DTC U107600 Local Data Bus 2 Electrical Malfunction, Causes, Symptoms, Diagnosis, and Complete Fix Guide

May 14, 2026 tiwaricar

Learn everything about DTC U107600 Local Data Bus 2 Electrical Malfunction (Active/Static). Discover the causes, symptoms, CAN bus failures, diagnostic methods, repair solutions, and prevention tips for modern vehicles.

DTC U107600 Local Data Bus 2 Electrical Malfunction (Active/Static

Modern vehicles depend on electronic communication systems to allow different control modules to exchange data quickly. When this network fails, multiple systems in the vehicle may not work correctly. One key communication-related fault code is DTC U107600, which stands for Local Data Bus 2 Electrical Malfunction.

This trouble code shows that one of the vehicle’s internal communication networks, usually related to the CAN Bus (Controller Area Network) system, has found an electrical issue affecting data transmission between modules.

The fault may show as Active/Static, indicating that the problem is present and continuously detected by the control unit.

What Does DTC U107600 Mean?

The U107600 trouble code refers to an electrical problem in Local Data Bus 2. Electronic control modules can’t communicate properly due to voltage issues, short circuits, wiring damage, corrosion in connectors, or faulty control modules.

In modern vehicles, several systems connect through communication buses, including:

Engine Control Module (ECM)
ABS Module
Transmission Control Module (TCM)
Airbag System
Steering Module
Infotainment System
Gateway Module
Body Control Module (BCM)

When communication becomes unstable or interrupted, the vehicle stores the U107600 code.

Understanding “Active/Static” Status

Active Fault

An active fault means the electrical malfunction happens during vehicle operation.

Static Fault

A static fault means the issue stays stored and is consistently detected after several ignition cycles. This usually indicates:

Permanent wiring damage
Failed CAN bus communication
Defective control module
Power supply interruption

Main Causes of DTC U107600

Several electrical and communication issues can trigger this fault code.

Damaged CAN Bus Wiring

Broken, cut, pinched, or melted CAN High and CAN Low wires are common causes.

Common Reasons U107600 Local Data Bus

Rodent damage
Accident repairs
Engine heat damage
Poor aftermarket installations

Short Circuit to Ground or Power

If communication wires touch battery voltage or chassis ground, the network communication becomes unstable.

Possible Causes

Exposed wiring
Water intrusion
Connector contamination

Faulty Control Module

A defective module can disrupt the entire data network.

U107600 Local Data Bus Common Suspect Modules

BCM
ABS module
Gateway module
Transmission module

Sometimes one failed module blocks communication for all other modules.

Low Battery Voltage

Weak battery voltage can cause unreliable communication between control units.

Symptoms of Low Voltage

Multiple warning lights
Random communication faults
Intermittent module shutdowns

Corroded Connectors

Moisture inside connectors raises electrical resistance and causes communication failure.

Corrosion Areas

Under seats
Engine bay connectors
ABS module plugs
Fuse box connections

Faulty Gateway Module

U107600 Local Data Bus The gateway module controls communication between multiple CAN networks. If it fails, Local Data Bus communication may stop entirely.

Symptoms of DTC U107600

Vehicles with this fault may display multiple electrical problems.

Common Symptoms U107600 Local Data Bus

Warning Lights
Check Engine Light
ABS Warning
Airbag Warning
Steering Warning
Transmission Fault Message
Electrical Malfunctions
Power steering failure
Infotainment rebooting
Windows or locks malfunctioning
Instrument cluster glitches
Starting Problems
No crank condition
Intermittent starting
Engine shutdown
Communication Errors

Diagnostic scanners may have trouble communicating with some modules.

Vehicles Commonly Affected by U107600 Local Data Bus

The U107600 communication fault can show up in many modern vehicles, including:

Volkswagen
Audi
Skoda
BMW
Mercedes-Benz
Hyundai
Kia
Ford
Toyota
Jeep
Nissan

Luxury vehicles with complex electronic networks are more prone to CAN communication faults.

