Generator Motor Inverter Power Supply Voltage Low
Table of contents
P1F20 HONDA Possible Causes
- Faulty Voltage Control Unit (VCU)
- Voltage Control Unit (VCU) harness is open or shorted
- Voltage Control Unit (VCU) circuit poor electrical connection
- Faulty Motor Control Module (Generator)
How do I fix code P1F20 HONDA?
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 P1F20 HONDA code
The cost of diagnosing the P1F20 HONDA 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)
P1F20 HONDA Description
The Voltage Control Unit (VCU) monitors decrease in the supplied 12 volt power supply voltage at all times and sends the judgment result to the motor control module (generator) via serial communication. The motor control module (generator) detects a malfunction and stores a DTC when the 12 volt power supply voltage decrease judgment result is received from the VCU continuously for the prescribed time or more.