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AutoCodes - Generic - C1840

C1840 Code - Air Suspension Disable Switch Circuit Failure

- Code Popularity: 7,983 Views
- Repair Importance Level: 3/3
- Repair Difficulty Level: 3/3
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What are the Possible Causes of the DTC C1840?

NOTE: The causes shown may not be a complete list of all potential problems, and it is possible that there may be other causes.
  • Faulty Air Suspension Disable Switch
  • Air Suspension Disable Switch harness is open or shorted
  • Air Suspension Disable Switch circuit poor electrical connection
  • Faulty Air Suspension Control Module
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How to Fix the DTC C1840?

Review the 'Possible Causes' mentioned above and visually examine the corresponding wiring harness and connectors. Ensure to check for any damaged components and inspect the connector pins for signs of being broken, bent, pushed out, or corroded.

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What is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the C1840 code, it typically requires 1.0 hour of labor. The specific diagnosis time and labor rates at auto repair shops can differ based on factors such as the location, make and model of the vehicle, and even the engine type. It is common for most auto repair shops to charge between $75 and $150 per hour.

What are Code Possible Symptoms?

  • Anti-Lock Brake System (ABS) Warning Light ON
  • Engine Light ON (or Service Engine Soon Warning Light)

Code C1840 Description

The Air Suspension Control Module monitors the Air Suspension Disable Switch. The Air Suspension Disable Switch sets the OBDII code when the Air Suspension Compressor Relay is not to factory specifications.

OBDII Code C1840 - Air Suspension Disable Switch Circuit Failure - AutoCodes.com
C1840 Code - Air Suspension Disable Switch Circuit Failure

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Code C1840 comments

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