How CAN Bus Communication Works

The CAN Bus system uses two communication wires:

CAN High
CAN Low

These wires continually exchange digital signals between modules.

Normal CAN Voltage

CAN High ≈ 2.5V to 3.5V
CAN Low ≈ 2.5V to 1.5V

If voltage becomes abnormal due to a wiring or module failure, communication stops and U107600 may appear.

Step-by-Step Diagnosis of U107600

Step 1: Scan All Modules

Use a diagnostic scanner to check:

Communication status
Additional fault codes
Missing modules

Multiple communication faults usually indicate network failure.

Step 2: Check Battery Voltage

Low voltage can create false communication errors.

Normal Battery Values

Engine OFF: 12.4V to 12.8V
Engine Running: 13.5V to 14.5V

Step 3: Inspect CAN Bus Wiring

Carefully inspect:

Harness damage
Burn marks
Pinched wires
Loose connectors

Pay close attention near:

Firewall
ABS module
Under battery tray

Step 4: Check CAN Resistance

Using a multimeter:

Normal Resistance

Approximately 60 Ohms across CAN High and CAN Low.

Abnormal Readings

120 Ohms = open circuit
0 Ohms = short circuit

Step 5: Disconnect Modules One by One

A faulty module may disrupt the network.

Disconnect suspected modules individually and check for restored communication.

Step 6: Check for Water Damage

Inspect:

BCM area
Floor carpets
Fuse box
Trunk electronics

Water intrusion is a major cause of network failure.

Repair Solutions for U107600

Repair Damaged Wiring

Replace or fix damaged CAN bus wires using proper soldering and insulation methods.

Clean Corroded Connectors

Use electrical contact cleaner and repair damaged terminals.

Replace Faulty Modules

If a module internally shorts the communication line, you may need to replace it.

Programming or coding may also be necessary after replacement.

Battery and Charging System Repair

Replace weak batteries and fix alternator charging issues.

Software Updates

Some manufacturers provide ECU software updates to correct communication instability.

Estimated Repair Cost

Repair Type Estimated Cost

Wiring Repair $50 to $300
CAN Bus Diagnosis $80 to $250
Module Replacement $300 to $1500
Battery Replacement $100 to $300
Gateway Module Replacement $400 to $1200

Costs vary depending on vehicle make and complexity.

Can You Drive With U107600?

Driving with this fault is risky because communication failures may affect:

ABS braking
Airbag operation
Steering assistance
Transmission shifting
Engine management

In severe cases, the vehicle may suddenly fail to start or stall.

Immediate diagnosis is strongly recommended.

Prevention Tips

Maintain Battery Health

Weak voltage often triggers network faults.

Avoid Poor Electrical Modifications

Incorrect aftermarket installations can harm CAN communication lines.

Protect Against Water Intrusion

Keep drains and seals clean.

Regular Wiring Inspection

Inspect wiring near hot engine components and moving parts.

Conclusion

DTC U107600 Local Data Bus 2 Electrical Malfunction (Active/Static) is a serious communication-related fault that indicates electrical problems within the vehicle’s CAN Bus network. Since modern vehicles rely on constant communication between multiple control modules, even a small wiring issue or failing module can cause major system malfunctions.

Common causes include damaged wiring, low battery voltage, corroded connectors, faulty control modules, or gateway communication failure. Proper diagnosis requires advanced scanning tools, CAN resistance testing, voltage checks, and careful wiring inspection.

U107600 Local Data Bus Ignoring this fault can lead to severe drivability and safety problems, including ABS failure, transmission issues, airbag malfunction, or complete no-start conditions. Early diagnosis and professional repair are essential for restoring reliable vehicle communication and performance.

How to fix DTC P0117 Engine Coolant Temperature Sensor Circuit Low Active Static

Fixing P0016 in Skoda, VW, and Audi: A Step-by-Step Diagnosis