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EM light/O2 Sensor light back on 3 weeks after remap


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Posted

Hi boys n' girls!

 

After I installed my BuddyClub last year the revs would fluctuate at idle and periodically the management light would come on flagging up O2 sensor problems. I had my DE Zed remapped at TDi 3 weeks ago and this light was cleared.

 

However this last week the engine management light has come back on again showing the same DTC's as before. I've attached a couple of screen grabs from my basic OBD scanner and wonder is if anyone can advise on how I can cure this problem?

 

As well as the BuddyClub I also have HFC's, plenum spacer and performance panel filter. I also have a O2 sensor spacer fitted.

 

Has anyone else had this problem? Is this indicative of an actual problem or just a consequence of the higher airflow from the exhaust? And if so how can I make the light stay off?

 

Thanks :)

 

S.

 

350z%20O2%20Sensor%20Readings.png

 

350z%20Diagnostic%20Codes.png

Posted

Maybe it is actually a faulty lambda sensor. I had one. When it was put on a live diagnostic machine and the engine was revved the readings changed on one sensor alot slower than the one on the other side and that's how it was diagnosed

  • 2 weeks later...
Posted

Thanks for your comments....I thought I'd replied to this a few days back but cant seem to see it :s

 

Alex - I may well be in touch soon re the sensors, will check out prices of new ones and let you know :)

 

Out of interest could I expect to see any difference in performance/mpg/anything once the sensor has been replaced (if indeed it is faulty) or would it just clear the lights on the dash?

 

Thanks again :)

 

S.

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