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Home >> Nissan-Datsun >> 2006 >> Sentra SE-R >> Repair and Diagnosis >> Engine Performance >> System >> Engine Control System - DTCS P1148 To P2A00 (Qr25DE) >> DTC P1148 Closed Loop Control >> On Board Diagnosis Logic
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On Board Diagnosis Logic

This self-diagnosis has the one trip detection logic. 

DTC DETECTING CONDITION AND POSSIBLE CAUSE

DTC No. Trouble diagnosis name DTC detecting condition Possible cause
P1148 1148 Closed loop control function The closed loop control function for bank 1 does not operate even when vehicle is driving in the specified condition.
  • The air fuel ratio (A/F) sensor 1 circuit is open or shorted.
  • Air fuel ratio (A/F) sensor 1
  • Air fuel ratio (A/F) sensor 1 heater

DTC P1148 is displayed with another DTC for air fuel ratio (A/F) sensor 1. Perform the trouble diagnosis for the corresponding DTC.

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