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Home >> Cadillac >> 1990 >> Seville Base, 440T4/ME9 >> Repair and Diagnosis >> Engine Performance >> System >> Engine Controls - Tests W/Codes >> ECM Trouble Code Charts >> ECM Code EO38: Open Mat Sensor Circuit >> Test Conditions:

Test Conditions:

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

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