loose gas cap code showing up again and check engine light
#12
As I've mentioned, I would get the service manual and get a good layout of that closed system, then you'll need to check the hoses and connections from point to point - it may be easier to change all the hoses if you can get to them (new hoses need to be compatible in that environment (gasoline fumes will eat through most hoses). I would also get a cap that fit tight - try the cap first and see if you need to go further.
#13
As I've mentioned, I would get the service manual and get a good layout of that closed system, then you'll need to check the hoses and connections from point to point - it may be easier to change all the hoses if you can get to them (new hoses need to be compatible in that environment (gasoline fumes will eat through most hoses). I would also get a cap that fit tight - try the cap first and see if you need to go further.
#15
#17
#18
#19
Did replacing your gas cap resolve this permanently or was there another repair? I have the same three CEL codes and the odometer says 9ASCAP and beeps when I start the truck.
I already replaced my gas cap with an OEM one from the dealership. I've reset the computer several times and these codes always come back. Anyone have any other suggestions?
P0457
P0456
P0440
I already replaced my gas cap with an OEM one from the dealership. I've reset the computer several times and these codes always come back. Anyone have any other suggestions?
P0457
P0456
P0440
Last edited by dingdong2; 10-01-2014 at 11:34 AM.
#20
Did replacing your gas cap resolve this permanently or was there another repair? I have the same three CEL codes and the odometer says GASCAP and beeps when I start the truck.
I already replaced my gas cap with an OEM one from the dealership. I've reset the computer several times and these codes always come back. Anyone have any other suggestions?
P0457
P0456
P0440
I already replaced my gas cap with an OEM one from the dealership. I've reset the computer several times and these codes always come back. Anyone have any other suggestions?
P0457
P0456
P0440
Per Service Manual, check the following:
- Hoses disconnected or left off
- Holes or cracks
- Loose seal points
- Evidence of damaged components
- Incorrect routing of hoses and tubes
- Fuel Cap left off or bad gasket seal
Hopefully this will provide some help.