Engine-Codes - Toyota - P0A04 Toyota

P0A04 Toyota Code - Motor Electronics Coolant Temperature Sensor Circuit Intermittent

- Code Popularity: 1,830 Views
- Repair Importance Level: 3/3
- Repair Difficulty Level: 3/3
Table of contents
ChatAC AutoCodes.com AI Chat

What are the Possible Causes of the DTC P0A04 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 cooling system
  • Faulty Cooling fan system
  • Faulty Inverter with converter assembly
⚠ Does your Toyota have Safety Recalls? → Check here

How to Fix the DTC P0A04 Toyota?

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 pins.

Search for P0A04 Toyota Questions and Answers: Search here →

What is the Cost to Diagnose the Code?

Labor: 1.0

The cost to diagnose the P0A04 Toyota code is 1.0 hour of labor. The diagnosis time and labor rates at auto repair shops vary depending on the location, make and model of the vehicle, and even the engine type. Most auto repair shops charge between $75 and $150 per hour.

What are Code Possible Symptoms?

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

What Does the P0A04 Toyota Code Mean?

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.

P0A04 Toyota Code - Motor Electronics Coolant Temperature Sensor Circuit Intermittent

Need more Information on the Code?

Need more information on how to fix the P0A04 Toyota code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the P0A04 Toyota code diagnosed by a professional: Find a repair shop in your area