01 C0035 - Left Front Wheel Speed Circuit Malfunction • 02 How to Choose the Right Spark Plug Gap for Your Engine • 03 Understanding Oxygen Sensors and Their Impact on Your Car • 04 10 Engine-Killing Behaviors Every Car Owner Must Avoid • 05 Your ultimate checklist for buying a used car with confiden… • 06 Hyundai Santa Fe: The Spacious and Stylish SUV • 07 The $30 Device That's Making Car Thieves Invisible to Police • 08 P0015 B Camshaft Position - Timing Over Retarded (Bank 1) • 09 How do driverless cars navigate without road markings? • 10 The Most Common Car Repair Mistake and How to Avoid It •

DTC codes / U02xx · Lost communication with a control module / U02BD

U02BDLost Communication With Night Vision Control Module

U02BD is a generic communication fault indicating that the engine control module or another primary module on the controller area network (CAN) bus has stopped receiving messages from the night vision control module. The computer detects a loss of expected periodic data from that module, often setting the code after a timeout or missing message counter threshold is exceeded.

SystemNetwork
Code typeGeneric (all makes)
SeverityLow
Fix difficultyIntermediate
AreaLost communication with a control module

Guidance is general and written for all OBD-II vehicles. Exact tests and values vary by model, so confirm the fault before replacing parts.

Running on fumes Free guides aren't free to make. Top up the tank. Any amount, one time. Fuel the Garage