AutoCodes – Mercury – C1D00 Mercury

C1D00 Mercury Code - Park Brake Apply Switch Circuit Short To Ground

Quick Answer

The Instrument Panel Cluster (IPC) uses 3 basic messaged inputs to control the brake warning indicator. Common causes include Faulty Park Brake Apply Switch, Park Brake Apply Switch harness is open or shorted, Park Brake Apply 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: C1D00 Mercury indicates Park Brake Apply Switch Circuit Short To Ground.
Common causes: Common causes include Faulty Park Brake Apply Switch, Park Brake Apply Switch harness is open or shorted, Park Brake Apply 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.

Save to My Repairs My Repairs

AI answers can be wrong. Verify repairs with testing. Open full chat

Code Popularity 766

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 Feb 11, 2019

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
Add Comment

💬 Need more help? Ask Coddy for instant answers — it's free!

Code C1D00 Mercury Description

The Instrument Panel Cluster (IPC) uses 3 basic messaged inputs to control the brake warning indicator. The first two are the parking brake warning indicator switch and the brake fluid level switch. The third is for the Electronic Brake Distribution (EBD) function controlled by the ABS module. The parking brake warning indicator switch and the brake fluid level switch status are sent from the Body Control Module (BCM) over the High Speed Controller Area Network (HS-CAN). The EBD message is sent from the ABS module over the HS-CAN.
The parking brake warning indicator switch is hardwired to the BCM through a single signal circuit while using a separate ground to control the input. The brake fluid level switch is hardwired to the BCM through separate signal and return circuits while using a separate ground to control the input.
The BCM provides a reference voltage to both the parking brake warning indicator switch and the brake fluid level switch. When the parking brake is applied, the parking brake warning indicator switch closes to ground, pulling the parking brake signal circuit low. When a low brake fluid level condition exists, the brake fluid level switch closes to ground, pulling the signal and return circuits low. If the brake fluid level switch is disconnected, the BCM reference voltage sent to the brake fluid level switch is sent high and the BCM sets DTC B1048:7B. When the BCM detects either the brake fluid level signal or the parking brake signal circuits low, or the brake fluid level signal and return circuit high, the BCM sends the IPC a brake warning indicator on request.
When the ABS module detects a base brake system concern or other ABS related concerns that affect the EBD function, the ABS module sends a brake warning indicator on request to the IPC to illuminate the brake warning indicator and the ABS warning indicator.

OBDII Code C1D00 Mercury - Park Brake Apply Switch Circuit Short To Ground - AutoCodes.com — C1D00 Mercury Code - Park Brake Apply Switch Circuit Short To Ground

What does this mean?

What are the Possible Causes of the DTC C1D00 Mercury?

Faulty Park Brake Apply Switch
Park Brake Apply Switch harness is open or shorted
Park Brake Apply Switch circuit poor electrical connection
Faulty Electronic Brake Distribution (EBD)

How to Fix the DTC C1D00 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 C1D00 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 C1D00 Mercury code?

Need more information on how to fix the C1D00 Mercury code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the C1D00 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 C1D00 Mercury Code

1. What are the common symptoms of OBDII code C1D00 in a Mercury related to the Park Brake Apply Switch Circuit Short To Ground?

- Common symptoms may include the parking brake not engaging or releasing properly, the parking brake warning light staying on, or the vehicle displaying a message related to the parking brake system.

2. What could cause the OBDII code C1D00 in a Mercury indicating a Park Brake Apply Switch Circuit Short To Ground?

- The code could be triggered by a short to ground in the wiring or connectors related to the park brake apply switch, a faulty park brake apply switch, or a problem with the electronic control module.

3. How can I diagnose the OBDII code C1D00 in my Mercury for the Park Brake Apply Switch Circuit Short To Ground?

- Diagnosing this code typically involves checking the wiring and connectors for any shorts or damage, testing the park brake apply switch for proper functionality, and using a scan tool to assess the electronic control module.

4. Is it safe to continue driving my Mercury with the OBDII code C1D00 related to the Park Brake Apply Switch Circuit Short To Ground?

- It is not recommended to drive the vehicle with this code present, as it may affect the proper operation of the parking brake system, potentially compromising safety.

5. Can I reset the OBDII code C1D00 in my Mercury indicating a Park Brake Apply Switch Circuit Short To Ground on my own?

- While you can clear the code with an OBDII scanner, it is crucial to address the underlying issue causing the fault code to prevent it from reoccurring.

6. What are the repair options for fixing the OBDII code C1D00 in a Mercury with a Park Brake Apply Switch Circuit Short To Ground?

- Repair options may include repairing or replacing damaged wiring or connectors, replacing the park brake apply switch if faulty, or addressing any issues with the electronic control module.

7. How much does it cost to repair the OBDII code C1D00 related to the Park Brake Apply Switch Circuit Short To Ground in a Mercury?

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

8. Can a DIY enthusiast with automotive knowledge fix the OBDII code C1D00 in a Mercury for the Park Brake Apply Switch Circuit Short To Ground?

- Depending on the individual's skill level and access to proper tools, it may be possible to address this issue as long as proper diagnostic procedures are followed and safety precautions are taken.

9. Are there any recalls or technical service bulletins related to the OBDII code C1D00 in a Mercury indicating a Park Brake Apply Switch Circuit Short To Ground?

- It is advisable to check with the manufacturer or a certified dealership to inquire about any relevant recalls or technical service bulletins that may apply to this specific fault code.

10. How can I prevent the OBDII code C1D00 related to the Park Brake Apply Switch Circuit Short To Ground from occurring in my Mercury in the future?

- Regular maintenance and inspections of the parking brake system, including checking for any signs of wear or damage, can help prevent issues that may trigger this fault code.