AutoCodes – Chevrolet – P1F59 Chevrolet

P1F59 Chevrolet Code - 14 Volt Power Module Status Terminal Circuit Performance

Quick Answer

The ECM uses two circuits to control and monitor the state of the 14V power module, often referred to as the accessory DC power control module. Common causes include Faulty 14 Volt Power Module, 14 Volt Power Module harness is open or shorted, 14 Volt Power Module 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: P1F59 Chevrolet indicates 14 Volt Power Module Status Terminal Circuit Performance.
Common causes: Common causes include Faulty 14 Volt Power Module, 14 Volt Power Module harness is open or shorted, 14 Volt Power Module 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 1,469

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 27, 2020

Description
Possible Causes
How To Fix
Tech Notes
Cost to Diagnose
FAQs
Comments
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Code P1F59 Chevrolet Description

The ECM uses two circuits to control and monitor the state of the 14V power module, often referred to as the accessory DC power control module.
The status circuit functions much like the F Terminal circuit on a generator equipped vehicle. A high side driver in the 14V power module applies a duty cycled voltage to the ECM. The duty cycle indicates 14V power module internal temperature and operational condition. The ECM will detect faults on the 14V power module status circuit when the vehicle is ON.

OBDII Code P1F59 Chevrolet - 14 Volt Power Module Status Terminal Circuit Performance - AutoCodes.com — P1F59 Chevrolet Code - 14 Volt Power Module Status Terminal Circuit Performance

What does this mean?

What are the Possible Causes of the DTC P1F59 Chevrolet?

Faulty 14 Volt Power Module
14 Volt Power Module harness is open or shorted
14 Volt Power Module circuit poor electrical connection

How to Fix the DTC P1F59 Chevrolet?

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 does this mean?

Code Tech Notes

There is a factory service bulletin for the 2016-2017 Volt. The factory recommends check for open fuse.
"This concern may be caused by an open 15 Amp fuse in the High Voltage Battery Disconnect Relay Assembly on the front part of the High Voltage Battery. If you experience one or more of the conditions above, check for an open 15A fuse in the Battery Disconnect Relay Assembly."

What is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the P1F59 Chevrolet 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.

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Need more information on how to fix the P1F59 Chevrolet code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the P1F59 Chevrolet code diagnosed by a professional: Find a repair shop in your area

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 P1F59 Chevrolet Code

1. What does the OBDII code P1F59 mean for a Chevrolet?

The code P1F59 indicates an issue with the 14 Volt Power Module Status Terminal Circuit Performance, which monitors the performance of the vehicle's electrical system.

2. What are the common symptoms of a P1F59 code?

Symptoms may include a check engine light, dimming or flickering lights, issues with charging the battery, and potential electrical system malfunctions.

3. What causes the P1F59 code to appear?

Common causes include a faulty 14-volt power module, damaged wiring or connectors in the circuit, a bad ground connection, or issues with the battery or alternator.

4. How is the P1F59 code diagnosed?

A technician will use a scan tool to confirm the code, inspect the wiring and connectors for damage, check the 14-volt power module, and test the alternator and battery performance.

5. Can I drive my vehicle with a P1F59 code?

While it may be possible to drive with this code, prolonged operation could lead to battery drainage or electrical issues, so itâ€™s best to address it promptly.

6. How do I fix a P1F59 code on my Chevrolet?

Repairs typically involve inspecting and repairing damaged wiring or connectors, replacing the 14-volt power module if faulty, or addressing issues with the alternator or battery.

7. Is the P1F59 code covered under warranty?

This depends on your vehicleâ€™s warranty and coverage terms. Check with your dealer or consult your warranty documentation.

8. What tools are needed to fix the P1F59 code?

Basic tools include a multimeter for testing circuits, a scan tool for diagnostics, and appropriate hand tools for accessing and repairing components.

9. How much does it cost to fix the P1F59 code?

Repair costs vary depending on the issue but can range from $150 to $500, depending on whether the power module, wiring, or other components need replacement.

10. Can a weak battery trigger the P1F59 code?

Yes, a weak or failing battery can cause this code by disrupting the performance of the 14-volt power module and electrical system.