AutoCodes – Lexus – P3014 Lexus

P3014 Lexus 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 Lexus 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 2,399

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

What does this mean?

What are the Possible Causes of the DTC P3014 Lexus?

Faulty HV battery assembly
Faulty Battery ECU

How to Fix the DTC P3014 Lexus?

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 Lexus 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.

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Need Help with the Code?

Get the P3014 Lexus 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 P3014 Lexus Code

1. What are common symptoms of OBDII code P3014 in a Lexus related to Battery Block 4 becoming weak?

- Common symptoms include reduced hybrid battery performance, decreased fuel efficiency, and possible warning lights on the dashboard.

2. What are possible causes of the Battery Block 4 becoming weak in a Lexus triggering code P3014?

- Causes may include a faulty battery cell in Block 4, issues with the battery management system, or excessive wear and tear on the hybrid battery.

3. How can I diagnose the specific issue causing OBDII code P3014 related to Battery Block 4 in my Lexus?

- Diagnosis typically involves using a compatible OBDII scanner to read the code, conducting a battery health check, and monitoring individual cell voltages within Block 4.

4. Is it safe to continue driving my Lexus with OBDII code P3014 indicating Battery Block 4 weakness?

- It is not recommended to drive extensively with this code present, as it can lead to further battery degradation and potential hybrid system malfunctions.

5. Can I repair the weak Battery Block 4 in my Lexus myself to resolve OBDII code P3014?

- Repairing a weak battery block may require specialized tools and expertise. It is advisable to seek professional assistance from a qualified technician or dealership.

6. How much does it typically cost to fix OBDII code P3014 related to Battery Block 4 in a Lexus?

- Repair costs can vary depending on the extent of the issue, but replacing a single battery block in a Lexus hybrid system can range from a few hundred to a few thousand dollars.

7. Are there any preventive maintenance tips to avoid OBDII code P3014 and Battery Block 4 issues in my Lexus hybrid?

- Regularly servicing the hybrid system, monitoring battery health, and avoiding extreme temperature conditions can help prevent Battery Block 4 weaknesses and related codes.

8. Can a weak Battery Block 4 affecting OBDII code P3014 cause other problems in my Lexus hybrid?

- Yes, a weak battery block can lead to decreased performance, potential damage to other battery components, and overall reduced efficiency of the hybrid system.

9. How long does it typically take to repair OBDII code P3014 related to Battery Block 4 in a Lexus?

- The repair time can vary depending on the exact cause and extent of the issue, but it may take a few hours to a day for a professional technician to diagnose and fix the problem.

10. Will resetting the OBDII code P3014 related to Battery Block 4 in my Lexus temporarily resolve the issue?

- Resetting the code may temporarily clear the warning light, but it will not fix the underlying problem causing the Battery Block 4 weakness. It is essential to address the root cause to prevent further issues.