AutoCodes – Saturn – P1EFC Saturn

P1EFC Saturn Code - Battery Charger Control Module System Voltage Low Voltage

Quick Answer

The vehicle control modules or sensors monitor the system voltage to verify the system voltage is within the normal operating range. Common causes include Faulty Battery Charger Control Module, Battery Charger Control Module harness is open or shorted, Battery Charger Control 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: P1EFC Saturn indicates Battery Charger Control Module System Voltage Low Voltage.
Common causes: Common causes include Faulty Battery Charger Control Module, Battery Charger Control Module harness is open or shorted, Battery Charger Control 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 766

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 P1EFC Saturn Description

The vehicle control modules or sensors monitor the system voltage to verify the system voltage is within the normal operating range. The Powertrain Control Module (PCM) sets the OBDII code when the Battery Charger Control Module is not to factory specifications.

OBDII Code P1EFC Saturn - Battery Charger Control Module System Voltage Low Voltage - AutoCodes.com — P1EFC Saturn Code - Battery Charger Control Module System Voltage Low Voltage

What does this mean?

What are the Possible Causes of the DTC P1EFC Saturn?

Faulty Battery Charger Control Module
Battery Charger Control Module harness is open or shorted
Battery Charger Control Module circuit poor electrical connection

How to Fix the DTC P1EFC Saturn?

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 P1EFC Saturn 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 P1EFC Saturn code?

Need more information on how to fix the P1EFC Saturn code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the P1EFC Saturn 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 P1EFC Saturn Code

1. What does the OBDII code P1EFC for Saturn mean?

The code P1EFC indicates an issue with the Battery Charger Control Module System Voltage being too low in a Saturn vehicle.

2. What are the common symptoms of the P1EFC code in a Saturn?

Common symptoms include difficulty starting the vehicle, dimming lights, erratic electrical behavior, and potential warning lights on the dashboard.

3. What are the possible causes of the P1EFC code in a Saturn?

Causes can include a faulty battery charger control module, a weak battery, corroded battery terminals, damaged wiring, or issues with the vehicle's charging system.

4. How can I diagnose the P1EFC code in my Saturn?

To diagnose the issue, you can use an OBDII scanner to read the code, check the battery voltage, inspect the battery charger control module, and test the charging system components.

5. What repairs are typically needed for the P1EFC code in a Saturn?

Repairs may involve replacing the battery charger control module, installing a new battery, cleaning or replacing corroded terminals, repairing damaged wiring, or addressing issues with the charging system.

6. Can I drive my Saturn with the P1EFC code present?

It is not recommended to drive the vehicle with the P1EFC code active, as it can lead to further electrical problems and potential breakdowns.

7. How much does it cost to repair the P1EFC code in a Saturn?

Repair costs can vary depending on the exact cause of the issue, but it may range from a few hundred to over a thousand dollars, including parts and labor.

8. Is the P1EFC code specific to Saturn vehicles only?

Yes, the P1EFC code is specific to Saturn vehicles and relates to the Battery Charger Control Module System Voltage low voltage issue.

9. Can a DIY enthusiast fix the P1EFC code in a Saturn?

While some basic troubleshooting steps can be done by DIY enthusiasts, diagnosing and repairing the underlying cause of the P1EFC code may require professional automotive knowledge and tools.

10. How can I prevent the P1EFC code from appearing in my Saturn in the future?

To prevent the code from reoccurring, it's essential to maintain your vehicle's charging system, regularly check the battery and terminals, and address any electrical issues promptly.