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Home >> BMW >> 1994 >> 850CSi >> Repair and Diagnosis >> Engine Performance >> System >> Engine Controls - Self Diagnostics >> Diagnostic Tests >> DTC 77: Intake Air Temperature Sensor >> Explanation
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DTC 77: Intake Air Temperature Sensor: Explanation

This defect is stored when shorts or breaks occur at the temperature sensor or on its supply wires. A prerequisite for detecting a break is a time interval of 3 minutes after start and idling for at least 30 seconds.