - Hybrid Powertrain Control Module

Repair Importance Level: 3/3
Repair Difficulty Level: 3/3
Table of contents

|P0A1D code possible causes

  • Faulty HV Control ECU
  • HV Control ECU harness is open or shorted
  • HV Control ECU circuit poor electrical connection

|How is the P0A1D 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 P0A1D code

Labor: 1.0

The cost to diagnose the P0A1D 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 P0A1D code detected?

The power management control ECU (HV CPU) monitors its internal operation, it will set DTCs and perform fail-safe control when it detects the following malfunctions. If any of the following DTCs are output, replace the power management control ECU (HV CPU).

|What are P0A1D code possible symptoms?

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

|What is P0A1D code meaning?

The HV control ECU performs diagnostic monitoring to verify proper operation of internal and external ECU systems. In this diagnostics monitor, the HV control ECU checks the REF signal from the motor main ECU
for errors.
If the HV control ECU detects an error in the REF signal, it will conclude that there is a malfunction in the motor main CPU, the REF signal or the HV control ECU. The HV control ECU illuminates the MIL and sets a Diagnostic Trouble Code (DTC).

|Need more information with the P0A1D code?

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|P0A1D code information for specific makes

|Need help with a P0A1D code?

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