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Home >> Nissan-Datsun >> 2007 >> X-Trail LE >> Repair and Diagnosis >> Engine Performance >> System >> Engine Control System - DTCS P1148 To P2138 >> DTC P1148 Closed Loop Control >> On Board Diagnosis Logic

On Board Diagnosis Logic

This self-diagnosis has the one trip detection logic. 

DTC DETECTING CONDITION CHART

DTC No. Trouble diagnosis name DTC detecting condition Possible cause
P1148
1148		 Closed loop control function The closed loop control function does not operate even when vehicle is driving in the specified condition.
  • The heated oxygen sensor 1 circuit is open or shorted.
  • Heated oxygen sensor 1
  • Heated oxygen sensor heater
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