AutoCodes – Mercury – C1901 Mercury

C1901 Mercury Code - Ride Control Right Rear Shock Actuator Circuit Failure

Quick Answer

The Air Suspension Module monitors the Ride Control Right Rear Shock Actuator. Common causes include Faulty Ride Control Right Rear Shock Actuator, Ride Control Right Rear Shock Actuator harness is open or shorted, Ride Control Right Rear Shock Actuator 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: C1901 Mercury indicates Ride Control Right Rear Shock Actuator Circuit Failure.
Common causes: Common causes include Faulty Ride Control Right Rear Shock Actuator, Ride Control Right Rear Shock Actuator harness is open or shorted, Ride Control Right Rear Shock Actuator 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.

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Code Popularity 947

How popular is this code, among other codes? Low

Repair Importance Level

Urgent (Diagnose now) (3 / 3)

Repair Difficulty Level

Advanced (Pro) (3 / 3)

What is this?

Table of contents Created and updated by William Orellana on Dec 03, 2020

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code C1901 Mercury Description

The Air Suspension Module monitors the Ride Control Right Rear Shock Actuator. The Air Suspension Module sets the OBDII code when the Ride Control Right Rear Shock Actuator is not to factory specifications.

OBDII Code C1901 Mercury - Ride Control Right Rear Shock Actuator Circuit Failure - AutoCodes.com — C1901 Mercury Code - Ride Control Right Rear Shock Actuator Circuit Failure

What does this mean?

What are the Possible Causes of the DTC C1901 Mercury?

Faulty Ride Control Right Rear Shock Actuator
Ride Control Right Rear Shock Actuator harness is open or shorted
Ride Control Right Rear Shock Actuator circuit poor electrical connection
Faulty Air Suspension Module

How to Fix the DTC C1901 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 C1901 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 C1901 Mercury code?

Need more information on how to fix the C1901 Mercury code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the C1901 Mercury code diagnosed by a professional: Find a repair shop in your area

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 C1901 Mercury Code

1. What does the OBDII code C1901 mean on a Mercury vehicle?

C1901 indicates a Ride Control Right Rear Shock Actuator Circuit Failure, meaning there is an issue with the electronic control of the right rear shock absorber.

2. What are the common symptoms of the C1901 code?

Symptoms include a rough or uncomfortable ride, suspension warning lights on the dashboard, and reduced ride control functionality.

3. What causes the C1901 code to appear?

Common causes include a damaged shock actuator, faulty wiring or connectors, a malfunctioning suspension control module, or corrosion in the circuit.

4. Can I still drive my car with the C1901 code?

Yes, but the ride quality may be compromised, and ignoring the issue could lead to further damage to the suspension system.

5. How can I diagnose the cause of the C1901 code?

Start by inspecting the wiring and connectors for damage or corrosion, then test the right rear shock actuator for proper operation. A scan tool can help verify the fault.

6. How is the C1901 code typically fixed?

Repairs may include replacing the right rear shock actuator, repairing or replacing damaged wiring, or reprogramming or replacing the suspension control module.

7. How much does it cost to fix the C1901 code?

Repair costs vary but may range from $200 to $1,000 depending on whether wiring repairs, a new actuator, or module replacement is needed.

8. Can a faulty suspension control module trigger the C1901 code?

Yes, a malfunctioning suspension control module can fail to communicate with the shock actuator and trigger this code.

9. How can I prevent the C1901 code from returning?

Regularly inspect the suspension system for wear, keep electrical connections clean and dry, and address any suspension issues promptly.

10. Do I need a professional to repair the C1901 code?

While some basic checks like inspecting wiring can be done at home, diagnosing and repairing the suspension system often requires specialized tools and expertise.