FI LTH check engine light

synolimit

I'll never understand why people don't check the code and post it. Guessing a problem with no code is a needle in a haystack.

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13 370z-

Jordo!

Eh, it's an extra step that many people won't be able to do on their own and/or won't be able to make heads or tails of on their own.

This is one of those only obvious-to-the-cognoscenti kinds of things

I keep a code reader in the car at all times.

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synolimit

Same here but auto parts stores have them. I mean if you have a normal car and you're not a car guy I get it...if you have a Z and just installed a serious part like LTH's it should be pretty obvious.

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13 370z-

Agent K

Well, after 5000 miles on my LTH, the Z threw a code: P015C - O2 Sensor Delayed Response. And it seems like they keep coming. The last one was P015A: O2 Sensor Delayed Response. I've tried a few tricks but non have worked so far. So, I'll keep clearing them until I get a tune from Z1 Motorsport. Also, I didn't use an impact wrench to install mine; no damage to O2 sensors.

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'13 370Z Midnight Blue 6MT / Touring Sport w/nav / PPE Long Tube Racing Headers / FI TDX 10" Resonator w/CF mufflers / K&N Drop-Ins / ZSpeed Underbody Shroud v2 / DRL 'always on' Mod

Rusty

What happens is people use a an impact to loosen/remove the bolts when removing the exhaust before removing the O2 sensors.

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浪人 - 殺し屋
"The Difficult Anytime, The Impossible By Appointment Only"
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Jordo!

That's a primary O2 error on both banks. Can you datalog heater correction with uprev?

Either way, my guess is that you probably need to replace both sensors, although trying a replacement/re-soldering of the wire extenders first is an option...

I recommend getting the Denso part number 234-9104

You will need two -- cheaper than from Nissan and otherwise identical.

You may or may not need fresh wire extenders as well. The plug connectors will probably need to be reused (apparently there are at least two variants on our car...).

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Agent K

Ok. I did a little data logging. The code only pops up when my cars idling. It comes on about once or twice a week. But I usually only drive it on the weekend.

O2 sensor B1, S2:@ idle .02V / @ 3k, 3rd gear .8V

O2 sensor B2, S2:@ idle .02V / @ 3k, 3rd gear .8V

I'm 99.9% sure the Uprev tune will take care on this issue. I plan on getting it early next year. In the meantime, I'll keep clearing the code.

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'13 370Z Midnight Blue 6MT / Touring Sport w/nav / PPE Long Tube Racing Headers / FI TDX 10" Resonator w/CF mufflers / K&N Drop-Ins / ZSpeed Underbody Shroud v2 / DRL 'always on' Mod

Jordo!

What are the heater corrections and voltage readings for S1 on both banks once warmed up... S2 is post cat.

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Enjoy it. Destroy it.