AutoCodes – Generic – P3016

P3016 Code - Battery Block 6 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: P3016 indicates Battery Block 6 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 16,061

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 P3016 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 P3016 - Battery Block 6 Becomes Weak - AutoCodes.com — P3016 Code - Battery Block 6 Becomes Weak

What does this mean?

What are the Possible Causes of the DTC P3016?

Faulty HV battery assembly
Faulty Battery ECU

How to Fix the DTC P3016?

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 P3016 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 P3016 code?

Need more information on how to fix the P3016 code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the P3016 code diagnosed by a professional: Find a repair shop in your area

Information for Specific Makes

P3016 Lexus — Battery Block 6 Becomes Weak
P3016 Toyota — Battery Block 6 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 P3016 Code

1. What are the common symptoms of OBDII code P3016 (Battery Block 6 Becomes Weak)?

- Common symptoms include decreased engine performance, reduced fuel efficiency, and potential difficulty starting the vehicle.

2. What are the possible causes of OBDII code P3016?

- Possible causes of this code include a weak or failing battery in Block 6 of the battery pack, corrosion on battery terminals, or issues with the battery management system.

3. How can I diagnose the cause of OBDII code P3016?

- Diagnosing the cause of P3016 involves testing the battery in Block 6, checking for corrosion on terminals, and using a diagnostic tool to analyze the battery management system's data.

4. Can I still drive my vehicle with OBDII code P3016 present?

- It is not recommended to drive your vehicle with this code active, as it can lead to further battery issues and potential performance issues.

5. What is the typical repair process for OBDII code P3016?

- The repair process often involves replacing the weak or failing battery in Block 6, cleaning any corrosion on terminals, and resetting the battery management system.

6. Are there any DIY tips for addressing OBDII code P3016?

- DIY tips include checking battery connections, ensuring proper battery maintenance, and following manufacturer guidelines for battery replacement.

7. How urgent is it to address OBDII code P3016?

- It is recommended to address this code promptly to prevent further battery damage and maintain optimal vehicle performance.

8. Can a weak battery in Block 6 cause other issues in my vehicle?

- Yes, a weak battery in Block 6 can cause various electrical system malfunctions, affect hybrid system performance, and potentially lead to more severe battery-related problems.

9. Is it possible for OBDII code P3016 to be a false alarm?

- While rare, false alarms for this code can occur due to intermittent battery issues or sensor malfunctions. It is still essential to investigate and address the code promptly.

10. How can I prevent OBDII code P3016 from recurring in the future?

- Preventive measures include regular battery maintenance, monitoring battery health, and addressing any issues promptly to avoid the code from reoccurring.