Hi,

I have a 94' wrx and it's been playing up recently. I did the (black plug)ecu reading procedure and got code 45, Pressure Sensor.
Problem is, I haven't a clue what this is and what it does !!! Can anyone shed some light on it for me ???
Many Thanks

 

check this thread and follow the link :-

https://www.scoobynet.com/scoobynet-...a-wrx-sti.html

45 - Pressure sensor –Pressure exchange solenoid valve

 

i had codes 44 and 45 try cleaning out the boost solenoid with brake cleaner with the green plugs connected worked for me,pretty sure that code is the boost solenoid check for leaks and that the solenoid is plumbed in right

 

Thanks for that, i don't really know what to do about it !!
Not sure how to test if it's faulty or whether it's wiring etc.
Cheers

 

Ooops, you've replied to quickly for me !!

Thanks

 

ignition of connect the 2 green plugs next to the black diagnostic plugs this puts the car in test mode ignition on dont start car starts thesting components fans etc if you then go under the bonnet and on the drivers side by the suspension strut is a small cylinder, should have a hose going to the air feed at the bottom middle hose goes to the turbo and top to wastgate actuator or vice versa cant remember the corrrect way the cylinder starts clicking away now remove top hose and bottom, spray with some brake cleaner leave a few seconds ignition of remove the green plugs and try that mate search on here theres a few threads on here with pics i used to help me