U030A

Software Incompatibility With Evaporative Emission System Leak Detection Control Module

Severity

⚠️ Medium

Can you drive?

Yes, but get it checked soon

Approx. repair cost

~$167 (est.)

Symptoms

Check Engine Light Is On
Errors in the EVAP system
Increased level of harmful emissions
Failed EVAP system diagnostic tests

Causes

Incompatible ECU software version
Incorrect software update
Incompatible EVAP leak control module
Damage to module software
Problems with communication between modules

How to Fix

Read complete error logs using diagnostic equipment
Check and compare software versions of all related modules
Reflash the problematic module
If necessary, replace the EVAP leak control module
Update ECU software to the latest version

Related codes

U0300 U0301 U030B