← View Generic C0203 Guide
Severity: Medium
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Vehicle-Specific Guide
This guide is customized for your 2021 Honda PASSPORT
C0203: C0203: ABS 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
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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 C0203 Mean on 2021 Honda PASSPORT?
The ABS system has detected a malfunction, likely due to a faulty wheel speed sensor or a problem with the ABS module.
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Symptoms
- • ABS warning light on
- • vehicle may vibrate or pull to one side
- • reduced braking performance
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Common Causes
- • Faulty wheel speed sensor
- • ABS module failure
- • wiring issue
- • or faulty brake sensor
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How to Fix C0203 on 2021 Honda PASSPORT
1. Check and clear any trouble codes. 2. Inspect and clean wheel speed sensors. 3. Replace faulty wheel speed sensor(s). 4. Test ABS system after repairs.
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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 C0203
C0201
Sequential Code
C0201: Traction Control System Malfunction
Medium
C0202
Sequential Code
C0202: Wheel Speed Sensor Malfunction
Medium
C0204
Sequential Code
C0204: Brake System Malfunction
Medium
C0205
Sequential Code
C0205: Rear Suspension Strut or Shock Absorber Fault
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