LEMON Manuals: Even more car manuals for everyone: 1960-2025

Home >> Saturn >> 2000 >> SW2 Standard >> Repair and Diagnosis >> Engine Performance >> System >> Engine Controls - Self-Diagnostics >> Diagnostic Tests >> DTC P1621: Pcm Long Term Memory Performance >> Diagnostic Procedures

April 5, 2026: LEMON Manuals is launched! Read the announcement.

Diagnostic Procedures

Reprogram PCM. If DTC resets, replace PCM. Program replacement PCM using required equipment.

scientia non olet · About LEMON Manuals