← View Generic C1604 Guide Severity: Medium
🚗 Vehicle-Specific Guide

This guide is customized for your 2021 Honda PASSPORT

C1604: C1604: 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 C1604 Mean on 2021 Honda PASSPORT?

The brake system has malfunctioned, possibly due to a faulty brake sensor or a problem with the brake fluid level. (Ford)
⚠️

Symptoms

  • • Brake pedal feels spongy
  • • brake light on dashboard
  • • unusual brake noise
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Common Causes

  • • Faulty brake sensor
  • • low brake fluid level
  • • clogged brake lines
  • • worn brake pads
🛠️

How to Fix C1604 on 2021 Honda PASSPORT

Check brake fluid level, replace brake sensor, clean or replace brake lines, replace 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 line cleaner Shop ↗ brake pads Shop ↗

Essential Tool

Must Have

OBD2 Scanner

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Related Diagnostic Codes

Other codes that may appear with C1604

C1602 Sequential Code

C1602: Wheel Speed Sensor Malfunction

Medium
C1603 Sequential Code

C1603: ABS System Malfunction

Medium
C1605 Sequential Code

C1605: Suspension Control Module (SCM) Fault

Medium
C1606 Sequential Code

C1606: 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