01 Volvo's Diesel Exit: A Sign of the Times or a Mistake? • 02 Feeling the Heat? Troubleshoot Your Car's AC System Problem… • 03 Why Some Cars Are Cheap to Buy but Expensive to Maintain • 04 ECU Tuning 101: Everything You Need to Know • 05 Charging Anxiety vs. Green Future: Why Americans Aren't Buy… • 06 Mechanics Admit They're Surprised How Many Owners Don't Kno… • 07 Signs of a Failing Transmission Control Module (TCM) • 08 A Comprehensive Guide to Different Types of Automotive Bulbs • 09 From Tires to Driveshafts: An Expert Explains Why Your Car … • 10 Why Does Your Car Make Noise Even After You Turning It Off? •

DTC codes / U02xx · Lost communication with a control module / U02A8

U02A8Lost Communication With Engine Sound Control 2

U02A8 is a generic communication fault indicating that a control module on the vehicle's network has lost contact with the Engine Sound Control 2 module, which is responsible for generating or shaping engine sound inside the cabin. The computer sets this code when it stops receiving the periodic status messages that the sound control module is programmed to broadcast over the CAN bus.

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