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:

    Fuel pump
    Description *: ECM determines the start signal status by the signals of engine speed and battery voltage. The ECM activates the fuel pump for several seconds after the ignition switch is turned ON to improve engine start ability. If the ECM receives a engine speed signal from the camsh ...

    Parking, license plate and tail lamps are not turned on
    Description The parking, license plate and tail lamps do not turn ON in with any lighting switch setting. Diagnosis Procedure 1.COMBINATION SWITCH (LIGHTING AND TURN SIGNAL SWITCH) INSPECTION Check the combination switch (lighting and turn signal switch). 2.CHECK TAIL LAMP RELAY REQUEST SIGNA ...

    Key slot illumination
    Description Blinks when Intelligent Key insertion is required. Component Function Check 1. CHECK FUNCTION With CONSULT Check key slot illumination KEY SLOT ILLUMI in Active Test mode. Diagnosis Procedure 1. CHECK KEY SLOT ILLUMINATION OUTPUT SIGNAL Check voltage between key slot connector ...

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