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Home >> Nissan-Datsun >> 2013 >> Pathfinder S, FWD >> Repair and Diagnosis >> Engine Performance >> System >> Engine Control System (Diagnostic Codes & Symptom Tests) >> DTC/Circuit Diagnosis >> DTC P1148, P1168: Closed Loop Control >> DTC Logic >> DTC Detection Logic

DTC Detection Logic

NOTE: DTC P1148 or P1168 is displayed with another DTC for A/F sensor 1.
Perform the trouble diagnosis for the corresponding DTC.
DTC No. CONSULT screen terms (Trouble diagnosis content) DTC detecting condition Possible cause
P1148 CLOSED LOOP-B1 (Closed loop bank 1) The closed loop control function for bank 1 does not operate even when vehicle is being driven in the specified condition.
  • Harness or connectors (The A/F sensor 1 circuit is open or shorted.)
  • A/F sensor 1
  • A/F sensor 1 heater
P1168 CLOSED LOOP-B2 (Closed loop bank 2) The closed loop control function for bank 2 does not operate even when vehicle is being driven in the specified condition.
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