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Severity: Medium
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Vehicle-Specific Guide
This guide is customized for your 2021 Honda PASSPORT
B0641: B0641: Climate Control Temperature Sensor 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 B0641 Mean on 2021 Honda PASSPORT?
This code indicates a malfunction in the temperature sensor of the climate control system, which may cause inaccurate temperature readings or failure to maintain a set temperature.
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Symptoms
- • Inconsistent temperature readings
- • failure to heat or cool
- • unusual fan operation
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Common Causes
- • Faulty temperature sensor
- • wiring issues
- • climate control module malfunction
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How to Fix B0641 on 2021 Honda PASSPORT
1. Check and clean the temperature sensor; 2. Inspect and repair or replace wiring as needed; 3. Test and replace the climate control 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.
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Essential Tool
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Related Diagnostic Codes
Other codes that may appear with B0641
B0639
Sequential Code
B0639: Audio System Malfunction
Medium
B0640
Sequential Code
B0640: Airbag System Fault
High
B0642
Sequential Code
B0642: Door Locks Actuator Malfunction
Medium
B0643
Sequential Code
B0643: Power Window Motor 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