AutoCodes – Chevrolet – P1EFD Chevrolet

P1EFD Chevrolet Code - Battery Charger Power Efficiency

Quick Answer

The battery charger will diagnose its own systems and determine when a fault condition is present. 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: P1EFD Chevrolet indicates Battery Charger Power Efficiency.
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.

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Code Popularity 903

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 P1EFD Chevrolet Description

The battery charger will diagnose its own systems and determine when a fault condition is present. Diagnostics and system status is communicated from the battery charger to the hybrid/EV powertrain control module 2 through serial data. The hybrid/EV powertrain control module 2 is the host controller for DTC information.

OBDII Code P1EFD Chevrolet - Battery Charger Power Efficiency - AutoCodes.com — P1EFD Chevrolet Code - Battery Charger Power Efficiency

What does this mean?

What are the Possible Causes of the DTC P1EFD Chevrolet?

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

How to Fix the DTC P1EFD 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 is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the P1EFD 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.

Need more information about the P1EFD Chevrolet code?

Need more information on how to fix the P1EFD Chevrolet code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the P1EFD 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 P1EFD Chevrolet Code

1. What are common symptoms of OBDII code P1EFD in a Chevrolet related to battery charger power efficiency?

- Common symptoms may include reduced charging performance, slower battery charging, or intermittent charging issues.

2. What are possible causes of OBDII code P1EFD in a Chevrolet indicating battery charger power efficiency problems?

- Possible causes may include a faulty battery charger, poor electrical connections, damaged wiring, or a defective battery.

3. How can I diagnose the OBDII code P1EFD in a Chevrolet related to battery charger power efficiency?

- Diagnose the issue by checking the battery charger's connections, testing the charger's output voltage, inspecting the wiring for damage, and verifying the battery's condition.

4. Can a bad battery cause the OBDII code P1EFD to trigger in a Chevrolet?

- Yes, a bad or weak battery can contribute to the code triggering as it may not hold a charge properly or provide sufficient power for the charger.

5. What repair tips can help resolve the OBDII code P1EFD in a Chevrolet associated with battery charger power efficiency?

- Repair tips may include replacing the battery charger if defective, repairing any damaged wiring, ensuring proper electrical connections, and replacing the battery if necessary.

6. How important is it to address the OBDII code P1EFD in a Chevrolet related to battery charger power efficiency promptly?

- It is important to address the issue promptly to prevent potential battery charging problems, which can lead to vehicle starting issues or electrical system malfunctions.

7. Can I continue to drive my Chevrolet with the OBDII code P1EFD indicating battery charger power efficiency concerns?

- It is not recommended to drive the vehicle with unresolved charging issues as it may lead to battery failure and possible stalling or starting problems.

8. Are there any safety precautions to consider when working on the OBDII code P1EFD in a Chevrolet linked to battery charger power efficiency?

- Safety precautions include disconnecting the battery, following proper electrical handling procedures, and using caution when working with battery chargers to avoid electric shock or fire hazards.

9. How can regular maintenance help prevent the OBDII code P1EFD from appearing in a Chevrolet due to battery charger power efficiency issues?

- Regular maintenance such as checking the battery's health, inspecting the charger, and ensuring proper electrical connections can help prevent charging issues and the code from triggering.

10. Can a DIY enthusiast troubleshoot and fix the OBDII code P1EFD in a Chevrolet related to battery charger power efficiency?

- Depending on the individual's skills and knowledge, a DIY enthusiast may be able to troubleshoot and fix the issue by following proper diagnostic procedures and repair guidelines.