AutoCodes.com | All About OBDII Engine Codes
AutoCodes - Buick - P1EF3 Buick

P1EF3 Buick Code - Battery Charger High-Voltage Converter 1 Temperature Too High

- Code Popularity: 628 Views
- Repair Importance Level: 3/3
- Repair Difficulty Level: 3/3
Table of contents
Share on Facebook   Share on Twitter   Share on Linkedin

What are the Possible Causes of the DTC P1EF3 Buick?

NOTE: The causes shown may not be a complete list of all potential problems, and it is possible that there may be other causes.
  • Faulty Battery Charger
  • Battery Charger harness is open or shorted
  • Battery Charger circuit poor electrical connection
⚠ Does your Buick have Safety Recalls? → Check here

How to Fix the DTC P1EF3 Buick?

Review the 'Possible Causes' mentioned above and visually examine the corresponding wiring harness and connectors. Ensure to check for any damaged components and inspect the connector pins for signs of being broken, bent, pushed out, or corroded.

Search for P1EF3 Buick Questions and Answers: Search here →

What is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the P1EF3 Buick code, it typically requires 1.0 hour of labor. The specific diagnosis time and labor rates at auto repair shops can differ based on factors such as the location, make and model of the vehicle, and even the engine type. It is common for most auto repair shops to charge between $75 and $150 per hour.

What are Code Possible Symptoms?

  • Engine Light ON (or Service Engine Soon Warning Light)

Code P1EF3 Buick Description

The battery charger uses a liquid cooled cooling system which is cooled from the front of the vehicle. The hybrid electronic cooling system needs to be functioning properly for the battery charger to be able to meet its temperature requirements.
The hybrid/EV powertrain control module 2 monitors the battery charger temperature and verifies it is within its proper operating range. There is a temperature sensor that measures the overall temperature of the battery charger. Also, there are battery charger internal temperatures sensors that monitor for over-temperature conditions, that are for the voltage converter 1, voltage converter 2 and the voltage conditioner within the battery charger.

OBDII Code P1EF3 Buick - Battery Charger High-Voltage Converter 1 Temperature Too High - AutoCodes.com
P1EF3 Buick Code - Battery Charger High-Voltage Converter 1 Temperature Too High

Need More Information on the Code?

Need more information on how to fix the P1EF3 Buick code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the P1EF3 Buick code diagnosed by a professional: Find a repair shop in your area

Code P1EF3 Buick comments

Help us improve AutoCodes.com. Leave a comment below or tell us if the information above helps you fix the code. What are the symptoms on your vehicle for the P1EF3 Buick code? Have you replaced any parts?
Any information is appreciated. Thanks