CEL on my base model 200sx , need help

oldman · 07-09-2006, 05:05 PM

This is what my Haynes manual shows to get into diagnostic mode:

But looking at my ECU I don't see the same:

So what do I turn on the diagnostic mode on my ECU? My car is the base model 200sx - soon to be a SR20 swap candidate.

t bags · 07-09-2006, 07:40 PM

dont know much about the mighty ga16.but autozone scans them for 50

94Ga16sen · 07-09-2006, 09:47 PM

auto zone did it 4 free 4 me.....

A98SE-R · 07-09-2006, 10:25 PM

Some auto zone's do it for free. The ones around here dont. As for the location mine was on the back portion of the ecu. The side you cannot see.

spdracerUT · 07-10-2006, 12:45 AM

like A98 said, it's on the backside of the ECU.

oldman · 07-10-2006, 01:26 AM

Thanks guys. I'll try Autozone, if no go then I'll flip the ECU.

Cujo_se-r · 07-10-2006, 01:33 AM

just left up the ecu and flip it around. I see you already have the nuts off.

spdracerUT · 07-10-2006, 12:23 PM

yeah, you already have the two nuts off. Just pull it up and out.

2dr_sentra · 07-10-2006, 02:37 PM

mine had the same problem, you gotta flip it around, its facing the firewall.

Char · 07-10-2006, 02:54 PM

It is the side facing the firewall... it can be a bitch to get out at first. Its also covered by a sticker (as it may or may not say) so grab a razor to get it away from the hole. And yeah the GA16 and SR20 ECU setup on our 200s look pretty much exact. I did it to my friends SE when his CEL was coming on. O2 sensor. XD

oldman · 07-10-2006, 06:42 PM

Thanks guys, got it done. I had a code 32, bad EGR Valve. I played around with the valve, it did feel stuck. I kept pressing on the underside of the EGR valve until it was a bit smoother in operation. I made sure to delete the ECU code. Seems to be all good now.