AutoCodes – Mercury – C1745 Mercury

C1745 Mercury Code - Front Sounder Circuit Short Battery

Quick Answer

The system can be disabled by the parking aid switch. Common causes include Faulty Parking Aid Speaker, Parking Aid Speaker harness is open or shorted, Parking Aid Speaker 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: C1745 Mercury indicates Front Sounder Circuit Short Battery.
Common causes: Common causes include Faulty Parking Aid Speaker, Parking Aid Speaker harness is open or shorted, Parking Aid Speaker 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 910

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 Nov 19, 2020

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code C1745 Mercury Description

The system can be disabled by the parking aid switch. A 750 Hz variable warning tone is generated from a parking aid speaker. The parking aid speaker increases the warning tone rate as the vehicle gets closer to an obstacle.

OBDII Code C1745 Mercury - Front Sounder Circuit Short Battery - AutoCodes.com — C1745 Mercury Code - Front Sounder Circuit Short Battery

What does this mean?

What are the Possible Causes of the DTC C1745 Mercury?

Faulty Parking Aid Speaker
Parking Aid Speaker harness is open or shorted
Parking Aid Speaker circuit poor electrical connection
Faulty Parking Aid Module

How to Fix the DTC C1745 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 C1745 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 C1745 Mercury code?

Need more information on how to fix the C1745 Mercury code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the C1745 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 C1745 Mercury Code

1. What are the common symptoms of OBDII code C1745 (Mercury) - Front Sounder Circuit Short Battery?

The common symptoms include an illuminated Check Engine Light, a warning message on the instrument panel, and possible issues with the vehicle's alarm system.

2. What can cause the OBDII code C1745 (Mercury) - Front Sounder Circuit Short Battery?

The code C1745 is typically caused by a short circuit in the front sounder circuit, which may be due to damaged wiring, faulty components, or water intrusion.

3. How do I diagnose the OBDII code C1745 (Mercury) - Front Sounder Circuit Short Battery?

Diagnosing this code involves using a scan tool to retrieve the fault code, inspecting the front sounder circuit for any visible damage, and testing the components for proper functionality.

4. Can I still drive my vehicle with the OBDII code C1745 (Mercury) - Front Sounder Circuit Short Battery?

It is generally safe to drive the vehicle with this code, but it is recommended to address the issue promptly to prevent any potential problems with the alarm system.

5. How do I repair the OBDII code C1745 (Mercury) - Front Sounder Circuit Short Battery?

Repairing this code may involve repairing or replacing damaged wiring, replacing faulty components in the front sounder circuit, and clearing the code with a scan tool.

6. Can a DIY enthusiast fix the OBDII code C1745 (Mercury) - Front Sounder Circuit Short Battery?

While some DIY enthusiasts may be able to diagnose and repair this code, it is recommended to seek professional help if you are not experienced with automotive electrical systems.

7. Is the OBDII code C1745 (Mercury) - Front Sounder Circuit Short Battery a common issue in Mercury vehicles?

The code C1745 is not extremely common, but it can occur in Mercury vehicles with alarm systems that have issues with the front sounder circuit.

8. How much does it typically cost to repair the OBDII code C1745 (Mercury) - Front Sounder Circuit Short Battery?

The cost of repairing this code can vary depending on the extent of the damage and the parts that need to be replaced, but it may range from $100 to $300 or more.

9. Will resetting the OBDII code C1745 (Mercury) - Front Sounder Circuit Short Battery make it go away permanently?

Simply resetting the code may temporarily clear the Check Engine Light, but if the underlying issue is not fixed, the code is likely to return.

10. What should I do if the OBDII code C1745 (Mercury) - Front Sounder Circuit Short Battery keeps coming back?

If the code keeps coming back after being cleared, it is important to thoroughly inspect and repair the front sounder circuit to address the root cause of the issue.