I need help..... check engine light......stage III
#1
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So my check engine light came on I would say two days after installing APR Stage III and the code that came up is a "catalyst system efficiency below threshold" what does that exactly mean. Do I not have my cat. bolts tight enough? What do you guys think? Any help would be much apriciated.
#2
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and you should be good to go. When you start the car cold if you don't let it idle or drive like a total granny (not advising to abuse the car before fully warmed) it likely won't 'come back'. Some folks never get that code .. others do from time to time.
#3
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it isnt anything to worry about. Clear the code. You may want to check a couple of things though.
-do you have the latest engine code?
-are your 02 sensors screwed into the cat well?
-Get yourself signed up for the stage III forum
-do you have the latest engine code?
-are your 02 sensors screwed into the cat well?
-Get yourself signed up for the stage III forum
#4
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and it always seems to come up when I have been driving it for a little bit. I am DBW and I have the CH box if that is what you mean by latest engine codes. I will double check my O2 sensors, but I think they should be good, I have tryed to e-mail the guy about the SIII forum but it tells me that my e-mail was not sent so I dont know.
#5
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Just means the cat isn't heating up as fast as it should. Since you have the high flow cat. Doesn't affect anything.
To some people the light is a pain. To me it isn't.
jaime
To some people the light is a pain. To me it isn't.
jaime
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#8
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the nDBWs aren't as prone to tossing that code if a test pipe is run. The 1/8th pipe does have a second bung...correct?
#9
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The CEL popped on after about 30 minutes and has been on since. I asked Rob at MP to clear the codes when i was in for something or other, but it was staring me in the face.
Test pipe has both o2 bungs, and the o2s are in.
I VAG'd it with Skabaru and saw it was the cat error, so its not another code.
Funny because MB has the same setup but no CEL.
I need to emulate it even after i do the cat because id rather wire in an emulator to turn off the CEL rather than run o2 wires down to a repositioned cat (why bother with more wires) only to have that trigger because its still a HFC, after all.
Any ideas let me know![Smile](https://www.audiworld.com/forums/images/smilies/smile.gif)
Cheers,
Sameer
Test pipe has both o2 bungs, and the o2s are in.
I VAG'd it with Skabaru and saw it was the cat error, so its not another code.
Funny because MB has the same setup but no CEL.
I need to emulate it even after i do the cat because id rather wire in an emulator to turn off the CEL rather than run o2 wires down to a repositioned cat (why bother with more wires) only to have that trigger because its still a HFC, after all.
Any ideas let me know
![Smile](https://www.audiworld.com/forums/images/smilies/smile.gif)
Cheers,
Sameer
#10
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if you drive around 2500rpms its will happen more. try to keep them over 3k. also buy a emulator for 20 bucks and the problem will go away.