Decat lambda sensor question

[Ibiza125]

Hi,

I have a decat on my car, and therefore don't have a 2nd lambda sensor. Because of this my engine light is constantly on.

My question is, is there anyway of stopping the code from reappearing and turning on my light? As my dash is like a christmas tree..!


Thanks,

 

[BeartheBruce]

Only suggestion would be to contact a chip tuner who might be able to change all the diagnostic capabilities of the ECU to ignore the faults thrown by poor fuel mixture. Short of a major reprogram of the ECU, I do not beleive there to be any means to "ignore" the downstream O2 sensor.

 

[wilky87]

Apparently^^^ you can get a fooler, it basically tells the ecu everything is fine from the cat, this is what i was told when i enquired about a decat, but they wanted to charge £150 for the de-cat and the fooler :O

 

[wilky87]

ohh and ibiza 125, where did you get your decat and could it fit a mk4 fr?

 

[kineticz]

You can either get a sensor 'wayne block' from somewhere to draw the sensor away from the flow of the exhaust gases, or you will need it mapped out.

 

[Ibiza125]

The car has been mapped by Custom Code. I asked about the lambda after and he said he couldn't do it...

So basicly I either need a "fooler" or to get something changed...

 

[kineticz]

It needs to be stage 2 custom mapped, a generic stage 1 won't do it.

 

[wilky87]

It's got nothing to do with the map, you need a fooler or maybe vagcom could be programmed to ignore it

 

[Ibiza125]

It needs to be stage 2 custom mapped, a generic stage 1 won't do it.

Look at the sig buddy it is a custom stage 2

It's got nothing to do with the map, you need a fooler or maybe vagcom could be programmed to ignore it

That's why I'm asking if there is a way

 

[Big_daddy]

what is exactly your fault code?

 

[Ibiza125]

what is exactly your fault code?

17526 - Oxygen (Lambda) Sensor Heating: B1 S2: Open Circuit

 

[BeartheBruce]

17526 - Oxygen (Lambda) Sensor Heating: B1 S2: Open Circuit

This fault can only be caused by failed wiring, failed sensor, or failed drive circuit in the ECU. You can check the resistance using an ohm meter and a wiring diagram for the car.

 

[m0rk]

I have a decat on my car, and therefore don't have a 2nd lambda sensor. Because of this my engine light is constantly on.

My question is, is there anyway of stopping the code from reappearing and turning on my light? As my dash is like a christmas tree..!

Why can't you just plug it in like you're meant to?

 

[Big_daddy]

17526 - Oxygen (Lambda) Sensor Heating: B1 S2: Open Circuit

That some wrong with the sensor, arent suppose get fault code; like cat below effecency when its decatted

 

[cupraBHP]

that what i thought mork. even with de cat you can still put the lambada sensor in the exhauste. just drill a ho ll in it and weld it up ...lol

 

[m0rk]

That some wrong with the sensor, arent suppose get fault code; like cat below effecency when its decatted

He says he's removed it....

 

[Ibiza125]

Yeah I don't have a 2nd sensor in. It has the hole for it but it is just blanked off at the moment.

If I do put it in then it will just come up with a code for the cat being knackered, ie not there.

 

[m0rk]

It won't have the cat below efficiency code if you have had it removed as part of CC stage 2 though...

 

[Big_daddy]

Yeah I don't have a 2nd sensor in. It has the hole for it but it is just blanked off at the moment.

If I do put it in then it will just come up with a code for the cat being knackered, ie not there.

It won't have the cat below efficiency code if you have had it removed as part of CC stage 2 though...

True say, worth a try.

Something think about, 2years back, my leon post lambda wasnt pluggedd in and was just tucked aside but it was decatted too. Had same fault code.
So i drilled a hole and refitted it, then got the fault code internal resistance too high
Replaced the sensor twice, even tried the spacers but iit still reruned, ending up leaving it, although non of them fault triggered the eml.

 

[kineticz]

Erm. The second sensor CAN be mapped out with a custom map... Or a Wayne angle block. Those are the only two ways I've ever heard of.