← View Generic C3173 Guide Severity: Medium
🚗 Vehicle-Specific Guide

This guide is customized for your 2021 Honda PASSPORT

C3173: C3173: Rear Suspension Control Module (RSCM) Fault

on 2021 Honda PASSPORT

Fix Cost
$200 - $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 C3173 Mean on 2021 Honda PASSPORT?

The Rear Suspension Control Module (RSCM) has detected an issue with the rear suspension system, such as a faulty sensor or wiring problem.
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Symptoms

  • • Rear suspension sag
  • • uneven tire wear
  • • difficulty steering
  • • or a warning light on the dashboard.
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Common Causes

  • • Faulty RSCM sensor
  • • wiring issue
  • • loose or damaged suspension components
  • • or a problem with the electronic control unit.
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How to Fix C3173 on 2021 Honda PASSPORT

1. Check the RSCM sensor and wiring for damage or corrosion. 2. Inspect and clean or replace the sensor if necessary. 3. Check the suspension components for damage or wear and replace if necessary. 4. Update the electronic control unit software if necessary.

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Parts for 2021 Honda PASSPORT

RSCM sensor Shop ↗ wiring harness Shop ↗ suspension components Shop ↗

Essential Tool

Must Have

OBD2 Scanner

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Related Diagnostic Codes

Other codes that may appear with C3173

C3171 Sequential Code

C3171: ABS System Malfunction

Medium
C3172 Sequential Code

C3172: Brake System Pressure Sensor Circuit Malfunction

Medium
C3174 Sequential Code

C3174: Steering Column Position Sensor Circuit Malfunction

Medium
C3175 Sequential Code

C3175: Electronic Stability Control (ESC) 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