U05A0

Invalid Data Received from Evaporative Emission System Leak Detection Control Module

Severity

⚠️ Medium

Can you drive?

Yes, but get it checked soon

Approx. repair cost

$33–167 (est.)

Symptoms

Check Engine Light Is On
Possible problems starting the engine
Increased fuel consumption
Unstable engine idling
Errors in the EVAP system during diagnosis

Causes

EVAP leak control module malfunction
Open or short circuit in wiring harness
Poor contact in module connectors
Module power problems
Software error in ECU

How to Fix

Check the integrity of the wiring harness to the EVAP module
Check connections and contacts in connectors
Check the power supply and ground of the module
Test or replace EVAP leak control module
Update ECU firmware if necessary

Related codes

U05A1 U05A2 P0440