Altima 2.5 SL L4-2.5L (QR25DE) (2002)
Oxygen Sensor: Testing and Inspection
Component Inspection
HEATED OXYGEN SENSOR 1 HEATER
1. Check resistance between HO2S1 terminals as shown.
2. If NG, replace heated oxygen sensor 1.
CAUTION:
-
Discard any heated oxygen sensor which has been dropped from a height of more than 0.5 m (19.7 in) onto a hard surface such as a concrete
floor; use a new one.
-
Before installing new oxygen sensor, clean exhaust system threads using Oxygen Sensor Thread Cleaner tool J-43897- 18 or J-43897-12 and
approved anti-seize lubricant.