U02A7

Lost Communication With Engine Sound Control 1

Severity

✅ Low

Can you drive?

Yes, but get it checked soon

Approx. repair cost

$56–167 (est.)

Symptoms

Changing the sound of the engine
Lack of active sound
The Check Engine light comes on
Possible errors in related systems
Reduced functionality of the multimedia system

Causes

Broken or damaged wiring harness
Engine Sound Control Module Malfunction
Problems with module power or grounding
Software failure in the ECU
Corrosion of contacts in connectors

How to Fix

Check the integrity of the wiring harness to the sound module
Check power supply and grounding of the module
Inspect and clean connector contacts
Flash or update ECU software
Replace engine sound control module if necessary

Related codes

U02A6 U02A8 U02A9