Nissan Sentra manuals

Nissan Sentra Service Manual: P1148  Closed loop control

DTC Logic

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

Diagnosis Procedure

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.

Refer to EC-94, "DTC Index".

P1078 EVT Control position sensor
DTC Logic DTC DETECTION LOGIC DTC No. CONSULT screen terms (Trouble diagnosis content) DTC detecting condition Possible cause P1078 EXH TIM SEN/CIRC-B1 (Exhaust val ...

P117A AIR Fuel ratio
DTC Logic DTC DETECTION LOGIC NOTE: If DTC P117A is displayed with other DTC, first perform the trouble diagnosis for the other DTC. Refer to EC-94, "DTC Index". DTC No. CON ...

Other materials:

Front combination lamp
Exploded view Large cover (not serviceable) Small cover (not serviceable) Front combination lamp Halogen lamp bulb (high beam) Turn signal lamp bulb Turn signal lamp bulb socket LED harness connector Halogen lamp bulb (high beam) harness connector Halogen lamp bulb (low b ...

Front drive shaft
6M/T 6M/T : Exploded View (LH) Front drive shaft Nut retainer Cotter pin Molykote M77 Front 6M/T : Removal and Installation (LH) NOTE: When removing components such as hoses, tubes, lines, etc., cap or plug openings to prevent fluid from spilling. REMOVAL Remove the ...

Periodic maintenance
FUEL SYSTEM Inspection Inspect fuel lines, fuel filler cap, and fuel tank for improper attachment, leakage, cracks, damage, loose connections, chafing or deterioration. Engine Fuel line Fuel tank If necessary, repair or replace damaged parts. Quick Connector CAUTION: After c ...

В© 2014-2023 Copyright www.nisentra.com