← View Generic C1721 Guide Severity: Medium
🚗 Vehicle-Specific Guide

This guide is customized for your 2021 Honda PASSPORT

C1721: C1721: Wheel Speed Sensor Malfunction

on 2021 Honda PASSPORT

Fix Cost
$150 - $300
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 C1721 Mean on 2021 Honda PASSPORT?

The wheel speed sensor malfunction code indicates a problem with the wheel speed sensor circuit, which can cause issues with anti-lock braking system (ABS) and traction control system (TCS) operation.
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Symptoms

  • • ABS and TCS warning lights on dashboard
  • • vehicle may vibrate or pull to one side during braking
  • • reduced traction control performance
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Common Causes

  • • Faulty wheel speed sensor
  • • wiring damage
  • • sensor connector corrosion
  • • faulty ABS/TCS module
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How to Fix C1721 on 2021 Honda PASSPORT

1. Disconnect battery to reset ABS/TCS module, 2. Inspect and clean sensor connector, 3. Replace faulty wheel speed sensor, 4. Check and repair wiring damage, 5. Update ABS/TCS module software (if necessary)

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Parts for 2021 Honda PASSPORT

Wheel speed sensor Shop ↗ Sensor connector Shop ↗ Wiring harness Shop ↗

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Related Diagnostic Codes

Other codes that may appear with C1721

C1719 Sequential Code

C1719: Electronic Stability Control (ESC) Malfunction

High
C1720 Sequential Code

C1720: Traction Control System Malfunction

Medium
C1722 Sequential Code

C1722: ABS System Malfunction

High
C1723 Sequential Code

C1723: Brake System Pressure 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