← View Generic C3172 Guide
Severity: Medium
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Vehicle-Specific Guide
This guide is customized for your 2021 Honda PASSPORT
C3172: C3172: Brake System Pressure Sensor Circuit Malfunction
on 2021 Honda PASSPORT
Fix Cost
$100 - $300
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 C3172 Mean on 2021 Honda PASSPORT?
The brake system pressure sensor circuit has malfunctioned, indicating a problem with the brake system's ability to regulate pressure.
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Symptoms
- • Brake pedal feels spongy
- • brake light on dashboard
- • unusual brake noise
- • reduced braking performance
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Common Causes
- • Faulty brake pressure sensor
- • faulty wiring
- • brake fluid leak
- • air in brake system
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How to Fix C3172 on 2021 Honda PASSPORT
1. Check brake fluid level and top off if necessary. 2. Inspect brake lines for leaks. 3. Replace brake pressure sensor if faulty. 4. Check wiring for damage or corrosion.
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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 C3172
C3170
Sequential Code
C3170: Wheel Speed Sensor Malfunction
Medium
C3171
Sequential Code
C3171: ABS System Malfunction
Medium
C3173
Sequential Code
C3173: Rear Suspension Control Module (RSCM) Fault
Medium
C3174
Sequential Code
C3174: 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