← View Generic B0149 Guide Severity: Medium

🚗 Vehicle-Specific Guide

This guide is customized for your 2014 Nissan SENTRA

B0149: B0149: Body Control Module (BCM) Lighting Circuit Malfunction

on 2014 Nissan SENTRA

Fix Cost

$100 - $500

Parts & Labor

Difficulty

3/5

1-2 hours

DIY Possible?

❌ No

Pro recommended

Your Vehicle

2014 Nissan

SENTRA

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Important for 2014 Nissan SENTRA Owners

Before starting repairs, verify which engine your 2014 Nissan SENTRA has. Check your VIN or engine code to ensure you order the correct parts.

📖 What Does B0149 Mean on 2014 Nissan SENTRA?

The Body Control Module (BCM) has detected a malfunction in the lighting circuit, which may cause issues with the vehicle's exterior lights, such as the headlights, taillights, or turn signals.

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Symptoms

• Inoperable or flickering exterior lights
• warning lights on the dashboard
• or a malfunctioning lighting system.

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Common Causes

• Faulty BCM
• wiring issues
• blown fuses
• or a malfunctioning lighting module.

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How to Fix B0149 on 2014 Nissan SENTRA

1. Check the BCM for any error codes and clear them if necessary. 2. Inspect the wiring and connectors for any damage or corrosion. 3. Replace any blown fuses or faulty lighting modules. 4. Update the BCM software if necessary.

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Need Maintenance Info for Your SENTRA?

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Parts for 2014 Nissan SENTRA

BCM Shop ↗ wiring harness Shop ↗ fuses Shop ↗ lighting module Shop ↗

Essential Tool

Must Have

OBD2 Scanner

Read & clear codes on your 2014 Nissan SENTRA

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Related Diagnostic Codes

Other codes that may appear with B0149

B0147 Sequential Code

💡 Why These Codes Are Related:

• Similar Issues: Same root cause or component failure
• Related Problems: Often occur together due to system interactions
• Sequential Codes: Progressive failure stages or multiple sensors
• Same System: Components within the same automotive system