Engine Controls - MIL ON/Low Power/Poor Running

Classification:
ECO2-018

Reference:
NTBO2-082

Date:
August 12, 2002

LOW POWER/POOR RUNNING AND/OR MEL "ON" WITH FRONT 02 SENSOR/TRANSMISSION GEAR DTC STORED

APPLIED VEHICLE:
2002 Altima (L31) with QR25DE ONLY
All 2002 Sentra (B15) with QR25DE ONLY

APPLIED VIN:
2002 Altima:
Vehicles built before 1N4AL11D42C712182

APPLIED DATE:
2002 Altima:
Vehicles built before July 24, 2002

SERVICE INFORMATION

If a 2002 Altima/Sentra has:

^ Low engine power

^ Poor engine running

AND/OR

^ One or more of front 02 sensor DTC P0031/P0132/P0133/P0134/P1144 stored

^ One or more of transmission DTC P0731/P0732/P0733/P0734 stored,*

refer to the Service Procedure below to resolve this incident, if it should occur.

* The transmission DTCs can be the result of low power/poor running engine conditions.

SERVICE PROCEDURE

1. Inspect the top, front exhaust manifold heat shield:





A. If the heat shield looks like the one in Figure 1a, replace the heat shield with the new one listed in the Parts Information table.

NOTE:
The new heat shield shown in Figure 1b is an important part of the repair to prolong the life of the replacement oxygen sensor.

B. If the heat shield looks like the one in Figure 1b, the heat shield does NOT need to be replaced. Proceed to step 2 (below).

2. Replace the front oxygen sensor with the one listed in the Parts information table.

3. Use CONSULT-II to Erase DTC P0031, P0132, P0133, P0134, P1144, P0731, P0732, P0733, P0734 from the vehicle's ECM (if these codes are stored).





PARTS INFORMATION

CLAIMS INFORMATION





Submit a Primary Failed Part (PP) line claim using the claims coding shown.