AutoCodes – Nissan – P0B47 Nissan

P0B47 Nissan Code - Hybrid Battery Voltage Sense 'C' 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: P0B47 Nissan indicates Hybrid Battery Voltage Sense 'C' 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 1,839

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 P0B47 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 P0B47 Nissan - Hybrid Battery Voltage Sense 'C' Circuit Low - AutoCodes.com — P0B47 Nissan Code - Hybrid Battery Voltage Sense 'C' Circuit Low

What does this mean?

What are the Possible Causes of the DTC P0B47 Nissan?

Faulty Battery smart unit
Faulty HV battery assembly

How to Fix the DTC P0B47 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 P0B47 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.

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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 P0B47 Nissan Code

What does the OBDII code P0B47 mean on a Nissan?

The P0B47 code indicates a "Hybrid Battery Voltage Sense 'C' Circuit Low," meaning the vehicle's hybrid control module has detected a low voltage signal from the hybrid battery's voltage sensing circuit.

What are the common symptoms of code P0B47?

Symptoms may include a hybrid system warning light, reduced fuel efficiency, limited power output, or the vehicle entering a fail-safe or limp mode.

What causes the P0B47 code to appear?

Common causes include a faulty hybrid battery voltage sensor, damaged wiring or connectors in the voltage sensing circuit, or a malfunctioning hybrid battery control module.

Can a low hybrid battery charge cause the P0B47 code?

No, this code typically relates to a circuit issue, not the charge level of the hybrid battery itself.

How do I diagnose the P0B47 code on a Nissan?

Diagnosis involves checking the hybrid battery voltage sensor, inspecting wiring and connectors for damage or corrosion, and using a scan tool to monitor voltage readings from the hybrid battery system.

Can I continue driving with the P0B47 code?

It’s not recommended to drive for extended periods with this code active, as it can lead to further damage or reduced hybrid system performance.

How is the P0B47 code fixed?

Repairs may include replacing a faulty hybrid battery voltage sensor, repairing or replacing damaged wiring or connectors, or reprogramming or replacing the hybrid battery control module if necessary.

How much does it cost to fix the P0B47 code on a Nissan?

The repair cost varies depending on the issue, but it can range from $100 for minor wiring repairs to over $1,000 for sensor or module replacement.

Can a dead 12V battery trigger the P0B47 code?

A dead 12V accessory battery is unlikely to trigger this specific code, as it pertains to the hybrid battery voltage sensing circuit rather than the 12V system.

Do I need to replace the entire hybrid battery for a P0B47 code?

Not necessarily. The issue may be limited to the voltage sensing circuit, sensor, or related wiring, which can often be repaired without replacing the entire hybrid battery.