← View Generic B1340 Guide Severity: Medium

🚗 Vehicle-Specific Guide

This guide is customized for your 2021 Honda PASSPORT

B1340: B1340: Seat Switch Circuit Malfunction

on 2021 Honda PASSPORT

Fix Cost

$100 - $300

Parts & Labor

Difficulty

3/5

1-2 hours

DIY Possible?

✅ Yes

Save money

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 B1340 Mean on 2021 Honda PASSPORT?

The B1340 code indicates a problem with the seat switch circuit, which controls the seat's position, lumbar support, and recline functions.

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Symptoms

• Seat position or function not working correctly
• lumbar support or recline not adjusting
• seat may be stuck or unresponsive.

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Common Causes

• Faulty seat switch
• wiring issue
• or electrical connector problem.

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How to Fix B1340 on 2021 Honda PASSPORT

1. Disconnect the battery to reset the system. 2. Check and clean the seat switch and electrical connectors. 3. Replace the faulty seat switch if necessary. 4. Check and repair any wiring issues.

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Need Maintenance Info for Your PASSPORT?

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Parts for 2021 Honda PASSPORT

Seat switch Shop ↗ Electrical connector Shop ↗

Essential Tool

Must Have

OBD2 Scanner

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Related Diagnostic Codes

Other codes that may appear with B1340

B1338 Sequential Code

💡 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