AutoCodes – Ford – C1D00 Ford

C1D00 Ford 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 Ford 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.

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Code Popularity 22,331

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

What does this mean?

What are the Possible Causes of the DTC C1D00 Ford?

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 Ford?

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 Ford 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.

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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 C1D00 Ford Code

1. What are common symptoms of OBDII code C1D00 Ford (Park Brake Apply Switch Circuit Short To Ground)?

- Common symptoms include the parking brake not engaging or disengaging properly, illuminated brake warning light on the dashboard, and potential issues with the parking brake system.

2. What causes the OBDII code C1D00 Ford (Park Brake Apply Switch Circuit Short To Ground)?

- The code is usually caused by a short circuit to ground in the park brake apply switch circuit, which can be due to wiring issues, a faulty switch, or a damaged connector.

3. How can I diagnose the OBDII code C1D00 Ford (Park Brake Apply Switch Circuit Short To Ground)?

- Diagnosis involves inspecting the wiring and connectors related to the park brake apply switch, checking the switch for proper operation, and using a multimeter to test for shorts to ground.

4. Can I continue driving with the OBDII code C1D00 Ford (Park Brake Apply Switch Circuit Short To Ground) present?

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

5. How do I repair the OBDII code C1D00 Ford (Park Brake Apply Switch Circuit Short To Ground)?

- Repairing the issue involves locating and repairing the short to ground in the park brake apply switch circuit, replacing any damaged wiring or connectors, and addressing any faulty components.

6. Is it safe to reset the OBDII code C1D00 Ford (Park Brake Apply Switch Circuit Short To Ground) without fixing the underlying issue?

- Resetting the code without addressing the root cause may temporarily turn off the warning light, but the problem will likely persist and could lead to safety concerns with the parking brake system.

7. Will the OBDII code C1D00 Ford (Park Brake Apply Switch Circuit Short To Ground) affect my vehicle's performance?

- While the code itself may not directly impact performance, the underlying issue with the parking brake system could compromise safety and should be addressed promptly.

8. Can extreme weather conditions contribute to the OBDII code C1D00 Ford (Park Brake Apply Switch Circuit Short To Ground)?

- Extreme weather conditions can potentially exacerbate existing wiring or connector issues, leading to shorts to ground in the park brake apply switch circuit.

9. How long does it typically take to repair the OBDII code C1D00 Ford (Park Brake Apply Switch Circuit Short To Ground)?

- The repair time can vary depending on the exact cause of the issue, but it may take anywhere from a few hours to a day to diagnose and fix the problem.

10. Are there any preventive measures to avoid encountering the OBDII code C1D00 Ford (Park Brake Apply Switch Circuit Short To Ground)?

- Regularly inspecting and maintaining the parking brake system, including checking the wiring and connectors, can help prevent issues that may trigger this code.