Quick Answer
U019D means: U019D indicates a communication error between vehicle control modules, particularly the BCM and PCM.
Can I drive with U019D? Immediate attention is recommended to prevent further electrical system issues.
Common Questions
What does U019D mean and how does it affect my car?
U019D indicates a communication failure between the BCM and PCM, leading to potential issues with electronic functions and overall vehicle performance. If unresolved, it can cause safety risks, such as malfunctioning lights or stalling engines.
What are the most common causes of U019D and how much does it cost to fix?
The most common causes include damaged wiring and faulty connectors, with repair costs ranging from $150 to $800 depending on the specific issue. Regular maintenance can help prevent these problems.
Can I drive my car with U019D or should I stop immediately?
While you may be able to drive your vehicle, it is not recommended due to potential safety risks. It's best to address the issue promptly to avoid further complications.
How can I diagnose U019D myself using GeekOBD APP?
Using the GeekOBD APP, you can connect to your vehicle's OBD2 port and run a diagnostic scan to retrieve the U019D code. Look for additional codes that may provide context and check the freeze frame data for conditions when the code triggered.
What vehicles are most commonly affected by U019D?
U019D is frequently seen in 2015-2018 Ford F-150 and 2016-2018 Chevrolet Silverado models, among others that rely heavily on electronic communication systems.
How can I prevent U019D from happening again?
Regular inspections of wiring and connectors, along with timely software updates for your vehicle's control modules, can help prevent recurrence of the U019D code.
What is U019D?
The diagnostic trouble code (DTC) U019D indicates a communication issue between the vehicle's control modules, specifically noting that the body control module (BCM) is unable to communicate with the powertrain control module (PCM). This problem can manifest in various ways, impacting the vehicle's performance and functionality. When this code triggers, it often leads to symptoms such as malfunctioning lights, issues with central locking systems, or even engine performance problems. The underlying cause is typically a fault in the wiring, connectors, or the modules themselves, which can lead to a failure in functions like automatic door locking or the operation of the vehicle's electronic components. It's crucial for car owners to address this issue promptly, as ignoring it can lead to further complications or safety risks while driving. The code is often seen in vehicles that rely heavily on electronic control systems, making it more prevalent in newer models. Therefore, understanding U019D is essential for maintaining your vehicle's reliability and safety.
System: U - Network (Communication, CAN Bus)
Symptoms
Common symptoms when U019D is present:
- The check engine light remains illuminated, indicating potential electrical issues that need immediate attention.
- Malfunctioning electronic components, such as windows that won't operate or doors that won't lock or unlock properly, disrupting convenience.
- Inconsistent engine performance, including hesitation or stalling, which can lead to unsafe driving conditions.
- Failure of the vehicle's remote start feature, indicating a communication breakdown between modules.
- Erratic behavior of dashboard lights, such as flickering or complete failure, reflecting issues with the vehicle's electrical system.
Possible Causes
Most common causes of U019D (ordered by frequency):
- Wiring issues account for approximately 60% of U019D codes. Frayed, corroded, or damaged wires can interrupt communication between the BCM and PCM.
- Faulty connectors are another common cause, making up about 25% of cases. Loose or corroded connectors can prevent the modules from communicating effectively.
- A malfunctioning body control module itself could also trigger a U019D code, making up around 10% of occurrences. Regular diagnostics and checks can prevent this.
- Less common issues include software glitches within the modules, which can cause temporary communication failures.
- Rarely, a complete failure of the powertrain control module may lead to U019D, requiring costly replacements or reprogramming.
U019D Repair Costs
Cost Breakdown by Repair Type
Wiring Repair
Repair or replace damaged wiring that is causing communication issues.
- Total: $150 - $500
- Success rate: 90%
Connector Replacement
Replace faulty connectors to restore proper communication between modules.
- Total: $100 - $300
- Success rate: 85%
BCM Replacement
Replace the body control module if it is malfunctioning.
- Total: $300 - $800
- Success rate: 80%
Money-Saving Tips for U019D
- 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 U019D Diagnosis Process
Follow these systematic steps to accurately diagnose U019D. 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: 2016 Ford F-150 U019D Repair Case
Vehicle: 2016 Ford F-150, 80,000 miles
Problem: Customer experienced intermittent engine stalling and malfunctioning dashboard lights.
Diagnosis: A thorough diagnostic revealed corroded wiring leading to the BCM.
Solution: Replaced damaged wiring and cleaned connectors.
Cost: $250 (including parts and labor)
Result: Customer reported all systems functioning correctly after repair.
Case Study 2: 2017 Chevrolet Silverado U019D Issue
Vehicle: 2017 Chevrolet Silverado, 60,000 miles
Problem: Remote start feature failed to operate and check engine light was on.
Diagnosis: Found a faulty body control module during diagnostic checks.
Solution: Replaced the BCM and reprogrammed it to vehicle specifications.
Cost: $700 (including parts and labor)
Result: Remote start and all electronic functions restored, customer satisfied.