AutoCodes – Toyota – P3016 Toyota

P3016 Toyota 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 Toyota 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 8,898

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

What does this mean?

What are the Possible Causes of the DTC P3016 Toyota?

Faulty HV battery assembly
Faulty Battery ECU

How to Fix the DTC P3016 Toyota?

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 Toyota 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 Toyota code?

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

Need Help with the Code?

Get the P3016 Toyota 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 P3016 Toyota Code

1. What are common symptoms of OBDII code P3016 in a Toyota related to Battery Block 6 becoming weak?

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

2. What are the possible causes of OBDII code P3016 indicating Battery Block 6 weakness in a Toyota?

- Possible causes include a faulty battery cell in Block 6, a weak battery overall, corroded battery terminals, or issues with the charging system.

3. How can I diagnose the specific issue causing OBDII code P3016 in my Toyota related to Battery Block 6?

- Diagnose by checking the battery voltage, inspecting the battery terminals for corrosion, conducting a load test on the battery, and verifying the alternator output.

4. Can a weak Battery Block 6 cause other OBDII codes to trigger in a Toyota?

- Yes, a weak Battery Block 6 can cause related codes like P3015 (Battery Block 5 Weakness) and P3017 (Battery Block 7 Weakness) to trigger as well.

5. Is it safe to continue driving a Toyota with OBDII code P3016 related to a weak Battery Block 6?

- It is not recommended to drive the vehicle for an extended period with a weak battery block, as it can lead to further electrical system issues and potential breakdowns.

6. What are some repair tips for addressing OBDII code P3016 in a Toyota due to Battery Block 6 becoming weak?

- Repair tips include replacing the weak battery block, cleaning the battery terminals, checking the alternator function, and ensuring proper battery maintenance.

7. How long does it typically take to repair OBDII code P3016 in a Toyota caused by a weak Battery Block 6?

- The repair time can vary depending on the exact issue, but replacing a weak battery block and performing related checks usually takes around 1-2 hours.

8. Can a DIY enthusiast fix OBDII code P3016 related to Battery Block 6 weakness in a Toyota?

- DIY enthusiasts with some automotive knowledge and tools can address the issue by replacing the weak battery block and performing basic diagnostic checks.

9. Will resetting the OBDII system clear the P3016 code related to Battery Block 6 weakness in a Toyota?

- Resetting the OBDII system may temporarily clear the code, but it will reappear if the underlying issue with Battery Block 6 weakness is not addressed.

10. Are there any preventive measures to avoid OBDII code P3016 in a Toyota due to Battery Block 6 issues?

- Regularly checking and maintaining the battery, keeping terminals clean, and monitoring electrical system performance can help prevent Battery Block 6 weakness and related codes.