Nissan Versa (N17): P1148 closed loop control

Nissan Versa 2nd generation (N17) Service Manual / Engine / Engine control system (EC) / 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.	Trouble diagnosis (Trouble diagnosis content)	DTC detecting condition	Possible cause
P1148	CLOSED LOOP-B1 (Closed loop control function)	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, "DTC Index".

P1078 EVT control position sensor

P117A air fuel ratio

Other materials:

Battery
Keep the battery surface clean and dry. Clean the battery with a solution of baking soda and water. Make certain the terminal connections are clean and securely tightened. If the vehicle is not to be used for 30 days or longer, disconnect the negative (-) battery terminal cable to ...

Wheel alignment
Inspection DESCRIPTION CAUTION: The adjustment mechanisms of camber and toe-in are not included. If camber and toe-in is outside the standard, check front suspension parts for wear and damage. Replace suspect parts if a malfunction is detected. Measure wheel alignment under unladen ...

Nissan Versa (N17): P1148 closed loop control

P1078 EVT control position sensor

P117A air fuel ratio

Other materials:

Categories