niner

13:Pressure Sensor
17:Feedback System

does anyone know what would cause these two codes to appear?
the engine light comes on below 3k RPMs at >50% throttle.
im guessing they appear together b/c they just showed up the other day and.
car runs fine. idles terrible when enigne is cold and the weather is cold. bounces b/t 1500 and 1600 RPMs-may be unrelated to codes though.
ive got a new O2 sensor sitting in garage-would that make the feedback system code dissapear if i put it in?

thanks for any help ahead of time

Scott 89t2

17 is O2 sensor code. with car running check the voltage of the 02 (while it is still pluged into the harness). if it's 0 or under .1 the harness wire is probably grounding somewhere. if it's something else get a new O2 sensor.

is the vac line on your pressure sensor?

niner

yes, vac line is on sensor

and i believe that 16 is O2 sensor and 17 is Feedback Sytem, but you are right, they are basically related

Scott 89t2

ya code 15 means the oxygen sensor output remains below 0.55v 80 sec. after F/B system operation beginning

and code 16 means the oxygen sensor output remains 0.55v 10 sec. after F/B system operation beginning

http://www.1300cc.com/howto/how2/codes.html