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:

Engine control system
ENGINE CONTROL SYSTEM : Component Parts Location 1. Mass air flow sensor (with intake air temperature sensor) 2. Electric throttle control actuator (with built in throttle position sensor and throttle control motor) 3. EVAP canister purge volume control solenoid valve 4. Cooling fan mot ...

P0712 Transmission fluid temperature sensor A
DTC Logic DTC DETECTION LOGIC DTC Trouble diagnosis name DTC detection condition Possible causes P0712 Transmission Fluid Temperature Sensor "A" Circuit Low Under the following diagnosis conditions, the A/T fluid temperature identified by TCM is 180C (3 ...

Nissan Versa (N17): P1148 closed loop control

P1078 EVT control position sensor

P117A air fuel ratio

Other materials:

Categories