LEMON Manuals: Even more car manuals for everyone: 1960-2025
Home >> Buick >> 2001 >> Regal LS >> Repair and Diagnosis (Single Page) >> Engine Performance >> System >> Engine Control System Self-Diagnostics - 3.8L >> Diagnostic Tests >> DTC P0404: EGR Open Position Performance >> Code Enable Criteria
April 5, 2026: LEMON Manuals is launched! Read the announcement.

Code Enable Criteria

DTC sets when the difference between EGR position sensor and desired EGR position is more than 15 percent for more than 25 seconds.