AutoCodes – Nissan – P0B65 Nissan

P0B65 Nissan Code - Hybrid Battery Voltage Sense 'I' Circuit Low

Quick Answer

The HV battery uses nickel metal-hydride batteries and does not require external charging. Common causes include Faulty Battery smart unit, Faulty HV battery assembly. 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: P0B65 Nissan indicates Hybrid Battery Voltage Sense 'I' Circuit Low.
Common causes: Common causes include Faulty Battery smart unit, Faulty HV battery assembly.
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 1,096

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 Mar 07, 2020

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code P0B65 Nissan Description

The HV battery uses nickel metal-hydride batteries and does not require external charging. The power management control ECU controls the SOC (state of charge) of the HV battery at a constant level during driving. The HV battery is composed of 28 modules, and each module consists of eight 1.2 V cells in series. The battery smart unit monitors battery block voltage at 14 locations. Each battery block is composed of 2 modules in a set. The battery smart unit, which monitors the voltage of the battery blocks, determines that malfunction has occurred if a voltage difference between the battery blocks exceeds the standard. When the malfunction detection condition is satisfied, the power management control ECU (HV CPU) will illuminates the Malfunction Indicator Lamp (MIL) and set a Diagnostic Trouble Code (DTC).

OBDII Code P0B65 Nissan - Hybrid Battery Voltage Sense 'I' Circuit Low - AutoCodes.com — P0B65 Nissan Code - Hybrid Battery Voltage Sense 'I' Circuit Low

What does this mean?

What are the Possible Causes of the DTC P0B65 Nissan?

Faulty Battery smart unit
Faulty HV battery assembly

How to Fix the DTC P0B65 Nissan?

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 P0B65 Nissan 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 P0B65 Nissan code?

Need more information on how to fix the P0B65 Nissan code? Get Access to Factory Service Manuals

Need Help with the Code?

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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 P0B65 Nissan Code

1. What are the common symptoms of OBDII code P0B65 in a Nissan hybrid vehicle?

The common symptoms of OBDII code P0B65 include the hybrid system warning light illuminating on the dashboard, reduced hybrid system performance, and potential issues with starting the vehicle.

2. What can cause the Hybrid Battery Voltage Sense 'I' Circuit Low error code in a Nissan hybrid?

The P0B65 code in a Nissan hybrid can be triggered by issues such as a faulty hybrid battery voltage sensor, damaged wiring or connectors in the voltage sense circuit, or a problem with the hybrid battery itself.

3. How serious is the Hybrid Battery Voltage Sense 'I' Circuit Low code in a Nissan hybrid?

While the vehicle may still be operable with the P0B65 code present, it is important to address the underlying issue promptly to prevent further damage to the hybrid system components and ensure optimal performance.

4. Can I continue driving my Nissan hybrid with the P0B65 error code?

It is not recommended to continue driving the vehicle with the P0B65 code present, as it can lead to potential issues with the hybrid system operation and may result in reduced efficiency and performance.

5. How can I diagnose and repair the Hybrid Battery Voltage Sense 'I' Circuit Low code in my Nissan hybrid?

Diagnosing and repairing the P0B65 code typically involves using a diagnostic scanner to identify the specific cause of the issue, inspecting the hybrid battery voltage sensor and related circuitry, and addressing any faulty components or connections.

6. Can a DIY enthusiast fix the Hybrid Battery Voltage Sense 'I' Circuit Low issue in a Nissan hybrid?

While some DIY enthusiasts may have the skills to diagnose and repair the P0B65 code, it is recommended to consult with a professional mechanic or hybrid specialist to ensure the issue is properly resolved and to prevent any further complications.

7. How much does it cost to fix the Hybrid Battery Voltage Sense 'I' Circuit Low code in a Nissan hybrid?

The cost of fixing the P0B65 code can vary depending on the specific cause of the issue, the extent of the repairs needed, and the labor rates of the service provider. It is advisable to obtain quotes from different repair shops for an accurate estimate.

8. Are there any preventative maintenance tips to avoid the Hybrid Battery Voltage Sense 'I' Circuit Low code in a Nissan hybrid?

To help prevent the P0B65 code from occurring, it is recommended to regularly inspect the hybrid system components, including the battery voltage sensor and related wiring, and address any issues promptly to maintain the system's health.

9. Can resetting the OBDII system clear the Hybrid Battery Voltage Sense 'I' Circuit Low code in a Nissan hybrid?

While resetting the OBDII system may temporarily clear the P0B65 code, it is important to address the underlying issue causing the fault code to prevent it from reoccurring. Simply clearing the code without fixing the problem may lead to further complications.

10. Is the Hybrid Battery Voltage Sense 'I' Circuit Low code covered under Nissan's warranty?

The coverage of the P0B65 code under Nissan's warranty depends on the specific terms and conditions of the vehicle's warranty agreement. It is advisable to consult the warranty documentation or contact a Nissan dealership for more information on coverage.