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Home › Cadillac › 1986 › Seville › Repair and Diagnosis › Engine Performance › System › DFI ECM Tests W/Codes › Diagnosis & Testing › Hard Code E015 - Open Coolant Sensor Circuit › Test Conditions:

Test Conditions:

Codes "E037" and "E038" clear.
MAT sensor value greater than or equal to 41°F (5°C).