← View Generic B1594 Guide
Severity: Medium
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Vehicle-Specific Guide
This guide is customized for your 2021 Honda PASSPORT
B1594: B1594: Door Locks Actuator Circuit Malfunction
on 2021 Honda PASSPORT
Fix Cost
$100 - $300
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 B1594 Mean on 2021 Honda PASSPORT?
The Body Control Module (BCM) has detected a malfunction in the door lock actuator circuit, preventing the door locks from functioning properly.
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Symptoms
- • Door locks do not function
- • may be stuck or jammed
- • or may not respond to key fob or door switch inputs.
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Common Causes
- • Faulty door lock actuator
- • wiring issue
- • or BCM malfunction.
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How to Fix B1594 on 2021 Honda PASSPORT
1. Disconnect battery to reset BCM. 2. Check and repair or replace wiring as needed. 3. Test door lock actuator and replace if faulty. 4. Update BCM software 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.
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Essential Tool
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Related Diagnostic Codes
Other codes that may appear with B1594
B1592
Sequential Code
B1592: Airbag System Fault
High
B1593
Sequential Code
B1593: Climate Control Fan Motor Malfunction
Medium
B1595
Sequential Code
B1595: Power Window Relay Circuit Malfunction
Medium
B1596
Sequential Code
B1596: Seat Switch 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