← View Generic B0574 Guide
Severity: Medium
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Vehicle-Specific Guide
This guide is customized for your 2021 Honda PASSPORT
B0574: B0574: 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 B0574 Mean on 2021 Honda PASSPORT?
The immobilizer system has detected a malfunction, preventing the engine from starting. This code is usually set when the immobilizer key fob battery is weak or dead.
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Symptoms
- • Engine won't start
- • key fob not recognized
- • or intermittent starting issues
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Common Causes
- • Weak or dead key fob battery
- • faulty immobilizer system
- • or incorrect key fob programming
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How to Fix B0574 on 2021 Honda PASSPORT
Replace the key fob battery, reprogram the key fob, or replace the immobilizer system module
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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 B0574
B0572
Sequential Code
B0572: Seat Position Sensor Circuit Malfunction
Medium
B0573
Sequential Code
B0573: Headlight Dimmer Switch Malfunction
Medium
B0575
Sequential Code
B0575: Audio System Malfunction
Medium
B0576
Sequential Code
B0576: 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