Engine cranks but will not start after interior got wet, codes P1551 and p15fe

Hi,

Does the engine starter engage and the engine not start, or doesn't anything happen when you try to start it? Is there anything in the instrument panel that got wet?

The codes have me a bit confused. the P15FE indicates External Engine Off Timer No Signal which shouldn't cause a no-start condition. The P1551 is a Fuel Composition Sensor Circuit Malfunction. This could cause a no-start.

What I suggest is this: There are a couple of fuses I need you to check to make sure they are good. In addition to checking the fuse, make sure there is power to and from them. Here is a link that explains how to do it:

https://www.2carpros.com/articles/how-to-check-a-car-fuse

Below, I attached the entire wiring schematic for the powertrain management. I had to cut the pics in half to make them readable, but I did overlap them so you can easily follow from one to the next.

In the first pic, I highlighted two fuses. One is in the vehicle (fuel pump) which I circled and the other is under the hood related to the engine off timer, which again isn't making sense considering what was done.

Also, since you pulled the carpet to dry it, make sure nothing was knocked loose at the interior fuse box. The last two pics show the fuse boxes locations. I can't be certain, but I suspect the problem is in the interior passenger side fuse box.

Let me know what you find or if you have other questions.

Take care,

Joe

See pics below.

You are very welcome. Pay close attention to the fuse box. I don't know how the water got in, but make sure nothing got to the fuse box as well.

Take care and I look forward to hearing what you find.

Joe