AutoCodes – Mercury – C1890 Mercury

C1890 Mercury Code - Air Suspension Left Front Height Sensor Circuit Open

Quick Answer

The Vehicle Dynamic Module (VDM) monitors the Air Suspension Left Front Height Sensor. Common causes include Faulty Air Suspension Left Front Height Sensor, Air Suspension Left Front Height Sensor harness is open or shorted, Air Suspension Left Front Height Sensor 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
C1890 Mercury indicates Air Suspension Left Front Height Sensor Circuit Open.
Common causes
Common causes include Faulty Air Suspension Left Front Height Sensor, Air Suspension Left Front Height Sensor harness is open or shorted, Air Suspension Left Front Height Sensor 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 678
How popular is this code, among other codes? Low
Table of contents Created and updated by William Orellana on Dec 03, 2020
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Code C1890 Mercury Description

The Vehicle Dynamic Module (VDM) monitors the Air Suspension Left Front Height Sensor. The VDM sets the OBDII code when the Air Suspension Left Front Height Sensor is not to factory specifications.
OBDII Code C1890 Mercury - Air Suspension Left Front Height Sensor Circuit Open - AutoCodes.com
C1890 Mercury Code - Air Suspension Left Front Height Sensor Circuit Open

What are the Possible Causes of the DTC C1890 Mercury?

  • Faulty Air Suspension Left Front Height Sensor
  • Air Suspension Left Front Height Sensor harness is open or shorted
  • Air Suspension Left Front Height Sensor circuit poor electrical connection
  • Faulty Vehicle Dynamic Module (VDM)

How to Fix the DTC C1890 Mercury?

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 C1890 Mercury 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 C1890 Mercury code?

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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 C1890 Mercury Code

1. What are the common symptoms of OBDII code C1890 for a Mercury with the message "Air Suspension Left Front Height Sensor Circuit Open"?

The common symptoms include the air suspension system not adjusting properly, uneven vehicle height, and a warning light on the dashboard.

2. What are the possible causes of OBDII code C1890 on a Mercury related to the left front height sensor circuit being open?

Possible causes include a faulty height sensor, damaged wiring or connectors, a blown fuse, or a malfunctioning control module.

3. How can I diagnose the issue causing OBDII code C1890 on my Mercury air suspension system?

You can start by visually inspecting the wiring and connectors related to the left front height sensor, checking the fuse, and using a multimeter to test the sensor for continuity and proper operation.

4. Is it safe to continue driving my Mercury with OBDII code C1890 related to the left front height sensor circuit open?

It is not recommended to drive the vehicle with this issue as it can affect the handling and stability of the car and potentially lead to further damage to the air suspension system.

5. Can I reset the OBDII code C1890 on my Mercury to see if it comes back before attempting any repairs?

While you can clear the code temporarily, it is likely to return until the underlying issue causing the left front height sensor circuit open is resolved.

6. How much does it typically cost to repair OBDII code C1890 on a Mercury due to the air suspension left front height sensor circuit open?

The cost of repairs can vary depending on the exact cause of the issue, but it may involve replacing the height sensor, repairing damaged wiring, or addressing a faulty control module, potentially ranging from a few hundred to over a thousand dollars.

7. Can I fix the OBDII code C1890 issue on my Mercury myself, or should I take it to a professional mechanic?

If you have experience with automotive electrical systems and access to the necessary tools, you may be able to diagnose and repair the issue yourself. Otherwise, it is recommended to seek the help of a professional mechanic familiar with air suspension systems.

8. Are there any preventive measures I can take to avoid OBDII code C1890 from occurring on my Mercury in the future?

Regularly inspecting the air suspension system components, checking for any signs of wear or damage, and addressing any issues promptly can help prevent the recurrence of this code.

9. Will fixing OBDII code C1890 on my Mercury improve the overall performance and comfort of the vehicle?

Yes, resolving issues related to the air suspension system, such as the left front height sensor circuit open, can help restore proper vehicle height adjustment, stability, and ride comfort.

10. How long does it usually take to repair OBDII code C1890 on a Mercury caused by the air suspension left front height sensor circuit open?

The repair time can vary depending on the exact cause of the issue and the availability of parts, but it may take a few hours to a full day for a mechanic to diagnose and fix the problem.

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