← View Generic B0129 Guide Severity: Medium
🚗 Vehicle-Specific Guide

This guide is customized for your 2021 Honda PASSPORT

B0129: B0129: Climate Control Module Fault

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 B0129 Mean on 2021 Honda PASSPORT?

The climate control module has detected a fault, which may be causing issues with the air conditioning or heating system.
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Symptoms

  • • Inconsistent air flow
  • • unusual noises
  • • or no air flow at all from the vents
  • • temperature fluctuations
  • • or error messages on the climate control display.
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Common Causes

  • • Faulty climate control module
  • • faulty temperature sensor
  • • clogged air ducts
  • • or a malfunctioning blower motor.
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How to Fix B0129 on 2021 Honda PASSPORT

1. Check the climate control module for any signs of physical damage or corrosion. 2. Inspect the temperature sensor for any signs of damage or malfunction. 3. Check the air ducts for any blockages or damage. 4. Test the blower motor to ensure it's functioning properly. 5. If necessary, replace the faulty component.

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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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Parts for 2021 Honda PASSPORT

climate control module Shop ↗ temperature sensor Shop ↗ air ducts Shop ↗ blower motor 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 B0129

B0127 Sequential Code

B0127: Audio System Fault

Medium
B0128 Sequential Code

B0128: Airbag System Fault

High
B0130 Sequential Code

B0130: Door Locks Actuator Circuit Malfunction

Medium
B0131 Sequential Code

B0131: Power Window Relay 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