I have had the check engine light come on twice now.
Any help is appreciated. Here is the full story.
At approx 1,100 miles, the check enging light came on. Took to
dealer. They told me it was code P1455 on the diagnostic computer,
meaning "vapor reducing fuel tank system malfunction". The
technician said no one at the dealer had ever seen this code appear
before. He said that the check engine light has come on for some
Prius owners when the gas cap has not been properly re-tightened
after removal (as when filling the tank).
They ran through their manual's entire troubleshooting procedure.
None of the procedural checks found a problem. Then, they "cleared"
the computer and restarted the car. The light did not stay on. So,
the immediate problem is "solved" (I guess/hope). They said that if
it happens again, they'll contact Toyota and pursue further.
Well, the same thing just happened tonight - two weeks after the first time. Each time this happened two days after filling the tank. And, yes, when I filled the tank this last time, I was absolutely sure that I seated the gas cap properly.
I have heard of other cars, Toyota and non-Toyota, having
diagnostic lights come on when the gas cap was not "properly" seated.
The technician also said that if the light comes on and you discover
that the cap was not seated, then you re-seat it properly, the light
will not go away "right away" - you need to drive it for at least 20
minutes.
Any relevant experiences from you all would be appreciated.
Any help is appreciated. Here is the full story.
At approx 1,100 miles, the check enging light came on. Took to
dealer. They told me it was code P1455 on the diagnostic computer,
meaning "vapor reducing fuel tank system malfunction". The
technician said no one at the dealer had ever seen this code appear
before. He said that the check engine light has come on for some
Prius owners when the gas cap has not been properly re-tightened
after removal (as when filling the tank).
They ran through their manual's entire troubleshooting procedure.
None of the procedural checks found a problem. Then, they "cleared"
the computer and restarted the car. The light did not stay on. So,
the immediate problem is "solved" (I guess/hope). They said that if
it happens again, they'll contact Toyota and pursue further.
Well, the same thing just happened tonight - two weeks after the first time. Each time this happened two days after filling the tank. And, yes, when I filled the tank this last time, I was absolutely sure that I seated the gas cap properly.
I have heard of other cars, Toyota and non-Toyota, having
diagnostic lights come on when the gas cap was not "properly" seated.
The technician also said that if the light comes on and you discover
that the cap was not seated, then you re-seat it properly, the light
will not go away "right away" - you need to drive it for at least 20
minutes.
Any relevant experiences from you all would be appreciated.