O2 Sensors vary greatly in price, I need one.

artificialist · Jun 17, 2014

Originally Posted By: jrustles

Installed the pair of working Densos in a Pontaic G6, they work GREAT except for OBD2's horrible whineyness- OBD2 is unhappy that the heater circuits on the Densos are 14ohm, instead of 5ohm. So despite perfect sensor output and improved fuel economy, it throws a CEL. Eventually I'll purchase a match for that NTK (with correct resistnce) and install that pair.

So be careful with closeouts @ Rock Auto!

Which model of Pontiac G6 do you have? My dad has a 2007 with the base 2.4L engine. I replaced the oem NTK sensor with a Denso at 80,000 miles, and he hasn't has a single problem. He has over 100,000 miles now.

jrustles · Jun 17, 2014

Originally Posted By: artificialist
Originally Posted By: jrustles

Installed the pair of working Densos in a Pontaic G6, they work GREAT except for OBD2's horrible whineyness- OBD2 is unhappy that the heater circuits on the Densos are 14ohm, instead of 5ohm. So despite perfect sensor output and improved fuel economy, it throws a CEL. Eventually I'll purchase a match for that NTK (with correct resistnce) and install that pair.

So be careful with closeouts @ Rock Auto!

Which model of Pontiac G6 do you have? My dad has a 2007 with the base 2.4L engine. I replaced the oem NTK sensor with a Denso at 80,000 miles, and he hasn't has a single problem. He has over 100,000 miles now.

It's an 05 V6 with the LX9 engine. Yes the branding is not a problem, just the era vehicle they were designed for (diff. heater resistance).

Since the days of one wire unheated narrow band lambda's, the sensor output has always been the same 0-1V, the difference is, pre-96?? HEGOs had higher resistance heaters, not by much, and the Densos I installed are for a 95 Accord

So the big whiney OBD2 is crying about it, despite perfect vehicle operation.

All heated narrowbands are interchangeable, snip the plug off and they're all instantly universal HEGOs.

The only difference is the heater resistances. Currently, 4-6ohms seems nominal for OBD2. The original (1991+) HEGOs are around 14ohms as the norm. I've seen them as low as 1 ohm, in a 2000 vehicle.