← View Generic B1574 Guide
Severity: High
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Vehicle-Specific Guide
This guide is customized for your 2021 Honda PASSPORT
B1574: B1574: Immobilizer System Malfunction
on 2021 Honda PASSPORT
Fix Cost
$50 - $200
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 B1574 Mean on 2021 Honda PASSPORT?
The immobilizer system has detected a malfunction, preventing the vehicle from starting. This code is typically set when the immobilizer system is not functioning correctly, preventing the vehicle from starting.
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Symptoms
- • Vehicle will not start
- • immobilizer light on dashboard
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Common Causes
- • Faulty immobilizer module
- • faulty key fob
- • low battery in key fob
- • incorrect key fob programming
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How to Fix B1574 on 2021 Honda PASSPORT
1. Check key fob battery level and replace if necessary. 2. Try reprogramming the key fob. 3. Check immobilizer module for faults and replace 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 B1574
B1572
Sequential Code
B1572: Seat Switch Circuit Malfunction
Medium
B1573
Sequential Code
B1573: Exterior Lighting Malfunction
Medium
B1575
Sequential Code
B1575: Audio System Fault
Medium
B1576
Sequential Code
B1576: Airbag System Fault
High
💡 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