secretstar07979 Posted October 28, 2016 Author Share Posted October 28, 2016 So I had the code read today. The fault was the Oxygen Sensor behind the Cat Converter. The guy at the garage was somewhat unhelpful when I asked what causes this by saying "people shouldn't mess with their cars" (mine has an aftermarket ISIS single exhaust. He's knocked the fault off now so the engine light has gone off but he say's it may reappear. So if it does come back on how do I go about fixing this? My car has sport cats. Quote Link to comment Share on other sites More sharing options...
Rock_Steady Posted October 28, 2016 Share Posted October 28, 2016 The only way you can get rid of it once and for all is to get an Uprev remap. £400 . Quote Link to comment Share on other sites More sharing options...
secretstar07979 Posted October 28, 2016 Author Share Posted October 28, 2016 Or change the exhaust system? Which I plan to do anyway. Quote Link to comment Share on other sites More sharing options...
davey_83 Posted October 28, 2016 Share Posted October 28, 2016 ^ yeah back to Nissan OE cats............ I would as first action buy some O2 spacers for the sensors Quote Link to comment Share on other sites More sharing options...
secretstar07979 Posted October 28, 2016 Author Share Posted October 28, 2016 OK, What are they and what do they do? Do you know how much are they fitted? I have the car in for a full service a week on Wednesday. I could have them installed then. Quote Link to comment Share on other sites More sharing options...
Lewis_UK Posted October 28, 2016 Share Posted October 28, 2016 OK, What are they and what do they do? Do you know how much are they fitted? I have the car in for a full service a week on Wednesday. I could have them installed then. PM ZMANALEX, May have some good used or even brand new ones. 1 Quote Link to comment Share on other sites More sharing options...
Rock_Steady Posted October 31, 2016 Share Posted October 31, 2016 ^ yeah back to Nissan OE cats............ I would as first action buy some O2 spacers for the sensors Ahhh, but there's no guarantee the spacers will work. They didn't for me or for many others. i think you'd have to have the name Mr. Jammy Mclucky balls if it does work. Quote Link to comment Share on other sites More sharing options...
longsh07 Posted October 31, 2016 Share Posted October 31, 2016 I had endless problems with the CEL coming on when running high flow cats even after remap. Gave up in the end and reverted to stock. The gains were totally not worth the hassle IMHO Sent from my iPad using Tapatalk 1 Quote Link to comment Share on other sites More sharing options...
Tricky-Ricky Posted October 31, 2016 Share Posted October 31, 2016 You can run without the cat sensors, they are only used for air fuel adjustment as a back up should the main sensors fail.......if you can put up with the CEL. Quote Link to comment Share on other sites More sharing options...
davey_83 Posted October 31, 2016 Share Posted October 31, 2016 Its ok saying to put up with the CEL light, however what if the ecu is showing the CEL for a separate issue that you then ignore? Quote Link to comment Share on other sites More sharing options...
Tricky-Ricky Posted October 31, 2016 Share Posted October 31, 2016 Yes that's true, as i had an ECU data-scan connected full time i could always check there where no other codes present, however i only ever checked maybe once a month. Quote Link to comment Share on other sites More sharing options...
Zeezeebaba Posted October 31, 2016 Share Posted October 31, 2016 Uprev map can turn these off. Worked for me on HFCs no problems since. 1 Quote Link to comment Share on other sites More sharing options...
samsniss350z Posted November 3, 2016 Share Posted November 3, 2016 As ZeeZeebaba says, Uprev remap can turn off the CEL permanently, usually the CEL comes on when fitting Decats without spacers as the higher flow of exhaust gas tricks the O2 sensors into thinking that its failed thus causing the CEL to light up. The pedal dance may get rid of this, as it resets the ECU, some owners are lucky and it never returns, other owners suffer the CEL coming on regularly. Quote Link to comment Share on other sites More sharing options...
Recommended Posts
Join the conversation
You can post now and register later. If you have an account, sign in now to post with your account.