C1821 Code - Electronic Parking Brake Motor Failure
Quick Answer
The Parking Brake Module monitors the Electronic Parking Brake Motor. Common causes include Faulty Electronic Parking Brake Motor, Electronic Parking Brake Motor harness is open or shorted, Electronic Parking Brake Motor 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
- C1821 indicates Electronic Parking Brake Motor Failure.
- Common causes
- Common causes include Faulty Electronic Parking Brake Motor, Electronic Parking Brake Motor harness is open or shorted, Electronic Parking Brake Motor 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.
Code C1821 Description
What are the Possible Causes of the DTC C1821?
- Faulty Electronic Parking Brake Motor
- Electronic Parking Brake Motor harness is open or shorted
- Electronic Parking Brake Motor circuit poor electrical connection
- Faulty Parking Brake Module
How to Fix the DTC C1821?
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 C1821 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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Need Help with the Code?
Get the C1821 code diagnosed by a professional: Find a repair shop in your area
Information for Specific Makes
- C1821 Ford — Electronic Parking Brake Motor Failure
- C1821 Lincoln — Electronic Parking Brake Motor Failure
- C1821 Mercury — Electronic Parking Brake Motor Failure
Frequently Asked Questions about C1821 Code
1. What are the common symptoms of OBDII code C1821 (Electronic Parking Brake Motor Failure)?
When this code is triggered, you may experience issues with the electronic parking brake not engaging or releasing properly, unusual noises coming from the brake system, or a warning light on the dashboard.
2. What are the possible causes of OBDII code C1821?
The Electronic Parking Brake Motor Failure code C1821 can be caused by a malfunctioning electronic parking brake motor, damaged wiring or connectors in the system, low voltage to the motor, or a faulty electronic control unit (ECU).
3. How can I diagnose the Electronic Parking Brake Motor Failure issue related to code C1821?
To diagnose the issue, you can use an OBDII scanner to retrieve the specific fault code (C1821), inspect the electronic parking brake system components for visible damage, and perform a voltage test on the motor to ensure it is receiving power.
4. Can I continue driving my vehicle with OBDII code C1821 present?
It is not recommended to drive your vehicle with the Electronic Parking Brake Motor Failure code C1821 present, as it may lead to unsafe braking conditions or further damage to the brake system. It is best to address the issue promptly.
5. How can I repair OBDII code C1821 (Electronic Parking Brake Motor Failure)?
Repairing this code may involve replacing the faulty electronic parking brake motor, repairing damaged wiring or connectors, ensuring proper voltage supply to the motor, or reprogramming the electronic control unit (ECU) if necessary.
6. Is it possible to reset OBDII code C1821 without repairing the issue?
While you can clear the fault code temporarily with an OBDII scanner, the underlying issue causing the Electronic Parking Brake Motor Failure should be addressed to prevent further problems and ensure the safety of your vehicle.
7. Are there any DIY tips for troubleshooting OBDII code C1821 at home?
You can start by checking the fuse related to the electronic parking brake system, inspecting the wiring harness for visible damage, and ensuring the parking brake motor connections are secure. However, for a more accurate diagnosis and repair, professional assistance may be needed.
8. How much does it typically cost to repair OBDII code C1821?
The cost of repairing the Electronic Parking Brake Motor Failure code C1821 can vary depending on the extent of the issue, the parts needed for replacement, and the labor rates of the repair shop. It is advisable to get a few quotes from different mechanics to compare prices.
9. Can extreme weather conditions affect the triggering of OBDII code C1821?
Yes, extreme weather conditions such as very high or low temperatures can impact the performance of electronic components in the parking brake system, which may contribute to the triggering of code C1821. It's important to keep the system well-maintained, especially in such conditions.
10. How frequently does OBDII code C1821 (Electronic Parking Brake Motor Failure) occur in vehicles?
The occurrence of code C1821 can vary depending on the make and model of the vehicle, as well as the usage and maintenance of the electronic parking brake system. While not the most common OBDII code, it is encountered by some vehicle owners, particularly those with electronic parking brakes.
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