Engine-Codes - Toyota - P0A1D TOYOTA

P0A1D TOYOTA - Hybrid Powertrain Control Module

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

P0A1D TOYOTA 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 TOYOTA 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 TOYOTA code

Labor: 1.0

The cost to diagnose the P0A1D TOYOTA 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.
How much do you know about cars?

Take the AutoCodes.com automotive tests and turbo-charge your car repair knowledge

Play Now

When is the 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).

Possible Symptoms

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

P0A1D TOYOTA 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).

More Information

Need more information on how to fix the P0A1D TOYOTA code?
Get Access to Factory Service Manuals

Need more help?

Get the P0a1d Toyota code diagnosed by a professional: Find a repair shop in your area