LEMON Manuals: Even more car manuals for everyone: 1960-2025
Home >> Cadillac >> 1990 >> Seville Base, 4T60/ME9 >> Repair and Diagnosis >> Engine Performance >> System >> Engine Controls - Tests W/Codes >> ECM Trouble Code Charts >> ECM Code EO17: Left Oxygen Sensor Not Ready >> Test Conditions:
April 5, 2026: LEMON Manuals is launched! Read the announcement.

Test Conditions:

Codes EO14, EO15, EO21, EO22, EO26 and EO27 are clear. Coolant temperature greater than or equal to 136°F (58°C). TPS value of 6-30 degrees. Throttle switch open. RPM at least 800.

scientia non olet · About LEMON Manuals