← View Generic B1629 Guide Severity: Medium
🚗 Vehicle-Specific Guide

This guide is customized for your 2021 Honda PASSPORT

B1629: B1629: Body Control Module (BCM) Malfunction - Lighting

on 2021 Honda PASSPORT

Fix Cost
$100 - $500
Parts & Labor
Difficulty
3/5
1-2 hours
DIY Possible?
❌ No
Pro recommended
Your Vehicle
2021 Honda
PASSPORT
⚠️

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 B1629 Mean on 2021 Honda PASSPORT?

The Body Control Module (BCM) has detected a malfunction in the lighting system, which may cause issues with the vehicle's exterior lights, such as the headlights, taillights, or turn signals.
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Symptoms

  • • Dim or inoperative exterior lights
  • • flickering lights
  • • or lights that do not turn off when the ignition is turned off.
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Common Causes

  • • Faulty BCM
  • • wiring harness damage
  • • blown fuse
  • • or a malfunctioning lighting module.
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How to Fix B1629 on 2021 Honda PASSPORT

1. Check the BCM for any fault codes and clear them if necessary. 2. Inspect the wiring harness for any damage or corrosion and repair or replace as needed. 3. Check the fuses and replace any blown ones. 4. Test the lighting module and replace it if faulty.

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Need Maintenance Info for Your PASSPORT?

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Parts for 2021 Honda PASSPORT

BCM Shop ↗ wiring harness Shop ↗ fuses Shop ↗ lighting module Shop ↗

Essential Tool

Must Have

OBD2 Scanner

Read & clear codes on your 2021 Honda PASSPORT

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Related Diagnostic Codes

Other codes that may appear with B1629

B1627 Sequential Code

B1627: Power Window Relay Circuit Malfunction

Medium
B1628 Sequential Code

B1628: Seat Switch Circuit Malfunction

Medium
B1630 Sequential Code

B1630: Body Control Module (BCM) Security System Malfunction

Medium
B1631 Sequential Code

B1631: Audio System Fault

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