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:

Making a call
To make a call from a phone connected to the vehicle’s Bluetooth® Hands-Free Phone System: NOTE: Available commands different if system is in Manual Control mode. See “Manual Control” in this section for more information. Press the button. The system will prompt you for a command. ...

P0998 Shift solenoid F
DTC Logic DTC DETECTION LOGIC DTC CONSULT screen terms (Trouble diagnosis content) DTC detection condition Possible causes P0998 SHIFT SOLENOID F (Shift Solenoid F Control Circuit Low) The TCM low brake solenoid valve current monitor reading is 200 mA or ...

Service equipment
RECOVERY/RECYCLING RECHARGING EQUIPMENT Be certain to follow the manufacturer’s instructions for machine operation and machine maintenance. Do not introduce any refrigerant other than that specified into the machine. ELECTRICAL LEAK DETECTOR Be certain to follow the manufacturer’s ...

© 2014-2025 Copyright www.nisentra.com