Quick Answer
U0853 means: U0853 indicates a communication error between vehicle control modules.
Can I drive with U0853? Address immediately to prevent further vehicle issues.
Common Questions
What does U0853 mean and how does it affect my car?
U0853 signifies a communication error between vital control modules in your vehicle. If ignored, it can lead to performance issues, erratic driving behavior, and potentially, safety concerns. The vehicle may struggle with starting, experience inconsistent engine performance, or show multiple warning lights on the dashboard.
What are the most common causes of U0853 and how much does it cost to fix?
Common causes include damaged wiring (60% likelihood), control module failures, or software glitches. Repair costs can range from $150 for wiring repairs to over $1200 for module replacements, depending on the severity and necessary parts.
Can I drive my car with U0853 or should I stop immediately?
It's advisable to stop driving if you encounter U0853 as it may affect critical vehicle functions and safety. Continuing to drive could lead to further damage and costly repairs.
How can I diagnose U0853 myself using GeekOBD APP?
Using the GeekOBD APP, you can perform a quick scan to detect the U0853 code and any other codes present. Look for freeze frame data to understand the conditions under which the code triggered, and follow the app's guidance to troubleshoot specific components.
What vehicles are most commonly affected by U0853?
U0853 is frequently seen in 2015-2018 Chevrolet Silverados and GMC Sierras, along with certain models from Ford and Dodge during the same years. Always check for recalls or Technical Service Bulletins (TSBs) related to communication issues.
How can I prevent U0853 from happening again?
Regular inspections of your vehicle's wiring and connectors, avoiding waterlogged areas, and ensuring software updates are performed can help prevent U0853. Keeping an eye on warning lights and addressing issues promptly can also mitigate future problems.
What is U0853?
The diagnostic trouble code U0853 indicates a communication issue between different modules in your vehicle, particularly the vehicle control modules. When this code appears, it usually points to a problem with the LIN (Local Interconnect Network) communication line. This can mean that one of the modules isn't receiving or sending data properly, which may affect various systems in your vehicle, including the engine management, transmission, and even safety systems like ABS. For drivers of 2015-2018 Chevrolet Silverados and GMC Sierras, experiencing this code can lead to symptoms like erratic performance, warning lights illuminating on the dashboard, or in some cases, the inability to start the vehicle. Ignoring this code can lead to more significant issues, as it may prevent the modules from functioning correctly, affecting vehicle reliability and safety. If you're seeing U0853, it’s essential to address it promptly to avoid further complications and ensure your vehicle operates smoothly.
System: U - Network (Communication, CAN Bus)
Symptoms
Common symptoms when U0853 is present:
- Check engine light illuminates and stays on, signaling a potential issue with the vehicle's communication system.
- Erratic behavior of the vehicle's systems, such as unexpected engine shutdowns or transmission shifting problems, which can confuse the driver.
- Decrease in fuel economy, as the engine may not be running optimally due to the communication failure, leading to a potential drop of 10-15%.
- Inability to start the vehicle, which could leave you stranded if the communication failure affects critical start-up functions.
- Unusual warning lights on the dashboard, such as ABS or traction control indicators, which may illuminate due to communication breakdown.
Possible Causes
Most common causes of U0853 (ordered by frequency):
- The most common cause of U0853 (about 60% likelihood) is a damaged or corroded wiring harness related to the communication line, which can lead to intermittent or failed signals between modules.
- A second common cause is module failure itself, where one of the communication modules is defective, leading to a complete breakdown in communication.
- Another potential cause is software issues within control modules, which can be resolved with software updates from manufacturers.
- Less commonly, a short circuit in the wiring can cause communication failure, which may require extensive diagnostics to locate.
- A rare but possible cause includes environmental factors, such as water intrusion that damages electronic components and wiring, leading to failures.
U0853 Repair Costs
Cost Breakdown by Repair Type
Wiring Harness Repair
Repair or replace damaged wiring harness connected to control modules.
- Total: $150 - $400
- Success rate: 85%
Control Module Replacement
Replace faulty control module responsible for communication failure.
- Total: $500 - $1200
- Success rate: 90%
Software Update
Perform necessary software updates to modules to fix communication issues.
- Total: $100 - $200
- Success rate: 70%
Money-Saving Tips for U0853
- 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 U0853 Diagnosis Process
Follow these systematic steps to accurately diagnose U0853. 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 multimeter or specific diagnostic tools to test suspected components (20-30 minutes)
Step 3: Component testing - Use 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 Harness Repair on 2016 Chevrolet Silverado
Vehicle: 2016 Chevrolet Silverado 1500, 80,000 miles
Problem: Customer reported check engine light and erratic engine performance.
Diagnosis: Using the GeekOBD APP, the U0853 code was retrieved. A visual inspection revealed a damaged wiring harness.
Solution: Repaired the damaged wiring and secured connections. Cleared the code afterward.
Cost: $250 (includes labor and parts)
Result: Vehicle performance returned to normal, with no recurrence of the code.
Case Study 2: Control Module Replacement on 2017 GMC Sierra
Vehicle: 2017 GMC Sierra 1500, 60,000 miles
Problem: Customer experienced starting issues and multiple dashboard warning lights.
Diagnosis: Scanned the vehicle with GeekOBD APP and confirmed U0853. Module testing indicated a faulty control module.
Solution: Replaced the faulty control module and updated the software.
Cost: $950 (includes part and labor)
Result: Vehicle started reliably post-repair, and warnings cleared.