AutoCodes – Saturn – P1EFA Saturn

P1EFA Saturn Code - Battery Charger High-Voltage Converter 1 Input Current Too High

Quick Answer

The hybrid/EV powertrain control module 2 monitors the battery charger high-voltage output and current output and ensures they are within the proper range. Common causes include Faulty Battery Charger, Battery Charger harness is open or shorted, Battery Charger 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
P1EFA Saturn indicates Battery Charger High-Voltage Converter 1 Input Current Too High.
Common causes
Common causes include Faulty Battery Charger, Battery Charger harness is open or shorted, Battery Charger 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.
AI answers can be wrong. Verify repairs with testing. Open full chat
Code Popularity 811
How popular is this code, among other codes? Low
Table of contents Created and updated by William Orellana on Apr 25, 2020
πŸ’¬ Need more help? Ask Coddy for instant answers β€” it's free!

Code P1EFA Saturn Description

The hybrid/EV powertrain control module 2 monitors the battery charger high-voltage output and current output and ensures they are within the proper range. The battery charger operates in either a constant current mode or a constant voltage mode. Whichever mode you are in will determine which diagnostic will be run. The battery charger runs constant voltage mode at the beginning and end of the charge cycle and runs constant current mode most of the charging cycle.
OBDII Code P1EFA Saturn - Battery Charger High-Voltage Converter 1 Input Current Too High - AutoCodes.com
P1EFA Saturn Code - Battery Charger High-Voltage Converter 1 Input Current Too High

What are the Possible Causes of the DTC P1EFA Saturn?

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

How to Fix the DTC P1EFA 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 P1EFA 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 P1EFA Saturn code?

Need more information on how to fix the P1EFA Saturn code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the P1EFA 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 P1EFA Saturn Code

1. What are the common symptoms of OBDII code P1EFA in a Saturn vehicle?

- Common symptoms include the Check Engine light illuminating, reduced vehicle power, and potential issues with the high-voltage system.

2. What could cause the OBDII code P1EFA in a Saturn indicating "Battery Charger High-Voltage Converter 1 Input Current Too High"?

- Possible causes include a fault in the high-voltage converter, issues with the battery charger, high-voltage wiring problems, or a problem with the high-voltage battery itself.

3. How serious is the OBDII code P1EFA in a Saturn related to the high-voltage converter input current being too high?

- This code should be addressed promptly as it indicates a potential issue with the high-voltage system, which can impact the vehicle's performance and safety.

4. What are some repair tips for addressing OBDII code P1EFA in a Saturn?

- It's recommended to have a professional diagnose and repair this issue, as it involves high-voltage components that require specialized knowledge and tools.

5. Can I continue driving my Saturn if the OBDII code P1EFA is triggered?

- It's not advisable to continue driving the vehicle with this code active, as it may lead to further damage to the high-voltage system or impact the vehicle's performance.

6. How can I reset the OBDII code P1EFA in a Saturn after the issue has been addressed?

- The code can be cleared using an OBDII scanner or by disconnecting the vehicle's battery for a few minutes. However, it's important to ensure the underlying issue has been resolved before clearing the code.

7. Is it safe to attempt DIY repairs for OBDII code P1EFA in a Saturn?

- Due to the complexity of high-voltage systems in modern vehicles, it's best to leave diagnosis and repairs for this code to trained professionals to ensure safety and proper resolution.

8. What are the potential risks of ignoring the OBDII code P1EFA in a Saturn?

- Ignoring this code can result in damage to the high-voltage system, decreased fuel efficiency, and potential safety hazards related to the vehicle's electrical components.

9. How can I prevent the OBDII code P1EFA from appearing in my Saturn in the future?

- Regular maintenance and inspections of the high-voltage system, including the converter, charger, and wiring, can help prevent issues that trigger this code.

10. What is the typical cost to repair OBDII code P1EFA in a Saturn at a dealership or repair shop?

- Repair costs for this code can vary depending on the specific issue, but it's recommended to budget for potentially higher expenses due to the complexity of the high-voltage system in Saturn vehicles.

Discuss the causes and fixes for P1EFA Saturn OBDII Code

Code P1EFA Saturn comments

No comments found for this page.

AutoCodes App

Fix Your Car Smarter

Try the New AutoCodes App!

Get complete OBDII diagnostics, repair solutions, and cost estimates, plus AI chat support on demand.

AutoCodes App on Google Play