C0A8C - Common Diagnostic Trouble Code in 2015-2020 Jeep Cherokee and Dodge Durango

Quick Answer

C0A8C means: DTC C0A8C indicates a fault in the electronic parking brake system.

Fix: Check and replace faulty components Cost: $300 - $600 Time: 90-180 minutes

Can I drive with C0A8C? Immediate attention is recommended to prevent safety hazards.

Common Questions

What does C0A8C mean and how does it affect my car?

DTC C0A8C indicates a problem with the electronic parking brake system. If this code appears, it could mean your parking brake might not work correctly, leading to safety issues when parking. Immediate attention is required to ensure the brake functions properly.

What are the most common causes of C0A8C and how much does it cost to fix?

The most prevalent cause of C0A8C is a faulty electronic parking brake module, costing between $300 to $600 to replace. Other causes include wiring issues and software glitches, with repair costs ranging from $100 to $300 depending on the specific problem.

Can I drive my car with C0A8C or should I stop immediately?

While you might be able to drive your car with the C0A8C code, it is not advisable. The malfunctioning electronic parking brake can lead to your vehicle rolling unexpectedly, especially on inclines, posing a significant safety risk. It’s best to have it checked as soon as possible.

How can I diagnose C0A8C myself using GeekOBD APP?

To diagnose C0A8C using the GeekOBD APP, connect the device to your vehicle's OBD2 port, launch the app, and run a diagnostic scan. Review any codes retrieved, focusing on C0A8C and any related codes to understand the context of the issue.

What vehicles are most commonly affected by C0A8C?

DTC C0A8C is commonly found in models like the 2015-2020 Jeep Cherokee and Dodge Durango. These vehicles may also have associated recalls or technical service bulletins addressing issues with the electronic parking brake system.

How can I prevent C0A8C from happening again?

To prevent the C0A8C code from recurring, ensure regular maintenance of the electronic parking brake system. This includes inspecting wiring for wear, keeping the system clean and free from moisture, and addressing any software updates recommended by the manufacturer.

What is C0A8C?

The DTC C0A8C code refers to a specific issue within the vehicle's advanced driver-assistance systems (ADAS), particularly related to the electronic parking brake system. This code typically indicates a fault in the communication between the electronic parking brake (EPB) module and the vehicle's main control module or a malfunction within the EPB component itself. For car owners, this means that the parking brake may not function as intended, potentially leading to safety concerns when parking the vehicle on inclines or uneven surfaces. The vehicle's check engine light might illuminate, and the driver may experience issues with the parking brake engaging or disengaging properly. In severe cases, the electronic parking brake may remain stuck, preventing the vehicle from moving, which can be both an inconvenience and a safety hazard. Understanding this code is crucial for timely repairs, ensuring that the vehicle remains safe and operable. Regular diagnostics and maintenance, especially in affected models like the Jeep Cherokee and Dodge Durango from 2015 to 2020, can prevent further complications associated with this issue.

System: C - Chassis (ABS, Steering, Suspension)

Symptoms

Common symptoms when C0A8C is present:

  • The check engine light stays on constantly, indicating an underlying issue with the electronic parking brake system.
  • Drivers may notice the electronic parking brake not engaging or releasing properly, leading to difficulties in securing the vehicle when parked.
  • Fuel economy may decrease by 5-10% if the vehicle's systems are not functioning optimally due to the parking brake malfunction.
  • Unexpected beeping sound occurs when attempting to engage or disengage the parking brake, which can be unsettling for drivers.
  • The vehicle may exhibit unusual behavior, such as rolling backwards on an incline, indicating that the parking brake is not holding as it should.

Possible Causes

Most common causes of C0A8C (ordered by frequency):

  1. The most common cause of the C0A8C code is a faulty electronic parking brake module, which has a likelihood of around 60%. This can happen due to wear and tear over time or exposure to moisture.
  2. A second cause could be a wiring issue between the EPB module and the main control module, leading to communication failures. This is often due to damaged connectors or frayed wires.
  3. A third potential cause is software glitches within the vehicle's control systems, which can sometimes be resolved with a simple software update performed at a dealership.
  4. Less common but serious issues include physical damage to the parking brake actuator, which may require replacement and can be costly.
  5. Rarely, issues with the vehicle's battery or electrical systems can cause erroneous readings and trigger the C0A8C code, necessitating a thorough electrical inspection.

C0A8C Repair Costs

Cost Breakdown by Repair Type

Electronic Parking Brake Module Replacement

Replacing the faulty electronic parking brake module to restore proper function.

