Code P0440
10-07-2008, 04:05 PM
#1
Code P0440
I have gotten the P0440 code, and my car has been running fine with it. I have gotten a new gas cap and cleared the code, but it came back like a week later. The guy at autozone said to check vacuum lines, but I don't know where I should be looking exactly in the engine bay. I was in a small head on collision like 4 months ago, no serious damage, just bent my headlight a little and ruined my bumper cover, so now my bumper sags on the front right hand side of the car. But I was hoping someone would have some input on what to do to get rid of this code? Thanks.
10-07-2008, 05:54 PM
#2
Senior Member
Join Date: May 2008
Location: Moore, OK
Posts: 1,767
Incorrect fuel tank vacuum relief valve
I
Incorrect fuel filler cap used
I
Fuel filler cap remains open or fails to close.
I
Foreign matter caught in fuel filler cap.
I
Leak is in line between intake manifold and EVAP canister
purge volume control solenoid valve.
purge volume control solenoid valve.
I
Foreign matter caught in EVAP canister vent control valve.
I
EVAP canister or fuel tank leaks
I
EVAP purge line (pipe and rubber tube) leaks
I
EVAP purge line rubber tube bent.
I
Blocked or bent rubber tube to EVAP control system pressure
sensor
sensor
I
Loose or disconnected rubber tube
I
EVAP canister vent control valve and the circuit
I
EVAP canister purge volume control solenoid valve and the
circuit
circuit
I
Absolute pressure sensor
I
Fuel tank temperature sensor
I
O-ring of EVAP canister vent control valve is missing or damaged.
DTC P0440 EVAP CONTROL SYSTEM (SMALL LEAK) (NEGATIVE PRESSURE)
On Board Diagnosis Logic
EC-362
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