DNA MOTORING HEADERS - Installation Complete! - Product Update - Page 3 - Lexus IS Forum
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post #31 of 40 (permalink) Old 08-25-2017, 01:32 PM
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Check your connections on the MAF and throttle body. As for O2 codes. Simulatorwould be my suggestion.
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post #32 of 40 (permalink) Old 08-25-2017, 02:34 PM Thread Starter
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Wow...Ok clearly forgot to plug back in one of the sensors on the intake.
- Not the MAF Sensor but I think some EVAP Connector with 2 pins. VSV Connector I think.

Hopefully that will take care of the throttle codes.


Thanks SolarYellow!

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post #33 of 40 (permalink) Old 08-31-2017, 06:55 AM Thread Starter
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Ok well all Throttle and MAF Codes went away. Hooray!

Now I'm left with a silly P0135 Code for B2S1. (Now im sort-of scratching my head as its the only code being thrown)
- So weird, as I still have not installed the anti-fouler for b2s2 but yet I'm popping a P0135 Code for a B2S1 Location???

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post #34 of 40 (permalink) Old 08-31-2017, 12:11 PM
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That would be the heater circuit in sensor. Most common fault is that heater circuit is broken inside sensor.

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post #35 of 40 (permalink) Old 09-01-2017, 09:39 AM Thread Starter
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lol of course just my luck. The most PITA one to remove.

Well, I suppose I'll look at purchasing a new 02 for this location and see if I can get at it without having to remove much. I'll update once again after I have a new one to install.

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post #36 of 40 (permalink) Old 09-14-2017, 11:01 AM Thread Starter
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Looks like I may need to do some wiring and resplicing, however.... before I do:

Below are the current codes on the car:

P0153
HO2S Circuit Slow Response, Bank 2 Sensor 1

P0156
HO2S Sensor Circuit Malfunction, Bank 2 Sensor 2

I would think if the B2S1 location is getting a slow read is it really the secondary 02 (post cat) that is reading too soon.
Therfore has the 02 sensor really gone bad, or should I just add an anti-fouler to B2S2 Location and create the timing difference.

Again, only anti-fouler currently installed is on B1S2. (I think this is why the only error I have is on Bank 2)

Logic tells me adding the anti-fouler to B2S2 Location should work but just looking for a second opinion before I physically start to replace 02 sensors.

Cheers!
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post #37 of 40 (permalink) Old 09-19-2018, 04:08 PM Thread Starter
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OK. I so need to close out this thread!!

Sooooooo sorry it took so long! I actually lost my PASSWORD and it took FOREVER to figure it out!

Anyways, Running Completely catless - NO CEL Lights. Welded in a flex pipe to reduce the staunchness in the exhaust (not even the slighted rub or rattle now). Replaced basically every gasket seal in the exhaust to eliminate leaks. Relocated the B2S2 Bung location so the O2 wasnt hanging off my car and re-ran the anti-foulers.

Viola! Catless Exhaust / no LEAKS / NO CEL / NO SIM KIT!

- The last thing I was thinking about doing was running some heat shield wrap on them but for now I am going to heat shield the intake and install a vented hood. Yes! Sweet Sweet Carbon! Cheers Mates!
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post #38 of 40 (permalink) Old 03-30-2019, 04:26 AM
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Quote:
Originally Posted by Posh469 View Post
OK. I so need to close out this thread!!

Sooooooo sorry it took so long! I actually lost my PASSWORD and it took FOREVER to figure it out!

Anyways, Running Completely catless - NO CEL Lights. Welded in a flex pipe to reduce the staunchness in the exhaust (not even the slighted rub or rattle now). Replaced basically every gasket seal in the exhaust to eliminate leaks. Relocated the B2S2 Bung location so the O2 wasnt hanging off my car and re-ran the anti-foulers.

Viola! Catless Exhaust / no LEAKS / NO CEL / NO SIM KIT!

- The last thing I was thinking about doing was running some heat shield wrap on them but for now I am going to heat shield the intake and install a vented hood. Yes! Sweet Sweet Carbon! Cheers Mates!
Did you have an issue with the header hitting the motor mount? Also where did you relocate b2s2 to? Thanks!
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post #39 of 40 (permalink) Old 04-01-2019, 07:27 AM Thread Starter
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Originally Posted by Battlez2rr View Post
Did you have an issue with the header hitting the motor mount? Also where did you relocate b2s2 to? Thanks!
No clearance issues at all. I'll have to search and see if I have photos still - or I'll get out there today and try and crawl under the car for you and grab a pic. I'll update you soon!

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post #40 of 40 (permalink) Old 04-04-2019, 08:17 AM Thread Starter
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Originally Posted by Battlez2rr View Post
Did you have an issue with the header hitting the motor mount? Also where did you relocate b2s2 to? Thanks!
Haven't forgotten about you - I cant locate the photos and my car is in the body shop this week. I will have the car up on a lift the week of the 15th (hopefully) and can probably grab a photo then and post it when I have a moment. Sorry for the delay!

Cheers!

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