← Back to Search Severity: Medium

C1140

C1140: Wheel Speed Sensor Malfunction

Fix Cost
$100 - $300
Parts & Labor
Difficulty
3/5
Moderate
1-2 hours
DIY Possible?
❌ No
Pro recommended
Category
Chassis
System

📖 What Does C1140 Mean?

The wheel speed sensor malfunction code C1140 indicates a problem with the wheel speed sensor circuit, which monitors the speed of the vehicle's wheels and sends the data to the vehicle's computer.
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Symptoms

  • ABS light on
  • vehicle may vibrate or pull to one side
  • reduced traction control system performance
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Common Causes

  • Faulty wheel speed sensor
  • faulty wheel speed sensor circuit
  • loose or corroded sensor connections
  • wheel speed sensor magnet or sensor ring damage
Fix Guide
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Possible Solutions

1. Check and clean the wheel speed sensor connections, 2. Replace the wheel speed sensor if faulty, 3. Check and adjust the wheel speed sensor magnet or sensor ring if damaged, 4. Check and repair any loose or corroded connections

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Common Questions About C1140

Q

Can I drive with code C1140?

A

You can drive for a short time, but should address code C1140 soon to avoid worsening the problem or failing an emissions test.

Q

How much does it cost to fix C1140?

A

The estimated repair cost for code C1140 is between $100 and $300. 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 C1140 can be tricky. Don't risk it if you're unsure.

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Related Diagnostic Codes

Other codes that may appear with C1140

💡 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