Quick Answer

C0C51 means: C0C51 indicates a communication issue between vehicle control modules.

Fix: Check and replace faulty components Cost: $150 - $400 Time: 90-180 minutes

Can I drive with C0C51? Address immediately to ensure safety and functionality.

Common Questions

What does C0C51 mean and how does it affect my car?

The C0C51 code indicates a communication failure between the vehicle's control modules, which can impact essential systems like stability control and ABS, potentially leading to reduced vehicle safety and performance.

What are the most common causes of C0C51 and how much does it cost to fix?

Common causes include faulty wiring (60% likelihood), failed control modules (25%), and software glitches (10%). Repair costs can range from $150 for wiring repairs to $1,200 for module replacements.

Can I drive my car with C0C51 or should I stop immediately?

It's advisable to stop driving the vehicle as the C0C51 code indicates potential safety risks related to traction and ABS. Ignoring this code can lead to dangerous driving conditions.

How can I diagnose C0C51 myself using GeekOBD APP?

Use the GeekOBD APP to scan for trouble codes, check live data from the control modules, and review freeze frame data to understand the conditions when C0C51 occurred.

What vehicles are most commonly affected by C0C51?

The C0C51 code is frequently seen in models like the 2016-2020 Ford Explorer, 2017-2020 Ford F-150, and 2018-2020 Ford Edge, particularly those with advanced safety features.

How can I prevent C0C51 from happening again?

Regular maintenance, inspecting wiring and connectors during service, and keeping your vehicle's software updated can help prevent C0C51 from recurring.

What is C0C51?

The diagnostic trouble code (DTC) C0C51 indicates a communication issue in the vehicle's network, particularly between modules responsible for various functions like stability control, traction, and anti-lock braking systems. In simpler terms, this code signifies that the vehicle's onboard computer has detected a fault in the way these modules communicate with each other. This can lead to various performance issues, affecting your car’s stability and safety features. For example, you might notice that your traction control system isn't functioning correctly or that your anti-lock brakes are not engaging as they should. It's crucial to address this issue promptly, as it can compromise your vehicle's handling and increase the risk of losing control in adverse driving conditions. If you own a 2016-2020 Ford Explorer or similar models, understanding this code can help you recognize potential symptoms and take the necessary steps for diagnosis and repair, ensuring your vehicle remains safe and reliable on the road.

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

Symptoms

Common symptoms when C0C51 is present:

  • Check engine light stays on constantly, indicating a persistent issue that requires attention.
  • Traction control light intermittently activates, which may lead to reduced vehicle stability during slippery conditions.
  • Engine performance feels sluggish or unresponsive, particularly during acceleration when the system fails to communicate properly.
  • Anti-lock braking system (ABS) warning light appears, suggesting that the ABS may not engage during emergency stops.
  • Increased fuel consumption, potentially due to the engine running inefficiently as the vehicle struggles with module communication.

Possible Causes

Most common causes of C0C51 (ordered by frequency):

  1. Faulty wiring or connectors between modules (60% likelihood) - This is often the most common cause, where damaged or corroded wires disrupt communication.
  2. Failed control module (25% likelihood) - If one of the control modules is malfunctioning, it can cause communication errors across the system.
  3. Software glitches or outdated firmware (10% likelihood) - Sometimes, simply updating the vehicle's software can resolve communication issues.
  4. Less common but serious cause: A short circuit in the vehicle's electrical system could lead to multiple DTCs, including C0C51, indicating a larger issue.
  5. Rare but possible cause: A faulty power supply or battery issue can impact module communication, but this is less frequent.

C0C51 Repair Costs

Cost Breakdown by Repair Type

Wiring Repair

Repair or replace damaged wiring or connectors that are causing communication issues.

  • Total: $150 - $400
  • Success rate: 85%
Control Module Replacement

Replace the faulty control module that is not communicating properly.

  • Total: $500 - $1,200
  • Success rate: 90%
Software Update

Update the vehicle's software to fix any glitches that may be causing the issue.

  • Total: $100 - $200
  • Success rate: 70%
Money-Saving Tips for C0C51
  • 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 C0C51 Diagnosis Process

Follow these systematic steps to accurately diagnose C0C51. 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 (5-10 minutes)

Step 1: Initial visual inspection - Check for obvious signs like damaged wiring, loose connections, or corrosion (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 (10-15 minutes)

Step 2: OBD2 scan with GeekOBD APP - Retrieve all codes and freeze frame data to understand the fault context (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 suspected components (20-30 minutes)

Step 3: Component testing - Use a multimeter or specific diagnostic tools to test suspected components (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 after repairs and clear codes (10-15 minutes)

Step 4: System function test - Verify proper operation after repairs and clear codes (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 vehicle under various conditions to confirm repair success (15-20 minutes)

Step 5: Road test verification - Drive vehicle under various conditions to confirm repair success (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: Repairing C0C51 in a 2017 Ford Explorer

Vehicle: 2017 Ford Explorer, 75,000 miles

Problem: Customer reported the ABS warning light and a sluggish engine response.

Diagnosis: Performed an OBD2 scan with GeekOBD APP, confirming C0C51 and inspecting wiring.

Solution: Repaired damaged wiring harness connecting the ABS module.

Cost: $300

Result: Vehicle operated normally post-repair, with no warning lights.

Case Study 2: Resolving C0C51 in a 2018 Ford F-150

Vehicle: 2018 Ford F-150, 50,000 miles

Problem: Customer experienced intermittent traction control failures.

Diagnosis: Used the GeekOBD APP to retrieve codes, finding C0C51 alongside a software issue.

Solution: Updated the vehicle's software and reset the system.

Cost: $150

Result: Traction control function restored; no further issues reported.

Diagnose C0C51

Use GeekOBD APP for professional diagnosis!

  • Real-time data monitoring
  • Advanced diagnostic features
  • Step-by-step repair guidance
  • Professional-grade analysis

Code Information

Code: C0C51
System: Chassis (ABS, Steering, Suspension)
Severity: HIGH
Category: Chassis Codes