Engine Controls - Oxygen Sensor Torque Precaution

Classification: EF&EC94-012

Section: Engine Control System

Reference: TECHNICAL BULLETIN NTB94-070

Models: 1995 Maxima, 240SX

Date: July 12, 1994

1995 MAXIMA AND 240SX REAR O2 SENSOR TORQUE PRECAUTION

APPLIED MODEL:
1995 (A32) Maxima
1995 (S14) 240SX

SERVICE INFORMATION

Some vehicles may experience a check engine light on with a code for the rear O2 sensor. This might have been caused by damage to the rear O2 sensor from over tightening. If your diagnosis confirms that the rear O2 sensor needs to be replaced, do not over torque the replacement rear O2 sensor.

Excessive torque will internally damage the sensor causing it not to function or to have a reduced service life.

SERVICE PROCEDURE

The correct torque for the (S14) 240SX and (A32) Maxima rear O2 sensors is 13-17, (1.8-2.4), ft.lb., (Kg-m).

CAUTION:
DO NOT OVER TORQUE

The recommended installation tool is a 17 mm O2 sensor socket, such as a Kent Moore P/N: J36470.

PARTS INFORMATION

DESCRIPTION PART QUANTITY

Oxygen sensor - Rear (240SX) 22690-70F00 1
Oxygen sensor - Rear (Maxima) 22690-40U21 1