I own an 1998 Acura Integra LS 1.8 Automatic.
I've been having this problem since I bought the car which was around last year. I've replaced a few parts, but not the canister yet. What could be the problem besides the canister?

I recently replaced the canister vent shut part which was around $150.

 

any help? my MPG dropped badly lately..
I used to get 28-32 MPG combined (city/hwy) but now I'm getting 20-22 MPG combined..

 

i googled P1457 and it seems like the two way valve is a common culprit.

http://www.acuraworld.com/forums/f47...e-p1457-65092/

read this one just for a laugh http://hondaswap.com/general-tech-ma...57-code-39352/

 

what is the two way valve? any pictures of it?
I already replaced the vent shut part..

 

check the part that connects to the hoses in the canister. Mine was leaking from there because of the acid in the battery leaked down and caused a hole. It was the same exact code you got. I replaced the canister and no more CEL. GL

 

PM me your email address and i will send you some stuff.

 

P1457 Evaporative Emissions (EVAP) Control System Leakage (EVAP Canister System)

Looks like you'll have to replace the canister since you already replaced the canister vent shut.

 

I went to take it to a mechanic.. I think he pumped air through the gas line or whatever.. and the P1457 code is gone.. but now.. I got the P0450 and P0452 code..

 

Weird...there's no P0450 code listed in the ECU Code FAQ?

ECU and ABS CODES

 

I had the P1457 issue and I finally fixed it. Just read my thread over at Team-Integra.net

Here is the link to my thread
http://www.team-integra.net/forum/di...1&ThreadPage=1

 

whats the part number for the charcol cannister and the other items??

 

It shows up on my OBD II Scanner. P0450 and P0452

i have no clue

 

bump, anymore clues? I really want to get it fix.. sipping my gas like crazy

 

try the method of pulling codes descibed in the link posted...

maybe that will help u clear up the descrepency in the code not being listed

 

Well, isn't the P0450 just a general code though?
P0450 Evaporative Emission Control System Pressure Sensor Malfunction
P0452 Evaporative Emission Control System Pressure Sensor Low Input

 

any idea on the P0450 and P0452?