Replacing Front Oxygen Sensor

NOTE:
This repair should ONLY be applied when:

^ A DTC of P0134 or P0154 alone is present, without any other DTC code. DO NOT replace if DTC P0134 and P0154 are together.

Emissions Certification

Determine the vehicle's Emissions Certification (California or Federal):

1. All 2001 Maxima vehicles have California emissions certification.

2. For 2000 Maxima vehicles, you need to determine if the vehicle is certified for California or Federal emissions.





^ Check the Emissions Certification Label on the underside of the engine hood to verify if the certificate is for California emissions (see Figure 14).

^ If there is no mention of California on the label, the vehicle is certified for Federal emissions.

3. Proceed to and perform Front Oxygen Sensor Replacement.

4. Replace the incident bank front oxygen sensor as indicated by the DTC on the CONSULT-II self-diagnosis printout.

^ Refer to the vehicle's Emissions Certification Label.

^ Refer to the PARTS INFORMATION section for correct part numbers.

IMPORTANT:
The correct sensor must be identified and replaced. Use the following information to identify the sensor:

A. The Bank-1 sensor has a black harness and a part number prefix of "2269[0]."











^ See Figure 15, and Figures 16 and 17 shown for sensor/sensor connection location and identification.

B. The Bank-2 sensors have a blue harness and a part number prefix of "2269[1]."

^ See Figure 15, and Figures 16 and 17 for sensor/sensor connection location and identification.

5. Proceed to and perform ECM Part Number Check and Update.