Evening all, when my 96 wrx import gets upto running temperature the check engine lights comes on but has no effect. Finally got round to investigating today by connecting the 2 black wres and got 2 fault codes. 22- knock sensor and 45- pressure sensor.
Now knock sensor is self explanatory but pressure sensor? oil? air? boost? any idea anyone?
Also i wanted to reset the ecu to see if one or the other codes is legacy but i only have the 2 black wires not the 2 green wires, did all early scoobs have both the green and black wires??
Thanks in advance

Spen

 

If the wires have never been used before they may be taped up still.

Picture of early MAP sensor

https://www.scoobynet.com/general-te...ap-sensor.html

 

Oh mate that has sorted me right out! There is a k and n fitted and the guy who fitted needs shooting! The sensors vacuum pipe goes no where and other plumbing was shot to bits! Time to *******ise it back right!

 

Glad to have helped,unless you're running a FMIC then there really is no need for the induction as the OE airbox is good enough.

 

Sorry, a FMIC what's one of them?

 

Also I haven't tried digging for green wires yet! Been too busy at work! But once I change map sensor will the fault code dissapear or still flash up as a legacy code? So much easier with obd!!

 

FMIC = front mounted intercooler 😄

 

Ahh, no not got one! Right changed map sensor as was over boosting and now again at running temperature I'm getting the legacy fault! Tried 2 methods of ecu reset being the unplug battery and pump brake pedal and also the attach green and black wires and do throttle position and drive for minute way! Neither worked! Any other known methods for imports?