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Home >> Nissan-Datsun >> 2016 >> Sentra SL >> Repair and Diagnosis >> Engine Performance >> System >> Engine Control System (DTCS) (2 Of 3) >> DTC/Circuit Diagnosis >> DTC P1148: Closed Loop Control >> DTC Logic >> DTC Detection Logic
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DTC Detection Logic

NOTE:

DTC P1148 is displayed with DTC for A/F sensor 1.

When the DTC is detected, perform the trouble diagnosis of DTC corresponding to A/F sensor 1.

DTC No. CONSULT screen terms
(Trouble diagnosis content)
DTC detecting condition Possible cause
P1148 CLOSED LOOP-B1
(CLOSED LOOP-B1)
The closed loop control function does not operate even when vehicle is being driven in the specified condition.
  • Harness or connectors

    (A/F sensor 1 circuit is open or shorted.)

  • A/F sensor 1
  • A/F sensor 1 heater