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P0A03 Toyota Code - Motor Electronics Coolant Temperature Sensor Circuit High

- Code Popularity: 2,953 Views
- Repair Importance Level: 3/3
- Repair Difficulty Level: 3/3
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What are the Possible Causes of the DTC P0A03 Toyota?

NOTE: The causes shown may not be a complete list of all potential problems, and it is possible that there may be other causes.
  • Faulty Inverter with converter assembly
  • Inverter with converter assembly harness is open or shorted
  • Inverter with converter assembly circuit poor electrical connection
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How to Fix the DTC P0A03 Toyota?

Review the 'Possible Causes' mentioned above and visually examine the corresponding wiring harness and connectors. Ensure to check for any damaged components and inspect the connector pins for signs of being broken, bent, pushed out, or corroded.

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What is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the P0A03 Toyota code, it typically requires 1.0 hour of labor. The specific diagnosis time and labor rates at auto repair shops can differ based on factors such as the location, make and model of the vehicle, and even the engine type. It is common for most auto repair shops to charge between $75 and $150 per hour.

What are Code Possible Symptoms?

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

Code P0A03 Toyota Description

The power management control Electronic Control Unit (ECU) detects HV coolant temperature using the coolant temperature sensor built into the inverter with converter assembly. The power management control ECU uses signals from the coolant temperature sensor to check the effectiveness of the inverter cooling system. If necessary, the power management control ECU will limit inverter output to help prevent inverter overheating. The power management control ECU also detects malfunctions in the sensor based on the HV coolant temperature sensor values. The inverter with converter assembly detects malfunctions in the HV coolant temperature sensor and its wiring.

OBDII Code P0A03 Toyota - Motor Electronics Coolant Temperature Sensor Circuit High - AutoCodes.com
P0A03 Toyota Code - Motor Electronics Coolant Temperature Sensor Circuit High

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Code P0A03 Toyota comments

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