Heated Oxygen Sensor 1 Heater

WARNING: This page is about a different car, the 2004 Nissan Sentra. However, it is still accessible from the selected car via links, so may be relevant.

Check resistance between HO2S1 terminals as follows.

Fig 1: Checking Resistance Between HO2S1 Terminals
Courtesy of NISSAN MOTOR CO., U.S.A.

Fig 2: HO2S1 Terminals Resistance Chart
Courtesy of NISSAN MOTOR CO., U.S.A.
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.