← View Generic C2851 Guide Severity: Medium

🚗 Vehicle-Specific Guide

This guide is customized for your 2021 Honda PASSPORT

C2851: C2851: Rear Suspension Control Module (RSCM) Fault

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 C2851 Mean on 2021 Honda PASSPORT?

The Rear Suspension Control Module (RSCM) has detected an issue with the rear suspension system, possibly due to a faulty sensor, wiring problem, or malfunctioning module.

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Symptoms

• Sway bar vibrations
• uneven tire wear
• reduced suspension travel
• unusual noises from the rear suspension

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Common Causes

• Faulty RSCM sensor
• wiring damage
• loose or worn-out suspension components
• air in the suspension system

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How to Fix C2851 on 2021 Honda PASSPORT

1. Clear the code and monitor the system to ensure the issue is resolved. 2. Inspect and replace any damaged wiring or sensors. 3. Check and adjust suspension components. 4. Bleed the suspension system if air is present.

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Need Maintenance Info for Your PASSPORT?

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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 C2851

C2849 Sequential Code

💡 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