AutoCodes – Mercury – C1929 Mercury

C1929 Mercury Code - Air Suspension Front Compressor Relay Circuit Failure

Quick Answer

The Air Suspension Module monitors the Air Suspension Front Compressor Relay. Common causes include Faulty Air Suspension Front Compressor Relay, Air Suspension Front Compressor Relay harness is open or shorted, Air Suspension Front Compressor Relay 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
C1929 Mercury indicates Air Suspension Front Compressor Relay Circuit Failure.
Common causes
Common causes include Faulty Air Suspension Front Compressor Relay, Air Suspension Front Compressor Relay harness is open or shorted, Air Suspension Front Compressor Relay 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 748
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 C1929 Mercury Description

The Air Suspension Module monitors the Air Suspension Front Compressor Relay. The Air Suspension Module sets the OBDII code when the VAir Suspension Front Compressor Relay is not to factory specifications.
OBDII Code C1929 Mercury - Air Suspension Front Compressor Relay Circuit Failure - AutoCodes.com
C1929 Mercury Code - Air Suspension Front Compressor Relay Circuit Failure

What are the Possible Causes of the DTC C1929 Mercury?

  • Faulty Air Suspension Front Compressor Relay
  • Air Suspension Front Compressor Relay harness is open or shorted
  • Air Suspension Front Compressor Relay circuit poor electrical connection

How to Fix the DTC C1929 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 C1929 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 C1929 Mercury code?

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Need Help with the Code?

Get the C1929 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 C1929 Mercury Code

1. What are the common symptoms of OBDII code C1929 in a Mercury related to Air Suspension Front Compressor Relay Circuit Failure?

- Common symptoms include the front suspension not inflating properly, sagging in the front of the vehicle, and a noticeable difference in ride height.

2. What are the possible causes of OBDII code C1929 in a Mercury related to Air Suspension Front Compressor Relay Circuit Failure?

- Possible causes include a faulty front compressor relay, damaged wiring or connectors in the circuit, or a malfunctioning front air suspension compressor.

3. How can I diagnose the issue causing OBDII code C1929 in a Mercury related to Air Suspension Front Compressor Relay Circuit Failure?

- You can diagnose the issue by checking the front compressor relay for proper functioning, inspecting the wiring and connectors for any damage, and testing the front air suspension compressor for faults.

4. Can I still drive my Mercury with OBDII code C1929 related to Air Suspension Front Compressor Relay Circuit Failure?

- 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. How can I repair OBDII code C1929 in a Mercury related to Air Suspension Front Compressor Relay Circuit Failure?

- Repair options may include replacing the front compressor relay, repairing any damaged wiring or connectors, or replacing the front air suspension compressor if necessary.

6. Are there any DIY tips for troubleshooting OBDII code C1929 in a Mercury related to Air Suspension Front Compressor Relay Circuit Failure?

- DIY tips may include checking for loose connections, inspecting the relay for signs of damage, and ensuring proper power supply to the front air suspension compressor.

7. How much does it typically cost to repair OBDII code C1929 in a Mercury related to Air Suspension Front Compressor Relay Circuit Failure?

- Repair costs can vary depending on the exact cause of the issue, but it is advisable to consult with a professional mechanic for an accurate estimate.

8. What are the long-term implications of ignoring OBDII code C1929 in a Mercury related to Air Suspension Front Compressor Relay Circuit Failure?

- Ignoring this code can lead to further damage to the air suspension system, affecting the vehicle's ride quality and potentially causing safety issues.

9. Is it possible to reset OBDII code C1929 in a Mercury related to Air Suspension Front Compressor Relay Circuit Failure without fixing the underlying issue?

- While you can clear the code temporarily, it will likely reappear until the root cause of the problem is addressed.

10. Can OBDII code C1929 in a Mercury related to Air Suspension Front Compressor Relay Circuit Failure be triggered by other issues?

- This code is specifically related to a failure in the front compressor relay circuit, so other issues may trigger different OBDII codes.

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