← Back to Search Severity: High

B1520

B1520: Airbag System Fault

Fix Cost
$200 - $1000
Parts & Labor
Difficulty
4/5
Hard
1-2 hours
DIY Possible?
❌ No
Pro recommended
Category
Body
System

📖 What Does B1520 Mean?

The airbag system has detected a fault, which may prevent the airbags from deploying in the event of a crash. This code is often related to a faulty airbag sensor or wiring issue.
⚠️

Symptoms

  • • Airbag warning light on dashboard
  • • airbag system malfunction
  • • possible airbag deployment failure
🔍

Common Causes

  • • Faulty airbag sensor
  • • wiring issue
  • • blown fuse
  • • airbag module failure
Fix Guide
🛠️

Possible Solutions

1. Check airbag sensor and wiring for damage or corrosion. 2. Replace faulty airbag sensor or wiring. 3. Check and replace blown fuse. 4. Replace airbag module if necessary.

🚗

Fixing this on your car?

Get a vehicle-specific repair guide with exact parts, oil specs, and torque settings for your make and model.

Find My Car's Guide

🚙 Get Vehicle-Specific Fix Guide

Select your vehicle to see a customized repair guide with exact parts and specifications:

2021 Honda Passport 2014 Nissan Sentra 2017 Toyota Camry 2019 Ford F-150 2020 Chevrolet Silverado 2018 BMW X5
Don't see your vehicle? Browse all makes & models →

❓ Common Questions About B1520

Q

Can I drive with code B1520?

A

No, it is not recommended. Seeing code B1520 indicates a serious issue that could damage your engine or transmission if ignored. You should stop driving and have it inspected immediately.

Q

How much does it cost to fix B1520?

A

The estimated repair cost for code B1520 is between $200 and $1000. This includes parts and labor for most makes and models.

Q

Is this code easy to fix myself?

A

This repair is considered difficult. It may require specialized tools or significant disassembly. Professional help is recommended if you aren't an experienced DIYer.

Required Parts

Airbag sensor Shop ↗ Wiring harness Shop ↗ Fuse Shop ↗ Airbag module Shop ↗

Recommended Tools

Multimeter Search ↗ Wire tester Search ↗ Torx screwdriver Search ↗ Pliers Search ↗
👨‍🔧

Need a Pro?

Complex codes like B1520 can be tricky. Don't risk it if you're unsure.

📋

Recommended Tool

Essential for DIY

Professional OBD2 Scanner

Read & clear codes, view live data, and reset service lights yourself.

View Best Sellers ↗
🔗

Related Diagnostic Codes

Other codes that may appear with B1520

B1518 Sequential Code

B1518: Immobilizer System Malfunction

Medium
B1519 Sequential Code

B1519: Audio System Malfunction

Medium
B1521 Sequential Code

B1521: Climate Control Actuator Malfunction

Medium
B1522 Sequential Code

B1522: Door Locks Actuator Circuit Malfunction

Medium

💡 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