Voltage Control Unit Overheating

Table of contents

P1F3C ACURA Possible Causes

  • Water pipe leak
  • Radiator fan
  • Faulty Voltage Control Unit (VCU)
  • Voltage Control Unit (VCU) harness is open or shorted
  • Voltage Control Unit (VCU) circuit poor electrical connection

How do I fix code P1F3C ACURA?

  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 P1F3C ACURA code

  The cost of diagnosing the P1F3C ACURA code is 1.0 hour of labor. The auto repair labor rates vary by location, your vehicle’s make and model, and even your engine type. Most auto repairs shops charge between $75 and $150 per hour.

Possible Symptoms

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

P1F3C ACURA Description

  The Voltage Control Unit (VCU) controls voltage and electric power between the battery module and the motor power inverter (MPI) module (traction/generator) according to the command from the motor control module (generator). The VCU measures high side and low side IGBT chip temperature within the VCU to detect overheating and sends overheating information to the motor control module (generator) via serial communication. The motor control module (generator) detects a malfunction and stores a DTC when the overheating information is received continuously for the prescribed time or more.


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