← View Generic C1402 Guide Severity: Medium

🚗 Vehicle-Specific Guide

This guide is customized for your 2021 Honda PASSPORT

C1402: C1402: Rear Suspension Control Module (RSCM) Fault

on 2021 Honda PASSPORT

Fix Cost

$200 - $800

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 C1402 Mean on 2021 Honda PASSPORT?

The C1402 code indicates a fault in the rear suspension control module (RSCM), which regulates the rear suspension's height and damping.

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Symptoms

• Sagging rear suspension
• uneven tire wear
• reduced ride height
• and possible loss of stability.

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Common Causes

• Faulty RSCM
• wiring issues
• or sensor malfunctions.

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How to Fix C1402 on 2021 Honda PASSPORT

1. Disconnect the battery to clear the code. 2. Inspect and clean the RSCM wiring harness. 3. Check and replace faulty sensors. 4. Update the RSCM software if necessary. 5. Replace the RSCM if all else fails.

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Need Maintenance Info for Your PASSPORT?

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Parts for 2021 Honda PASSPORT

RSCM Shop ↗ wiring harness Shop ↗ sensors Shop ↗

Essential Tool

Must Have

OBD2 Scanner

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Related Diagnostic Codes

Other codes that may appear with C1402

C1400 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