AutoCodes – Generic – C1842

C1842 Code - Air Suspension Disable Switch Circuit Short To Battery

Quick Answer

The Air Suspension Control Module monitors the Air Suspension Disable Switch. Common causes include Faulty Air Suspension Disable Switch, Air Suspension Disable Switch harness is open or shorted, Air Suspension Disable Switch circuit poor electrical connection. Severity is High - diagnose this code as soon as possible. Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.

What it means
C1842 indicates Air Suspension Disable Switch Circuit Short To Battery.
Common causes
Common causes include Faulty Air Suspension Disable Switch, Air Suspension Disable Switch harness is open or shorted, Air Suspension Disable Switch circuit poor electrical connection.
Severity
High - diagnose this code as soon as possible.
Can I drive?
Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.
AI answers can be wrong. Verify repairs with testing. Open full chat
Code Popularity 4,681
How popular is this code, among other codes? Low
Table of contents Created and updated by William Orellana on Nov 30, 2020
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Code C1842 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 C1842 - Air Suspension Disable Switch Circuit Short To Battery - AutoCodes.com
C1842 Code - Air Suspension Disable Switch Circuit Short To Battery

What are the Possible Causes of the DTC C1842?

  • 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

How to Fix the DTC C1842?

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

What is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the C1842 code, it typically requires 1.0 hour of labor. Rates vary by location, vehicle, and shop. Many shops charge between $80–$150 per hour; dealerships and metro areas may be higher, independents may be lower.

Need more information about the C1842 code?

Need more information on how to fix the C1842 code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the C1842 code diagnosed by a professional: Find a repair shop in your area

Information for Specific Makes

  • C1842 Ford β€” Air Suspension Disable Switch Circuit Short To Battery
  • C1842 Lincoln β€” Air Suspension Disable Switch Circuit Short To Battery
  • C1842 Mercury β€” Air Suspension Disable Switch Circuit Short To Battery
About the author: William Orellana is a Master Mechanic and Mechanical Engineer with over 30 years of experience diagnosing and repairing vehicles. Learn more about his background.

Frequently Asked Questions about C1842 Code

1. What are common symptoms of OBDII code C1842 (Air Suspension Disable Switch Circuit Short To Battery)?

- Common symptoms include a disabled air suspension system, harsh ride quality, and warning lights on the dashboard.

2. What causes the OBDII code C1842 to trigger?

- The code is triggered when there is a short circuit between the air suspension disable switch circuit and the battery.

3. How can I diagnose the issue related to code C1842?

- Diagnose the issue by checking the wiring and connections related to the air suspension disable switch circuit for any signs of damage or short circuits.

4. Can I still drive my vehicle with OBDII code C1842 present?

- It is not recommended to drive the vehicle with this code present, as it can affect the performance and safety of the air suspension system.

5. What are some repair tips for fixing OBDII code C1842?

- Repair tips include inspecting and repairing any damaged wiring, replacing faulty components, and clearing the code with an OBDII scanner after the repair is completed.

6. How serious is OBDII code C1842 (Air Suspension Disable Switch Circuit Short To Battery)?

- This code is considered serious as it can disable the air suspension system, affecting the vehicle's ride quality and potentially compromising safety.

7. Can I reset OBDII code C1842 without fixing the underlying issue?

- It is not recommended to reset the code without fixing the underlying issue, as the problem will persist and may lead to further complications.

8. Is it possible to prevent OBDII code C1842 from occurring in the future?

- Regular maintenance and inspection of the air suspension system components can help prevent issues like code C1842 from occurring in the future.

9. How much does it typically cost to repair OBDII code C1842?

- The cost of repair can vary depending on the extent of the damage and the specific components that need to be replaced. It is recommended to consult a professional for an accurate estimate.

10. Can a DIY enthusiast fix OBDII code C1842 at home?

- While some DIY enthusiasts may have the skills to diagnose and repair the issue related to this code, it is advisable to seek professional help to ensure the problem is addressed correctly.

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