how would you know if ecu is in safe mode?

[ilike2drive21]

how do you know if its in safe mode and what type of things could make it get in safe mode??

[blackrms13]

if the CEL is on its in the safe mode...

and i duno about how to "get" there
but there is a self-diagnostic mode

[480sx]

Originally Posted by blackrms13

if the CEL is on its in the safe mode...

and i duno about how to "get" there
but there is a self-diagnostic mode

Wrong. 97 percent of all nissan CELs will not put the ECU into safe mode. A maf CEL and a CAS CEL will put it into safe mode.

You know your in safe mode when your engine wont rev over 2500 rpms. You can unplug your CAS or your MAF and get into safe mode.

[ilike2drive21]

thank you i wanted to know cuz a guy at this shop was trying to tell me shit like my CEL's wont make my car run at full potential cuz it gets in safe mode, which i highly doubted. was in safe mode

[480sx]

Some CELs will do that though, although its not considered 'safe mode'. A CLT sensor going bad(which sometimes throws a code) will make your car run rich all the time. A Knock sensor code will pull timing and make your car have a lot less power.

[ilike2drive21]

Originally Posted by 480sx

Some CELs will do that though, although its not considered 'safe mode'. A CLT sensor going bad(which sometimes throws a code) will make your car run rich all the time. A Knock sensor code will pull timing and make your car have a lot less power.

thanks i didnt know that, my knock sensor was out and i just advanced my timing it did show it was back a few degrees. What is the CLT sensor