CEL, P0134, Just installed W/B and DSM-AFC

[Knox Joe]

I just installed;

Perrin Exhaust
DSM-AFC1
AEM Widband
Autometer Boost Gauge
Greddy TT
O2 Simulator
http://www.voodooboost.com/images/o2sim2_tn.jpg

No light for days, than all of a sudden CEL. went to Autozone to get it checked...

As the title say's it's;
P0134
O2 Sensor
CKT No Activity
(Bank 1 Sensor 1)

[kudakev615]

looks like the o2 sim isnt doing its job, or the ecu is smart enough to see around it. what type of sim is that? is it similar to the spark plug non fouler mod?

[Knox Joe]

Yeah, just like it. I bought two non-foulers today (18mm, right?) to put em on tommorow once I get her on the lift.

Oh, and I had a shop do the whole install.

[Captain KRM P5]

do not use an o2 simulator on these cars, they can be bad juju. non foulers work much safer and better.

[Knox Joe]

do not use an o2 simulator on these cars, they can be bad juju. non foulers work much safer and better.
I'll put them on tommorow.(bang)

I thought this was basically the same exact thing. (shrug)

[funktownp5]

Sounds like to me that they installed it on the wrong O2. It should be sensor 2

for the secondary O2. And i have been using an electronic O2 simulator for

two years without a problem.

[Knox Joe]

If it was on the secondary o2 my wideband wouldn't be reading right. Would it?

[funktownp5]

:confused:

[Knox Joe]

What I'm calling an o2 simluator is the pic in the first post. I think it's just the non fouler idea, and the shop who sells them calls them o2 simulators. I am not using any type of electronic o2 sim.

Okay, now that that is clear.

I don't believe my W/B would be reading right if it was plugged into the non fouler. Am I correct?

Edit: I looked at the website. It is a non-fouler, so why am I getting this code with it installed?

[funktownp5]

No it would not be reading right at all. You have a total of 3 O2 sensors

hooked up right? I would make sure that the non-fouler is hooked up to

the secondary O2

[Captain KRM P5]

if you are using a wideband make sure you have three slots for o2 sensors - one for the primary sensor, one for the secondary sensor and one for the wideband sensor. typically the term o2 simulator is used for a device that alters or sends a false signal to the computer to make it think the emissions system is in good order. now, the non-foulers should be installed on the secondary sensor, not the first. the first sensor is your vehicle's air/fuel sensor that allows the ecu to determine fuel mixture for the given conditions. the second sensor basically tells the car if the catalytic converter is still there and working right. you cannot leave or remove the second sensor from the car just to put in a wideband sensor, you will get a CEL.

[Knox Joe]

If it goes to the secondary one, why am I tripping a code for bank 1 sensor 1?

There were two bungs on the Perrin exhaust. Is there another bung somewhere besides the Perrin?

[funktownp5]

What i was asking, was the install correct. If the non-fouler was installed

on the primary sensor then it would give you this CEL.

[Knox Joe]

What i was asking, was the install correct. If the non-fouler was installed

on the primary sensor then it would give you this CEL.


Aaaah, Ill go look, BRB.

[Knox Joe]

It's installed on the first bung on the Perrin exhaust. so after the s and j pipes.

[funktownp5]

Ok sounds like the shop installed it correctly, have you cut/spliced any of

the first O2 sensor wires. If not they the sensor may be bad and have to

be replaced.

[Knox Joe]

Ok sounds like the shop installed it correctly, have you cut/spliced any of

the first O2 sensor wires. If not they the sensor may be bad and have to

be replaced.

Would the O2 sensor wires be spliced since they installed a DSM AFC?

[Captain KRM P5]

so you have an o2 sensor in the stock manifold, an o2 sensor in the exhaust and a wideband sensor in the exhaust? if the sensor is installed correctly and plugged in correctly and recieving a "no activity" code i would say either the sensor is bad or the wiring is damaged and preventing the sensor from transmitting a signal to the ecu. if you plug in a scantool you should be able to read how much if any voltage the sensor is sending.

[Knox Joe]

so you have an o2 sensor in the stock manifold, an o2 sensor in the exhaust and a wideband sensor in the exhaust? if the sensor is installed correctly and plugged in correctly and recieving a "no activity" code i would say either the sensor is bad or the wiring is damaged and preventing the sensor from transmitting a signal to the ecu. if you plug in a scantool you should be able to read how much if any voltage the sensor is sending.


Thanks.

I'm gonna have my buddy at the performance shop look into it this afternoon.

[Knox Joe]

Okay, here's an update.

We removed the stock primary sensor and it was white in some parts of the tip.

What would cause it to be white like that?


Anyways, changed it out with a Bosch and now the car runs like a champ. It was limping around everytime I wasn't in boost before, but now she's better than ever.

[Knox Joe]

CEL again!!!!

What could be going on?

I got it read again and it was the same code. I'm starting to think it's the mechanics wiring.

[funktownp5]

Was it a plug and play replacment sensor or did he have to cut.

[Knox Joe]

Was it a plug and play replacment sensor or did he have to cut.
Had to cut.

[funktownp5]

The wiring may not be right. I think that the wiring is: Blue=signal,

white=ground, black=power, black=heater.

[Knox Joe]

But that wouldn't exlpain why I get this after the install, fix the supposed problem, then trip the same code. I doubt it is the sensor now.

I guess he'll just have to fix it. I've paid him nearly $500 so far.

[evilmonkeyMSP]

rewire the 02 sensor back to how it stock and buy yourself some non foulers and use that trick. I have been running catless w/ non foulers for 40k miles with no CEL.

[Knox Joe]

rewire the 02 sensor back to how it stock and buy yourself some non foulers and use that trick. I have been running catless w/ non foulers for 40k miles with no CEL.
No, it's the primary sensor, on the manifold. I'm allready running a non-fouler on the second sensor. no prob there.

[evilmonkeyMSP]

oh, ok. gotcha :)

[Knox Joe]

So, no ideas?

[Fudgie]

HAve the connections at the ecu been checked in regards to the afc? Going from memory, I think the O2 wire gets interupted. I would double check that and make sure there aren't shitty connections on both sides of the wire being as this only started following the afc install.

[Knox Joe]

HAve the connections at the ecu been checked in regards to the afc? Going from memory, I think the O2 wire gets interupted. I would double check that and make sure there aren't shitty connections on both sides of the wire being as this only started following the afc install.
I'm gonna check all that today. thanks Fudgie.

[Knox Joe]

It was his wiring guys. So he basically cost me an o2 sensor, and the cost to install it for nothing.

[Metallic36]

Bumping this up.. I'm having the same issue but have checked my wiring at the AFC and redid it also, still the same code, replaced O2 sensor too.