← View Generic B1664 Guide
Severity: High
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Vehicle-Specific Guide
This guide is customized for your 2021 Honda PASSPORT
B1664: B1664: Airbag System Fault
on 2021 Honda PASSPORT
Fix Cost
$200 - $800
Parts & Labor
Difficulty
3/5
1-2 hours
DIY Possible?
❌ No
Pro recommended
Your Vehicle
2021 Honda
PASSPORT
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Important for 2021 Honda PASSPORT Owners
Before starting repairs, verify which engine your 2021 Honda PASSPORT has. Check your VIN or engine code to ensure you order the correct parts.
📖 What Does B1664 Mean on 2021 Honda PASSPORT?
The airbag system has detected a fault, which may be due to a malfunctioning sensor, wiring issue, or faulty airbag module.
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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
- • faulty airbag module
- • or software problem
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How to Fix B1664 on 2021 Honda PASSPORT
1. Check airbag sensor and wiring for damage or corrosion. 2. Update airbag module software. 3. Replace faulty airbag sensor or module if necessary.
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Need Maintenance Info for Your PASSPORT?
Get oil capacity, filter specs, and torque settings for your specific 2021 Honda PASSPORT.
View 2021 Honda PASSPORT SpecsParts for 2021 Honda PASSPORT
Essential Tool
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Related Diagnostic Codes
Other codes that may appear with B1664
B1662
Sequential Code
B1662: Body System Security Malfunction
Medium
B1663
Sequential Code
B1663: Audio System Malfunction
Medium
B1665
Sequential Code
B1665: Climate Control Fan Motor Malfunction
Medium
B1666
Sequential Code
B1666: Door Locks 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