hi guys I hsve a 2015 blade which runs and drives perfect except under hard acceleration when it looses power and stalls. If I drive and increase throttle grsdually it will redline and go 250kmph without issue but If I try to whack the throttle open it cuts power. I hsve checked the fault codes and it is showing 21 which from what i can find is 02 sensor. I fitted an o2 bypass but fault code will not clear so I am presuming the issue is still present, what else could cause this codd or symptoms?
FWIW I had Fi code 21 on a 2013 model. Fitting an O2 bypass fixed the error, but there were no running issues, just an annoying flashing EML. My thoughts are that a faulty O2 sensor may not actually cause a running issue as they are really there to diagnose issues with the cat. So either the cat is faulty or there is another cause, such as a dodgy spark plug, which comes up quite a lot.
Thanks, I am not getting any eml light it just shows fault 21 when put in dealer mode so I was trying to eliminate this as a cause before going further. I will check the plugs
Ahh ok, the code might not be related to the fault then as my EML kept flashing while the error 21 was present. It disappeared as soon as I fitted the O2 bypass, so obviously a faulty sensor. I didn't even need to go in to dealer mode. I can't really offer much more help unless it does turn out to be plugs. After that I'd try a garage with the diagnostics and a rolling road.
