98 Chevrolet Tahoe P0404 Code: Exhaust Gas Recirculation Circuit Range/Performance Fix

Model: 98 Tahoe Fault Code: P0404 Posted: 2005-06-05 21:27

Anyone know how to diagnose and fix P0404 - Exhaust Gas Recirculation (EGR) Circuit Range/Performance fault on a 1998 Chevrolet Tahoe? I've searched online but found limited information. The code resets every 100 miles consistently, which suggests an underlying issue. My engine runs smoothly under normal conditions, but the recurring P0404 code is concerning. What are common causes and solutions for this specific fault on a 1998 Tahoe? Help appreciated. John