FixVault
Home
›
Buick
›
2003
›
Century Base
›
Repair and Diagnosis
›
Engine Performance
›
System
›
Engine Controls Self-Diagnostics - 3.1L Engine
›
Diagnostic Tests
›
DTC P1404: EGR Closed Position Performance
›
Test Description
Test Description
The number below refers to the step number on the diagnostic procedure.
1
- This step verifies that the malfunction is present.