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Severity: Medium
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Vehicle-Specific Guide
This guide is customized for your 2021 Honda PASSPORT
B1820: B1820: Seat Position Sensor 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 B1820 Mean on 2021 Honda PASSPORT?
The seat position sensor circuit has malfunctioned, preventing the vehicle's computer from accurately detecting the seat's position.
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Symptoms
- • Seat not moving properly
- • seat position not detected
- • seat warning light on
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Common Causes
- • Faulty seat position sensor
- • wiring issue
- • seat motor malfunction
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How to Fix B1820 on 2021 Honda PASSPORT
1. Disconnect battery to reset computer, 2. Check and clean seat position sensor, 3. Replace faulty sensor or wiring, 4. Test seat motor operation
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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 B1820
B1818
Sequential Code
B1818: Door Locks Actuator Malfunction
Medium
B1819
Sequential Code
B1819: Power Window Relay Circuit Malfunction
Medium
B1821
Sequential Code
B1821: Turn Signal Lamp Malfunction
Medium
B1822
Sequential Code
B1822: Immobilizer System 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