Post FI HFCs Install/ SES or CEL Help!!

[eastwest2300]

See pics!!!!


Hey fellas, I need some help, so I had my Fast Intentions Non Resonated HFCs installed about a week ago. I got a couple Service Engine Soon indicators go off. I bought a OBD2 reader.

Here are the codes, if anyone can help, or atleast point me in the right direction as to how I can fix it. I'd love you forever. I took it to the dealer, and they wanted to charge me because my car has been "modified." The mechanic did try to clear the codes, they wouldnt clear.

Any ideas?


P0031 Heater Control Circuit Low (Bank 1, Sensor 1)

P1148 --- 1. Closed Loop. 2. Closed Loop, Bank 1
Fuel Sys 1 -- OL
Fuel Sys 2 -- CL
Calc Load (%) -- 18.8
ECT (Celsius) -- 89
STFT B1 (%) -- 0.0
LTFT B1 (%) -- 0.0
STFT B2 (%) --2.3
LTFT B2 (%) -- 0.0
MAP (kPa) -- 28
Eng RPM -- 663
Veh Speed (km/h) -- 0
Spark Adv -- 9.0
IAT (Celsius) -- 38
TPS (%) --0.8
O2S B1 S2 (V) -- 0.280
STFT B1 S2 (%) -- 99.2
O2S B3 S2 (V) -- 0.280
STFT B3 S2 (%) -- 99.2
Run Time (Sec) -- 177
MIL Dis (km) -- 0
LAMBDA B1 S1 -- 1.002
O2S B1 S1 (V) -- 2.257
LAMBDA B3 S1 -- 0.996
O2S B3 S1 (V) -- 2.207
Command EVAP (%) -- 0.0
Fuel Level (%) -- 100.0
Warm_up DTC Clr -- 0
Clr Dist (km) -- 0
EVAP_VP (Pa) -- 0.0
BARO (Kpa) -- 100
CAT Te 11 (Celsius) -- 20
CAT Te 21 (Celsius) -- 20
ECU Volts (V) -- 14.240
LOAD Value (%) -- 15.7
EQ Ratio -- 0.999
Rel TPS (%) -- 0.0
TPS B (%) -- 0.8
ACC Pedal D (%) -- 0.0
ACC Pedal E (%) -- 0.0
Command TAC (%) -- 0.8
MIL Time -- 0h0m
Clr Time -- 0h0m

***Update 1 January 2013***

[Cristobal09]

may want to post this in the exhaust section for more views...

Intake/Exhaust - Nissan 370Z Forum

[eastwest2300]

Did triple move this? Im sure he did..

[gomer_110]

Just a guess but I'm gonna have to say that your primary bank 1 O2 sensor is either bad or the wiring is messed up. Reason I say this is the P0031 code. Just can't see that popping up unless the wiring or sensor are junk.

[eastwest2300]

Brother, please tell me more, what do I gotta do? what do I gotta check?

[6MT]

Originally Posted by eastwest2300

Brother, please tell me more, what do I gotta do? what do I gotta check?

UpRev.....Uprev....Uprev. Eliminate those O2 sensor inputs to the ECU.

[MJB]

Originally Posted by 6MT

UpRev.....Uprev....Uprev. Eliminate those O2 sensor inputs to the ECU.

You can't eliminate the ones on the exhaust manifolds can you? The code come up as bank 1 sensor 1... isn't that on the manifolds, not the cats?

[eastwest2300]

Originally Posted by MJB

You can't eliminate the ones on the exhaust manifolds can you? The code come up as bank 1 sensor 1... isn't that on the manifolds, not the cats?

I mean, if its a bad sensor on the intake manifold, i wouldnt be surprised, we did everything but nuked that damn demon bolt, it was that bad.

[MJB]

Did these codes pop up right after the install? Sensors could have been damaged during the install. You could get an Uprev tune in which they will delete the loop to the O2 sensors on the cats so you'll never get a code.

[eastwest2300]

yeah man, as soon as we finished the install, turned on the car.. they came right on. I was told to stick some steel wool inside the j-bung of each cat. That unfortunately didnt clear any codes.. ughhh.

[FPenvy]

Originally Posted by eastwest2300

yeah man, as soon as we finished the install, turned on the car.. they came right on. I was told to stick some steel wool inside the j-bung of each cat. That unfortunately didnt clear any codes.. ughhh.

whoever installed it probably damaged the sensor

[eastwest2300]

I may have to look into getting a tune. I would like to fix it without getting to that point, but I might just have to.

[MJB]

Does your cat have O2 sensor anti fouler extenders on them? If not, you could buy some and see if that helps.


*Edit... I just re-read your original post and realized you have FI cats, so you already have the extenders on there. Hopefully the mechanic didn't use any impact/air tools to get your cats off, as that can easily damage the sensors. I'm thinking one of the sensors is damaged and needs to be replaced.

[eastwest2300]

Originally Posted by MJB

Does your cat have O2 sensor anti fouler extenders on them? If not, you could buy some and see if that helps.

Sh!t, Im not sure what that is... damn.

[eastwest2300]

Originally Posted by MJB

Does your cat have O2 sensor anti fouler extenders on them? If not, you could buy some and see if that helps.


*Edit... I just re-read your original post and realized you have FI cats, so you already have the extenders on there. Hopefully the mechanic didn't use any impact/air tools to get your cats off, as that can easily damage the sensors. I'm thinking one of the sensors is damaged and needs to be replaced.

Yeah, we did use impact wrenches. I was told theres o2 sensors obviously on the bottom of the cat, but also 2 in in the exhaust manifold, is that right? (one on each side?)