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Home › Cadillac › 1992 › DeVille Base, 2D Coupe › Repair and Diagnosis › Engine Performance › System › Engine Controls - Tests W/Codes › Pcm Trouble Code Diagnosis › Pcm Code E74, Mat Sensor Signal Interrupt › Failure Conditions

Failure Conditions

MAT signal change of 7 degrees or more in 250 milliseconds (.25 second).

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