AutoCodes – Generic – P1F3D

P1F3D Code - Voltage Control Unit Circuit Malfunction High

Quick Answer

The motor control module (generator) receives IGBT high side short-circuit information detected by the Voltage Control Unit (VCU) via serial communication and detects a malfunction and stores a DTC when the information is received continuously for the prescribed time or more. Common causes include Faulty Voltage Control Unit, Voltage Control Unit harness is open or shorted, Voltage Control Unit circuit poor electrical connection. Severity is High - diagnose this code as soon as possible. Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.

What it means: P1F3D indicates Voltage Control Unit Circuit Malfunction High.
Common causes: Common causes include Faulty Voltage Control Unit, Voltage Control Unit harness is open or shorted, Voltage Control Unit circuit poor electrical connection.
Severity: High - diagnose this code as soon as possible.
Can I drive?: Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.

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Code Popularity 1,179

How popular is this code, among other codes? Low

Repair Importance Level

Urgent (Diagnose now) (3 / 3)

Repair Difficulty Level

Advanced (Pro) (3 / 3)

What is this?

Table of contents Created and updated by William Orellana on Apr 25, 2020

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code P1F3D Description

OBDII Code P1F3D - Voltage Control Unit Circuit Malfunction High - AutoCodes.com — P1F3D Code - Voltage Control Unit Circuit Malfunction High

What does this mean?

What are the Possible Causes of the DTC P1F3D?

Faulty Voltage Control Unit
Voltage Control Unit harness is open or shorted
Voltage Control Unit circuit poor electrical connection

How to Fix the DTC P1F3D?

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

What is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the P1F3D code, it typically requires 1.0 hour of labor. Rates vary by location, vehicle, and shop. Many shops charge between $80–$150 per hour; dealerships and metro areas may be higher, independents may be lower.

Need more information about the P1F3D code?

Need more information on how to fix the P1F3D code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the P1F3D code diagnosed by a professional: Find a repair shop in your area

Information for Specific Makes

P1F3D Acura — Voltage Control Unit Circuit Malfunction High
P1F3D Honda — Voltage Control Unit Circuit Malfunction High

About the author: William Orellana is a Master Mechanic and Mechanical Engineer with over 30 years of experience diagnosing and repairing vehicles. Learn more about his background.

Frequently Asked Questions about P1F3D Code

1. What are the common symptoms of OBDII code P1F3D (Voltage Control Unit Circuit Malfunction High)?

Symptoms may include engine misfires, poor acceleration, rough idling, and illuminated Check Engine light.

2. What causes the OBDII code P1F3D to trigger?

The code P1F3D typically triggers due to a malfunction in the voltage control unit circuit, which may be caused by wiring issues, a faulty voltage control unit, or a problem with the power supply.

3. How serious is the P1F3D fault code?

While the P1F3D code itself may not cause immediate harm to the vehicle, it can lead to poor engine performance and reduced fuel efficiency if left unresolved.

4. Can driving with the P1F3D code illuminated damage the vehicle?

Continuing to drive with the P1F3D code may worsen engine performance over time and potentially lead to more severe issues if not addressed promptly.

5. How can I diagnose the P1F3D code?

Diagnosing the P1F3D code typically involves using an OBDII scanner to retrieve the specific trouble code and then inspecting the voltage control unit circuit for any visible damage or connectivity issues.

6. What are some DIY repair tips for the P1F3D fault code?

DIY repair options may include checking and repairing damaged wiring, replacing the faulty voltage control unit, or ensuring proper power supply to the unit.

7. Is it safe to continue driving with the P1F3D code pending?

It is generally not recommended to drive with any pending fault code, as it can lead to further damage and potentially more expensive repairs down the line.

8. How much does it typically cost to repair the P1F3D fault code?

The cost of repairing the P1F3D code can vary depending on the underlying issue, but it may range from a simple wiring repair to a more expensive voltage control unit replacement.

9. Can I reset the P1F3D code with an OBDII scanner?

Yes, you can use an OBDII scanner to reset the P1F3D code after addressing the underlying issue. However, if the problem persists, the code is likely to reappear.

10. How can I prevent the recurrence of the P1F3D code in the future?

Regular vehicle maintenance, such as checking wiring integrity and ensuring proper voltage control unit function, can help prevent the reoccurrence of the P1F3D fault code.