Engine Controls - MIL ON/Multiple DTC's Set: Overview

Classification:
EC04-001

Reference:
NTB04-025

Date:
February 19, 2004

2004 MAXIMA AND QUEST (4AT & 6MT MODELS ONLY); MIL ON P0171/P0174/P12731 P1283

APPLIED VEHICLE:
2004 Maxima (A34) with 4-speed A/T and 6-speed M/T
2004 Quest (V42) with 4-speed A/T

NOTE:
This bulletin does NOT apply to vehicles with 5-speed A/T. See NTB04-027.

IF YOU CONFIRM:

The following DTC code(s) are stored:

^ DTC P0171/P1273

OR

^ DTC P0174/P1283

NOTE:
This bulletin does NOT apply if you have P0171 and P0174 together or you have P1273 and P1283 together.

ACTIONS:

1. Make sure the engine does not have any intake or exhaust leaks.

2. Replace the Air/Fuel Sensor (if no intake or exhaust leaks are found).

^ Codes P0171 and/or P1273; replace Bank 1 sensor.

^ Code P0174 and/or P1283; replace Bank 2 sensor.

3. If needed, reprogram the ECM (see the Service Procedure, step 3).

IMPORTANT:
The purpose of "ACTIONS" (above) is to give you a quick idea of the work you will be performing. You MUST closely follow the entire Service Procedure as it contains information that is essential to successfully completing this repair.





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