Aftermarket or Factory O2 Sensors - CEL P1051, P1168, P1278 and P1279. - G35Driver
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Aftermarket or Factory O2 Sensors - CEL P1051, P1168, P1278 and P1279.

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Old 03-20-2017, 04:22 PM
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Aftermarket or Factory O2 Sensors - CEL P1051, P1168, P1278 and P1279.

Getting CEL codes P1051, P1168, P1278 and P1279.

Replaced O2 sensors back in November, but still getting rough idle, poor fuel economy and many codes. I believe it was branded "Ultra Power" from RockAuto.

Shop it's currently at recommended a valve cover gasket (recommended by many other shops, known issue) and factory O2 sensors because, "Infiniti is sensitive."

Factory sensors are very expensive.
Getting quotes of ~$500 for valve cover; $750 for O2 sensors.

Open to some other ideas, too!
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Old 03-21-2017, 01:48 AM
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Shop is right about the sensors. It's well known on this forum that OEM is the way to go for few to no issues with new sensors. Some people have purchased aftermarket and had no problems but there are far fewer happy members than unhappy members that did. So we recommend OEM but look around for better pricing. I needed a new cam position sensor bank 1: Nissan wanted $143, Infiniti wants $182 and I found new OEM's on Amazon for $78. Exact same part but a vast discrepancy in pricing.
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Old 03-21-2017, 11:09 PM
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Quote:
Originally Posted by Blue Dream View Post
Shop is right about the sensors. It's well known on this forum that OEM is the way to go for few to no issues with new sensors. Some people have purchased aftermarket and had no problems but there are far fewer happy members than unhappy members that did. So we recommend OEM but look around for better pricing. I needed a new cam position sensor bank 1: Nissan wanted $143, Infiniti wants $182 and I found new OEM's on Amazon for $78. Exact same part but a vast discrepancy in pricing.
Okay!

I saw around that OE could be Bosch or Desno; is it better to just go straight to Infiniti?
Any DIY guides on removal/replacement of them?
They look TOUGH to get to/get torque on them.
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Old 03-22-2017, 01:53 AM
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Just look for genuine Nissan OEM parts wherever you can get them the cheapest. There is a lot of information here and on the internet on how-to replacement procedures.
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Old Yesterday, 07:16 PM
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Originally Posted by Blue Dream View Post
Just look for genuine Nissan OEM parts wherever you can get them the cheapest. There is a lot of information here and on the internet on how-to replacement procedures.
We just picked up the G35 back from the shop who did a full tune-up and valve cover gasket.
They said we could replace some vacuum lines and they marked them for us- but then they ended up needing an extra day and did the lines for us as a courtesy.

We put the G35 up on ramps today and aren't able to get enough leverage on a breaker bar/ratchet to break the O2 sensors loose- up top same thing.

I only have a normal Ridgid Impact Driver, and not a full Impact Wrench.

Any thoughts/ideas?
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