Ken-chan's car blog

This is an overview on code retrieval for Nissan 240sx / S14 with OBD1 ECU – KA24DE motor (1995).  This DIY along with the OBD1 ECU error codes may also work on other versions of 240sx, but you may want to verify your own information.  Please note that the error codes were sourced from 1995 Factory Service Manual for Nissan 240sx.  Having said that, let’s get going…

And here is the link to the MS Excel sheet featuring the list of Nissan 240sx OBD1 ECU codes.

http://www.makemilk.com/pic_hosting/s1495/diy/retrieving_ecu_codes/s14-1995_ecu_error_codes.xls

Some notes on retrieving codes:

-codes will follow consecutively one another followed by a long pause – for example:

you might get code 12 (if MAF signal is bad) then long pause then code 25 (IACV / IAAV) and then long pause again and they’ll keep looping so if you miss them first time around, you’ll be able to pick them out soon again.

-Code 55 (5 long flashes followed by pause and 5 short flashes) indicates that there is no error.  This will also show up when you reset the ECU codes.  Basically it means: no error code was stored.

An alternative to this is to get NISSAN consult box that hooks up to laptop shown below… please click the picture for more information…

Nissan Consult - obtaining realtime data from your car's computer

There are many ways to remove a seized stud – easiest way – get a stud extractor.  But if you don’t have one, here is a diy that will help you remove the stud without damaging it.

This is a quick and cheap way to remove pilot bushing from the shaft without purchasing “special tools”.

Take a decent size bolt and 5/8″ hose, put the bolt in 1/3rd of the way into the house – you may have to turn it a bit by hand to get it in to the hose…

Now put in inside the pilot bushing hole.. ensure the hose sits right up against the end of the pilot bushing hole. Now all you have to do is either push in the bolt further into the hose or turn the bolt clockwise so it goes further into the hose causing the hose to expand inside the pilot bushing.. since the hose will fit snug inside the pilot bushing, u can pull out easily..

A quick note:

Keep it straight when pulling it out – to avoid scratching and also – the tolerances for the bushing size are precise so unless you keep it straight – it might get stuck. If it gets stuck.. just rock it gently back in and try again.

Oh yeah – when you’re putting on a new clutch kit.. don’t reuse the old bushing..

Ok guys – I run into this before with a friend who’s plug broke off wires near the nissan 240sx MAF plug and he needed something to work for him for few days.  Yeah it’s got scent of ghetto but it works..  It probably will work with other ones as well – it sits tight as well.  It’s your standard power supply plug for EIDE devices.. cut off the plug with some length of wires and then just solder or splice.
Just make sure to tape off the back of it so it’s bit more moisture proof.

 http://www.makemilk.com/pic_hosting/s1495/diy/temp_broken_maf_plug/broken_maf_plug_tmpsol.jpg

http://www.makemilk.com/pic_hosting/s1495/diy/stripped_screw_removal/stripped_screw_removal.jpg