  • Total: $300 - $600
  • Success rate: 90%
Wiring Repair

Repair or replacement of damaged wiring or connectors affecting the EPB system.

  • Total: $150 - $300
  • Success rate: 75%
Software Update

Performing a software update to resolve communication issues in the control systems.

  • Total: $100 - $200
  • Success rate: 85%
Money-Saving Tips for C0A8C
  • Start with the most common and least expensive repairs first
  • Use GeekOBD APP to confirm diagnosis before replacing expensive parts
  • Consider preventive maintenance to avoid future occurrences
  • Compare prices for OEM vs aftermarket parts based on your needs
  • Address the issue promptly to prevent more expensive secondary damage

Diagnostic Steps

Professional C0A8C Diagnosis Process

Follow these systematic steps to accurately diagnose C0A8C. Each step builds on the previous one to ensure accurate diagnosis.

Step 1: Step 1: Initial visual inspection - Check for obvious signs like damaged wiring, loose connections, or corrosion around the electronic parking brake components (5-10 minutes)

Step 1: Initial visual inspection - Check for obvious signs like damaged wiring, loose connections, or corrosion around the electronic parking brake components (5-10 minutes).

GeekOBD APP Tip: Use GeekOBD APP to monitor real-time data during this diagnostic step for accurate results and professional-grade analysis.
Step 2: Step 2: OBD2 scan with GeekOBD APP - Retrieve all codes and freeze frame data to understand the fault context and confirm the presence of the C0A8C code (10-15 minutes)

Step 2: OBD2 scan with GeekOBD APP - Retrieve all codes and freeze frame data to understand the fault context and confirm the presence of the C0A8C code (10-15 minutes).

GeekOBD APP Tip: Use GeekOBD APP to monitor real-time data during this diagnostic step for accurate results and professional-grade analysis.
Step 3: Step 3: Component testing - Use a multimeter or specific diagnostic tools to test the electronic parking brake module and associated wiring for proper functionality (20-30 minutes)

Step 3: Component testing - Use a multimeter or specific diagnostic tools to test the electronic parking brake module and associated wiring for proper functionality (20-30 minutes).

GeekOBD APP Tip: Use GeekOBD APP to monitor real-time data during this diagnostic step for accurate results and professional-grade analysis.
Step 4: Step 4: System function test - Verify proper operation of the parking brake system after any repairs and clear the codes to ensure no further issues are present (10-15 minutes)

Step 4: System function test - Verify proper operation of the parking brake system after any repairs and clear the codes to ensure no further issues are present (10-15 minutes).

GeekOBD APP Tip: Use GeekOBD APP to monitor real-time data during this diagnostic step for accurate results and professional-grade analysis.
Step 5: Step 5: Road test verification - Drive the vehicle under various conditions to confirm the repair's success and that the parking brake operates correctly (15-20 minutes)

Step 5: Road test verification - Drive the vehicle under various conditions to confirm the repair's success and that the parking brake operates correctly (15-20 minutes).

GeekOBD APP Tip: Use GeekOBD APP to monitor real-time data during this diagnostic step for accurate results and professional-grade analysis.

Important Notes

  • Always verify the repair with GeekOBD APP after completing diagnostic steps
  • Clear codes and test drive to ensure the problem is resolved
  • Address underlying causes to prevent code recurrence

Real Repair Case Studies

Case Study 1: Jeep Cherokee EPB Module Repair

Vehicle: 2017 Jeep Cherokee, 45,000 miles

Problem: Customer reported that the electronic parking brake would not engage properly, and the check engine light was illuminated.

Diagnosis: After scanning with the GeekOBD APP, the C0A8C code was confirmed. A visual inspection revealed corrosion on the parking brake module connectors.

Solution: Replaced the electronic parking brake module and cleaned the connectors. Conducted a function test to ensure successful operation.

Cost: $450 (including parts and labor)

Result: The electronic parking brake functioned properly after the repair, and the check engine light was cleared.

Case Study 2: Dodge Durango Wiring Repair

Vehicle: 2018 Dodge Durango, 30,000 miles

Problem: Owner experienced intermittent parking brake failures and the C0A8C code was present.

Diagnosis: The wiring harness was tested, revealing a frayed wire causing communication issues between the EPB module and control unit.

Solution: Repaired the wiring and resecured all connections. Updated the software of the EPB system as a precaution.

Cost: $200 (including parts and labor)

Result: The parking brake operated normally post-repair, with no further issues detected.

Diagnose C0A8C

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Code Information

Code: C0A8C
System: Chassis (ABS, Steering, Suspension)
Severity: HIGH
Category: Chassis Codes