Quick Answer
U0698 means: U0698 indicates a communication error between vehicle control modules.
Can I drive with U0698? Immediate attention is required to avoid further complications.
Common Questions
What does U0698 mean and how does it affect my car?
The U0698 code signifies a communication error between the vehicle's control modules. This can result in performance issues, affecting engine response and efficiency. It's important to address this code promptly to prevent further damage or costly repairs.
What are the most common causes of U0698 and how much does it cost to fix?
Common causes of U0698 include faulty wiring, malfunctioning control modules, and poor grounding. Repair costs can range from $150 for wiring repairs to $1,200 for module replacements, depending on the nature of the issue.
Can I drive my car with U0698 or should I stop immediately?
While you may be able to drive the vehicle, it is advisable to stop driving immediately if the check engine light is illuminated and performance is impaired. Continuing to drive could lead to further damage and more expensive repairs.
How can I diagnose U0698 myself using GeekOBD APP?
To diagnose U0698 with GeekOBD APP, start by connecting the app to your vehicle's OBD2 port. Use it to scan for DTCs and analyze freeze frame data for additional context. This will help identify the specific module or area of concern.
What vehicles are most commonly affected by U0698?
U0698 is commonly found in 2015-2019 Ford F-150s, but it can also affect other models from various manufacturers that rely heavily on electronic control modules. Always check for specific recalls or technical service bulletins (TSBs) related to your vehicle.
How can I prevent U0698 from happening again?
Regular maintenance is key to preventing U0698. Ensure all electrical connections are secure, inspect wiring for wear, and keep your software updated. Regularly using diagnostic tools like the GeekOBD APP can help catch issues early.
What is U0698?
The diagnostic trouble code (DTC) U0698 indicates a communication error within the vehicle's network, specifically relating to the communication between different control modules. This code typically means that the Engine Control Module (ECM) or a related module is unable to communicate properly due to issues such as wiring problems, a malfunctioning module, or issues with the vehicle’s internal network. In practical terms, this may lead to various performance issues such as erratic engine behavior, poor fuel economy, or, in some cases, the inability to start the vehicle. When this code is triggered, it can be indicative of a serious problem that needs to be addressed promptly. Vehicle owners should be aware that ignoring this code could lead to further complications down the line, including extensive repairs and increased costs. If you own a vehicle like a 2016 Ford F-150, it's crucial to understand that this code can cause your vehicle to enter 'limp mode' where performance is significantly reduced to protect the engine and transmission from further damage. Therefore, timely diagnostics and repairs are essential to maintain the vehicle's health and performance.
System: U - Network (Communication, CAN Bus)
Symptoms
Common symptoms when U0698 is present:
- Check engine light illuminated on the dashboard, often staying lit until the issue is resolved.
- Engine performance may be erratic, leading to hesitation during acceleration or unusual engine noises.
- Fuel efficiency may decrease significantly, sometimes by as much as 10-15%, affecting overall driving costs.
- In some cases, you may experience difficulty starting the engine, often requiring multiple attempts.
- Other modules may malfunction, such as ABS or traction control systems, causing additional warning lights.
Possible Causes
Most common causes of U0698 (ordered by frequency):
- The most common cause is a faulty wiring connection (60% likelihood), often due to wear and tear or corrosion that disrupts communication between modules.
- A malfunctioning control module (25% likelihood) can cause this code, often requiring replacement or reprogramming to restore function.
- Poor grounding or short circuits (10% likelihood) in the vehicle's electrical system can lead to communication errors, which can often be prevented with regular inspections.
- A software glitch in the vehicle's control systems (3% likelihood) may occasionally trigger this code, usually resolved with a software update.
- Rarely, a complete failure of the onboard diagnostic system (2% likelihood) may occur, requiring extensive diagnostics and possible replacement of multiple components.
U0698 Repair Costs
Cost Breakdown by Repair Type
Wiring Repair
Repair damaged wiring or connections causing communication errors.
- Total: $150 - $300
- Success rate: 85%
Control Module Replacement
Replace faulty control module preventing communication.
- Total: $500 - $1,200
- Success rate: 90%
Software Update
Update software to fix communication issues caused by glitches.
- Total: $100 - $200
- Success rate: 75%
Money-Saving Tips for U0698
- 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 U0698 Diagnosis Process
Follow these systematic steps to accurately diagnose U0698. 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).
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).
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).
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).
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).
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: Wiring Repair on a 2017 Ford F-150
Vehicle: 2017 Ford F-150, 45,000 miles
Problem: Customer reported check engine light and poor acceleration.
Diagnosis: Initial diagnostics revealed a U0698 code, indicating communication issues. A visual inspection showed damaged wiring harness.
Solution: Repaired wiring connections and replaced damaged sections of the harness.
Cost: $250 (includes labor and parts)
Result: Customer reported improved engine performance and no further check engine light.
Case Study 2: Control Module Replacement on a 2016 Chevrolet Silverado
Vehicle: 2016 Chevrolet Silverado, 60,000 miles
Problem: Customer experienced intermittent starting issues and check engine light.
Diagnosis: Diagnostics revealed U0698; further testing indicated control module failure.
Solution: Replaced the faulty control module and reprogrammed it to the vehicle.
Cost: $900 (including parts and labor)
Result: Vehicle started reliably, and the check engine light was resolved.