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Home >> Cadillac >> 1991 >> Seville Base >> Repair and Diagnosis >> Engine Performance >> System >> Engine Controls - Tests W/Codes >> Diagnostic Tests >> Pcm Code EO38, Open Mat Sensor Circuit >> Test Conditions:

Test Conditions:

Codes EO14 and EO15 are clear and coolant sensor temperature is greater than or equal to 23°F (-5°C).