← View Generic C0099 Guide Severity: Medium
🚗 Vehicle-Specific Guide

This guide is customized for your 2021 Honda PASSPORT

C0099: C0099: Brake System Malfunction

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 C0099 Mean on 2021 Honda PASSPORT?

This code indicates a malfunction in the brake system, such as a faulty brake sensor, a problem with the brake fluid level, or a faulty brake switch.
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Symptoms

  • • Spongy brake pedal
  • • low brake fluid level
  • • brake light on dashboard
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Common Causes

  • • Faulty brake sensor
  • • low brake fluid level
  • • faulty brake switch
  • • air in brake lines
  • • worn brake pads
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How to Fix C0099 on 2021 Honda PASSPORT

Check brake fluid level, replace brake fluid if necessary, inspect brake lines for air, replace faulty brake sensor or switch, replace worn brake pads

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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 Specs

Parts for 2021 Honda PASSPORT

brake sensor Shop ↗ brake fluid Shop ↗ brake switch Shop ↗ brake pads 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 C0099

C0097 Sequential Code

C0097: Wheel Speed Sensor Malfunction

Medium
C0098 Sequential Code

C0098: ABS System Malfunction

Medium
C0100 Sequential Code

C0100: Suspension Damper or Shock Absorber Fault

Medium
C0101 Sequential Code

C0101: Steering Column Position Sensor 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