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Home › Cadillac › 1986 › Seville › Repair and Diagnosis › Engine Performance › System › DFI ECM Tests W/Codes › Diagnosis & Testing › Hard Code EO37 - Shorted Mat Sensor Circuit › Test Conditions:

Test Conditions:

Codes "EO14" and "EO15" are clear.
Coolant sensor less than or equal to 221°F (105°C).