U0D87 - DTC U0D87 - Understanding the Communication Fault in Your Vehicle’s System

Quick Answer

U0D87 means: DTC U0D87 indicates a communication fault between vehicle control modules.

Fix: Check and replace faulty components Cost: $150 - $600 Time: 90-180 minutes

Can I drive with U0D87? Address immediately to avoid potential vehicle performance issues.

Common Questions

What does U0D87 mean and how does it affect my car?

DTC U0D87 signifies a communication fault among your vehicle's ECUs, which can lead to performance issues like stalling or reduced efficiency. Addressing this issue promptly is crucial for safe driving.

What are the most common causes of U0D87 and how much does it cost to fix?

Common causes include wiring issues, ECU malfunctions, and battery problems. Repair costs can range from $100 for minor wiring repairs to over $1,500 for an ECU replacement.

Can I drive my car with U0D87 or should I stop immediately?

It's best to avoid driving your car if U0D87 is present, as it can lead to unpredictable behavior or safety system failures. Get it diagnosed as soon as possible.

How can I diagnose U0D87 myself using GeekOBD APP?

Using the GeekOBD APP, you can scan for codes, view freeze frame data, and monitor live data streams from your vehicle to help identify the communication fault.

What vehicles are most commonly affected by U0D87?

Models like the 2016-2019 Ford Explorer and 2015-2018 Honda Accord frequently experience U0D87 due to their complex electronic systems.

How can I prevent U0D87 from happening again?

Regular maintenance, including checking electrical connections and updating software, can help prevent U0D87. Ensure to schedule routine inspections of your vehicle's electrical systems.

What is U0D87?

DTC U0D87 is a diagnostic trouble code that indicates a communication issue within the vehicle's control modules. Specifically, it usually points to a fault in the communication network that links various electronic control units (ECUs). This could be due to a failure in wiring, a malfunctioning ECU, or even software issues within the system. When DTC U0D87 appears, it signifies that one or more modules are unable to communicate effectively with each other, which can lead to a range of performance issues. This code is particularly common in modern vehicles that rely heavily on electronic systems for functionality. For instance, cars like the 2016-2019 Ford Explorer and 2015-2018 Honda Accord may experience this code due to their complex networks. Ignoring this code could lead to more significant problems, such as reduced engine performance, issues with safety systems, or even complete system failures. In real-world terms, if you see this code, it’s essential to address it promptly to ensure your vehicle operates safely and efficiently.

System: U - Network (Communication, CAN Bus)

Symptoms

Common symptoms when U0D87 is present:

The check engine light remains illuminated, indicating a persistent issue.
Inconsistent performance, such as engine hesitation or stalling during acceleration, can be felt by the driver.
You may notice a significant drop in fuel efficiency—often around 10-15%—as the vehicle struggles to communicate between systems.
Malfunctions in auxiliary systems, like the ABS or traction control, which may engage unexpectedly.
Dashboard warning lights for various systems may illuminate, indicating a broader issue with vehicle electronics.

Possible Causes

Most common causes of U0D87 (ordered by frequency):

{'description': 'Wiring issues or bad connections are the most common causes associated with a U0D87 code, with a likelihood of about 40%. Corroded connectors or frayed wires can interrupt communication between modules.', 'percentage': '40%'}
{'description': 'A malfunctioning ECU can also trigger this code. If the main control unit fails or has a software issue, it may not send or receive signals correctly. This is less common but can happen in vehicles with outdated software.', 'percentage': '30%'}
{'description': 'Problems with vehicle battery or charging systems can lead to communication faults. A weak battery may not supply enough power for the modules to function correctly, leading to intermittent communication failures.', 'percentage': '15%'}
{'description': 'Less common but serious issues include damaged control modules due to water ingress or physical damage from an accident.', 'percentage': '10%'}
{'description': "Rarely, manufacturing defects in the vehicle's wiring harness can cause U0D87. This could be due to poor insulation or faulty components.", 'percentage': '5%'}

U0D87 Repair Costs

Cost Breakdown by Repair Type

Wiring Repair

Repair or replace damaged wiring and connections.

Total: $150 - $600
Success rate: 85%

ECU Replacement

Replace the malfunctioning ECU if necessary.

Total: $500 - $1,500
Success rate: 90%

Battery and Charging System Check

Test and replace the vehicle’s battery or charging system components.

Total: $100 - $300
Success rate: 80%

Money-Saving Tips for U0D87

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 U0D87 Diagnosis Process

Follow these systematic steps to accurately diagnose U0D87. 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).