Nissan Maxima Service and Repair Manual: P1148, P1168 closed loop control

DTC Logic

DTC DETECTION LOGIC

NOTE: DTC P1148 or P1168 is displayed with another DTC for A/F sensor 1.

Perform the trouble diagnosis for the corresponding DTC.

Nissan Maxima. DTC DETECTION LOGIC

    P1078, P1084 EVT control position sensor
    Description Exhaust valve timing control position sensor detects the concave groove of the exhaust camshaft rear end. This sensor signal is used for sensing a position of the exhaust camshaf ...

    P1211 TCS control unit
    Description The malfunction information related to TCS is transferred via the CAN communication line from "ABS actuator and electric unit (control unit)" to ECM. Be sure to erase the malfuncti ...

    Other materials:

    Optical sensor 
    Description  The optical sensor converts the outside brightness (lux) to voltage and transmits the optical sensor signal to the BCM. Component Function Check  1.CHECK OPTICAL SENSOR SIGNAL BY CONSULT CONSULT Turn the ignition switch ON. Select "OPTICAL SENSOR" of BCM (HEAD LAMP ...

    Seat belt buckle switch signal circuit
    Description Transmits a seat belt buckle switch LH signal to the combination meter. Component Function Check 1. CHECK COMBINATION METER INPUT SIGNAL Start engine. Monitor seat belt warning lamp while fastening and unfastening the driver seat belt. Diagnosis Procedure Regarding Wiring ...

    Seatback pockets
    The seatback pockets are located on the back of the driver's and passenger's seats. The pockets can be used to store maps. WARNING To ensure proper operation of the passenger's NISSAN Advanced Air Bag System, please observe the following items: Do not allow a passenger in the rear se ...

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