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Home >> Infiniti >> 2003 >> FX45 >> Repair and Diagnosis >> Engine Performance >> System >> Engine Controls - Self-Diagnostics >> Diagnostic Tests >> DTC P1148: Closed Loop Control Function (Bank 1) Or DTC P1168: Closed Loop Control Function (Bank 2) >> Possible Causes

Possible Causes

Malfunction is detected when either left or right bank does not operate in closed loop even when vehicle is driven in specific condition. Possible causes are:

NOTE: DTC P1148 and P1168 have one trip detection logic.
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