← View Generic B0120 Guide
Severity: Medium
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Vehicle-Specific Guide
This guide is customized for your 2014 Nissan SENTRA
B0120: B0120: Airbag System Malfunction
on 2014 Nissan SENTRA
Fix Cost
$500 - $1500
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 B0120 Mean on 2014 Nissan SENTRA?
The airbag system has detected a malfunction, which may be due to a faulty sensor, wiring issue, or software problem.
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Symptoms
- • Airbag warning light on
- • airbag may not deploy in a crash
- • or airbag may deploy unexpectedly.
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Common Causes
- • Faulty airbag sensor
- • wiring issue
- • software problem
- • or a faulty airbag module.
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How to Fix B0120 on 2014 Nissan SENTRA
1. Check the airbag sensor and wiring for damage or corrosion. 2. Update the airbag system software. 3. Replace the airbag module if faulty.
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Need Maintenance Info for Your SENTRA?
Get oil capacity, filter specs, and torque settings for your specific 2014 Nissan SENTRA.
View 2014 Nissan SENTRA SpecsParts for 2014 Nissan SENTRA
Essential Tool
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Related Diagnostic Codes
Other codes that may appear with B0120
B0118
Sequential Code
B0118: Body System Security Malfunction
Medium
B0119
Sequential Code
B0119: Audio System Malfunction
Medium
B0121
Sequential Code
B0121: Climate Control Actuator Malfunction
Medium
B0122
Sequential Code
B0122: Door Locks Actuator Fault
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