P0440
August-6th-2003 | 03:41 PM
#1
Thread Starter
Protege Newbie
Joined: Jul 2003
Posts: 3
P0440
Hello all,
I've been repeatedly getting a check engine light with a code P0440. When I take it in, the mechanics keep telling me that it's because the gas cap is loose. I got the cap from the dealer, so I know it's designed for my '96 protege. And I also know that I am putting the cap on tightly. It clicks at least 5 times.
Could this code be something more serious? My gas mileage has been great, getting over 32 mpg with heavy highway driving. It's been a while since I've done mostly city driving, but my OBD software estimates it at about 24 mpg. The car is running just a good as ever. It has 60,000 miles on it.
thx
I've been repeatedly getting a check engine light with a code P0440. When I take it in, the mechanics keep telling me that it's because the gas cap is loose. I got the cap from the dealer, so I know it's designed for my '96 protege. And I also know that I am putting the cap on tightly. It clicks at least 5 times.
Could this code be something more serious? My gas mileage has been great, getting over 32 mpg with heavy highway driving. It's been a while since I've done mostly city driving, but my OBD software estimates it at about 24 mpg. The car is running just a good as ever. It has 60,000 miles on it.
thx
August-6th-2003 | 07:48 PM
#2
Registered User
Joined: May 2002
Posts: 167
From: Mt. Pearl NF
The code your getting is for the EVAP system and should have no effect on the drivability of the car. Most problems I see from evap are useually caused by loose fuel cap or broken O-ring ,dirt on sealing surface for fuel cap , CDCV stuck (valve in driver rear wheel well in filler neck - it should make a click when you turn the ignition on) or evap control valve stuck ( rear of fuel tank - rust clogs the exhaust filter in the valve).
