← Back to Search Severity: Medium

C1402

C1402: Rear Suspension Control Module (RSCM) Fault

Fix Cost
$200 - $800
Parts & Labor
Difficulty
3/5
Moderate
1-2 hours
DIY Possible?
❌ No
Pro recommended
Category
Chassis
System

📖 What Does C1402 Mean?

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.
Fix Guide
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Possible Solutions

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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Common Questions About C1402

Q

Can I drive with code C1402?

A

You can drive for a short time, but should address code C1402 soon to avoid worsening the problem or failing an emissions test.

Q

How much does it cost to fix C1402?

A

The estimated repair cost for code C1402 is between $200 and $800. This includes parts and labor for most makes and models.

Q

Is this code easy to fix myself?

A

This repair is considered moderate. It may require specialized tools or significant disassembly. Professional help is recommended if you aren't an experienced DIYer.

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Need a Pro?

Complex codes like C1402 can be tricky. Don't risk it if you're unsure.

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Related Diagnostic Codes

Other codes that may appear with C1402

💡 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