← View Generic C3721 Guide
Severity: Medium
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Vehicle-Specific Guide
This guide is customized for your 2021 Honda PASSPORT
C3721: C3721: Electronic Stability Control (ESC) 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
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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 C3721 Mean on 2021 Honda PASSPORT?
The Electronic Stability Control (ESC) system has detected a malfunction, which may cause reduced traction and stability control.
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Symptoms
- • Vibrations
- • loss of traction
- • reduced braking performance
- • and/or reduced acceleration
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Common Causes
- • Faulty ESC sensor
- • wiring issue
- • or software problem
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How to Fix C3721 on 2021 Honda PASSPORT
1. Check and clear any trouble codes. 2. Inspect and clean the ESC sensors. 3. Check and repair any wiring issues. 4. Update the vehicle's software if necessary.
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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 SpecsParts for 2021 Honda PASSPORT
Essential Tool
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Related Diagnostic Codes
Other codes that may appear with C3721
C3719
Sequential Code
C3719: Suspension Damper or Shock Absorber Fault
Medium
C3720
Sequential Code
C3720: Steering Column Position Sensor Circuit Malfunction
Medium
C3722
Sequential Code
C3722: Traction Control System Malfunction
Medium
C3723
Sequential Code
C3723: Wheel Speed Sensor 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