Engine-Codes - Generic - P0A02

P0A02 - Motor Electronics Coolant Temperature Sensor Circuit Low

Repair Importance Level: 3/3
Repair Difficulty Level: 3/3  What is this?

P0A02 Possible Causes

  • Faulty Motor Electronics Coolant Temperature Sensor
  • Motor Electronics Coolant Temperature Sensor harness is open or shorted
  • Motor Electronics Coolant Temperature Sensor circuit poor electrical connection

How do I fix code P0A02

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 P0A02 code

Labor: 1.0

The cost of diagnosing the P0A02 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.

Possible Symptoms

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

P0A02 Meaning

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.

P0A02 More Information

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Information for specific makes

  • P0A02 BUICK Starter/Generator Control Module Coolant Temperature Sensor 1 Circuit Low Voltage
  • P0A02 CADILLAC Starter/Generator Control Module Coolant Temperature Sensor 1 Circuit Low Voltage
  • P0A02 CHEVROLET Starter/Generator Control Module Coolant Temperature Sensor 1 Circuit Low Voltage
  • P0A02 DODGE Motor Electronics Coolant Temperature Sensor Circuit Low
  • P0A02 GMC Starter/Generator Control Module Coolant Temperature Sensor 1 Circuit Low Voltage
  • P0A02 LEXUS Motor Electronics Coolant Temperature Sensor Circuit Low
  • P0A02 SATURN Starter/Generator Control Module Coolant Temperature Sensor 1 Circuit Low Voltage
  • P0A02 TOYOTA Motor Electronics Coolant Temperature Sensor Circuit Low

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