P04DA

Symptoms

• Unstable engine idling
• Power reduction
• Increased fuel consumption
• Check Engine light comes on

Causes

• EGR valve stuck open
• Clogged EGR channels
• EGR solenoid valve malfunction
• Problems with wiring harness or contacts
• Malfunction of the absolute pressure (MAP) sensor or mass air flow (MAF) sensor

How to Fix

1. Check the condition of the EGR valve and its electrical connections
2. Clean or replace EGR valve if necessary
3. Check the EGR system channels for blockages
4. Check the operation of the MAP and MAF sensors
5. Reset the error and check if it returns

Related codes

Error P04DA by Vehicle Brand