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Home >> Nissan-Datsun >> 2002 >> Sentra SE-R, Automatic >> Repair and Diagnosis >> Engine Performance >> System >> Engine Controls - Self-Diagnostics - 2.5 >> Diagnostic Tests >> DTC P1148: Closed Loop Control Function >> Probable Cause

Probable Cause

Malfunction is detected when ECM does not operate in closed loop. Possible causes are:

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