AutoCodes – Generic – P3014

P3014 Code - Battery Block 4 Becomes Weak

Quick Answer

If there is an abnormal internal resistance or electromotive voltage in the hybrid battery blocks, the hybrid battery Electronic Control Unit (ECU) determines that a malfunction has occurred. Common causes include Faulty HV battery assembly, Faulty Battery ECU. 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: P3014 indicates Battery Block 4 Becomes Weak.
Common causes: Common causes include Faulty HV battery assembly, Faulty Battery ECU.
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 13,806

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 Jun 23, 2019

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code P3014 Description

If there is an abnormal internal resistance or electromotive voltage in the hybrid battery blocks, the hybrid battery Electronic Control Unit (ECU) determines that a malfunction has occurred. When the malfunction detection condition is satisfied, the battery ECU illuminates the MIL and sets a Diagnostic Trouble Code (DTC).

OBDII Code P3014 - Battery Block 4 Becomes Weak - AutoCodes.com — P3014 Code - Battery Block 4 Becomes Weak

What does this mean?

What are the Possible Causes of the DTC P3014?

Faulty HV battery assembly
Faulty Battery ECU

How to Fix the DTC P3014?

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 P3014 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 P3014 code?

Need more information on how to fix the P3014 code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the P3014 code diagnosed by a professional: Find a repair shop in your area

Information for Specific Makes

P3014 Lexus — Battery Block 4 Becomes Weak
P3014 Toyota — Battery Block 4 Becomes Weak

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 P3014 Code

1. What are the common symptoms of OBDII code P3014 (Battery Block 4 Becomes Weak)?

- Common symptoms include poor battery performance, difficulty starting the vehicle, and potential issues with the electrical system.

2. What are the possible causes of OBDII code P3014?

- The code may be triggered by a weak or failing battery in block 4 of the battery pack, loose connections, damaged wiring, or a faulty battery management system.

3. How can I diagnose OBDII code P3014 at home?

- You can start by checking the battery voltage in block 4 using a multimeter, inspecting the connections and wiring, and scanning for any other related trouble codes.

4. What are some repair tips for addressing OBDII code P3014?

- Consider replacing the battery in block 4 if it is weak or failing, ensure all connections are secure, repair any damaged wiring, and reset the trouble code to see if it reoccurs.

5. Can driving with OBDII code P3014 cause further damage to my vehicle?

- Continuing to drive with a weak battery in block 4 can lead to more severe electrical issues, potential stalling, and even damage to other components in the vehicle.

6. How do I reset OBDII code P3014 after making repairs?

- You can reset the trouble code using an OBDII scanner or by disconnecting the vehicle's battery for a few minutes to clear the vehicle's computer memory.

7. Is it safe to ignore OBDII code P3014 if my vehicle is still running fine?

- Ignoring the code can lead to unexpected breakdowns, electrical problems, and potentially costly repairs down the line, so it's best to address the issue promptly.

8. Are there any preventive measures to avoid OBDII code P3014 in the future?

- Regularly inspecting the battery pack, maintaining proper charging levels, and ensuring all electrical connections are secure can help prevent issues related to weak battery blocks.

9. Can a DIY enthusiast with basic automotive knowledge fix OBDII code P3014?

- Depending on the root cause, a DIY enthusiast may be able to address the issue by replacing the battery in block 4, checking connections, and performing basic wiring repairs.

10. How long does it typically take to repair OBDII code P3014?

- The repair time can vary based on the exact cause of the issue and the complexity of the repair. In general, it may take anywhere from 30 minutes to a few hours to address the problem.