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Home >> Nissan-Datsun >> 2003 >> Frontier Base, Automatic >> Repair and Diagnosis >> Engine Performance >> Engine Control Systems >> Engine Controls - Self-Diagnostics >> Diagnostic Tests >> DTC P1148: Closed Loop Control - Bank 1 Or DTC P1168: Closed Loop Control - Bank 2 >> Possible Causes

Possible Causes

Malfunction is detected when fuel injection system does not operate in closed loop. Possible causes are:

NOTE: Before proceeding, ensure battery voltage is more than 11 volts at idle.
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