AutoCodes – Generic – P1EFF

P1EFF Code - Battery Charger Input Power Up Protection Circuit Performance

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: P1EFF indicates Battery Charger Input Power Up Protection Circuit Performance.
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 997

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 P1EFF 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 Diagnostic Trouble Code (DTC) information. This DTC is for the battery charger are internal measurements that verify the charger is performing properly. The battery charger measures internal voltages, currents, and temperatures and verifies they are within the proper range.

OBDII Code P1EFF - Battery Charger Input Power Up Protection Circuit Performance - AutoCodes.com — P1EFF Code - Battery Charger Input Power Up Protection Circuit Performance

What does this mean?

What are the Possible Causes of the DTC P1EFF?

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

How to Fix the DTC P1EFF?

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 P1EFF 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 P1EFF code?

Need more information on how to fix the P1EFF code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the P1EFF code diagnosed by a professional: Find a repair shop in your area

Information for Specific Makes

P1EFF Buick — Battery Charger Input Power Up Protection Circuit Performance
P1EFF Cadillac — Battery Charger Input Power Up Protection Circuit Performance
P1EFF Chevrolet — Battery Charger Input Power Up Protection Circuit Performance
P1EFF GMC — Battery Charger Input Power Up Protection Circuit Performance
P1EFF Saturn — Battery Charger Input Power Up Protection Circuit Performance

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 P1EFF Code

1. What are common symptoms of OBDII code P1EFF?

The common symptoms of code P1EFF include a Check Engine light illuminated on the dashboard, poor vehicle performance, and issues with starting the vehicle.

2. What does the OBDII code P1EFF indicate?

Code P1EFF indicates a malfunction in the Battery Charger Input Power Up Protection Circuit Performance.

3. What are the possible causes of code P1EFF?

Possible causes of code P1EFF include a faulty battery charger, damaged wiring or connectors in the power up protection circuit, or issues with the power management system.

4. How serious is OBDII code P1EFF?

Code P1EFF can affect the performance and reliability of the vehicle, so it is recommended to address the issue promptly to prevent further damage.

5. How can I diagnose OBDII code P1EFF?

Diagnosing code P1EFF usually involves using an OBDII scanner to retrieve the code, checking the battery charger and related components for any visible damage, and testing the power up protection circuit for proper functioning.

6. Can I still drive my vehicle with code P1EFF?

It is not recommended to drive the vehicle with code P1EFF, as it can lead to further electrical issues and potential damage to the vehicle's systems.

7. How can I repair OBDII code P1EFF?

Repairing code P1EFF may involve replacing the faulty battery charger, repairing or replacing damaged wiring or connectors, and ensuring proper functioning of the power management system.

8. Are there any DIY tips for fixing OBDII code P1EFF?

DIY tips for fixing code P1EFF include checking for loose connections, ensuring the battery charger is securely connected, and inspecting the power up protection circuit for any visible damage.

9. How much does it cost to repair OBDII code P1EFF?

The cost of repairing code P1EFF can vary depending on the extent of the damage and the parts that need to be replaced. It is advisable to consult a professional mechanic for an accurate estimate.

10. Can resetting the OBDII system clear code P1EFF?

Resetting the OBDII system may temporarily clear the code, but if the underlying issue is not addressed, the code is likely to reappear. It is essential to diagnose and repair the root cause of code P1EFF for a permanent solution.