General Category > General Discussion
2020 V85TT CEL after/during heavy rain
Grabcon:
--- Quote from: guzzisteve on September 16, 2025, 09:29:31 AM ---Plug the bike in when light is on to find out what goes on. Plug into software to tell you. It's the way it's made, or look at info on dash for codes.
--- End quote ---
The only code ever shown has been an O2 sensor code. If the senors are good than all the code tell you is that it is fueling issue.
Grabcon:
Kind of tough to cover the bike while riding in a heavy rain. Plus by then it is too late.
rocker59:
--- Quote from: Grabcon on September 16, 2025, 12:38:52 PM ---Kind of tough to cover the bike while riding in a heavy rain. Plus by then it is too late.
--- End quote ---
"Sometimes the bike has sat in the rain because we were traveling and it may have been parked for the evening, then when we start out the next day I might get the CEL after some miles"
This scenario is repeatable and you can inject the waterproof cover into the mix to help rule in, or rule out water intrusion into the fuel after sitting in the rain. That's why I suggested the idea.
Personally, I think you have a very high probability of fuel contamination.
The drain on the fuel filler well may be blocked and water is getting past a fuel cap seal. I've had to clean the drains out in years past.
You asked for help, and I'm just offering some suggestions learned from past experiences over the past 30-years. It rains a whole lot more in the Ozarks than it does in Arizona, so I've faced a few trials over the years.
Tkelly:
In your first post you say the bike has no issues now,I don’t get what you are asking.I had an idiot light on my Stelvio supposedly caused by a hard to reach bad connection under the fairing come on during strip out west in 2016.At some point it went out and never came on again.I guess it fixed itself,maybe yours did too.
Grabcon:
--- Quote from: rocker59 on September 16, 2025, 03:05:36 PM ---"Sometimes the bike has sat in the rain because we were traveling and it may have been parked for the evening, then when we start out the next day I might get the CEL after some miles"
This scenario is repeatable and you can inject the waterproof cover into the mix to help rule in, or rule out water intrusion into the fuel after sitting in the rain. That's why I suggested the idea.
Personally, I think you have a very high probability of fuel contamination.
The drain on the fuel filler well may be blocked and water is getting past a fuel cap seal. I've had to clean the drains out in years past.
You asked for help, and I'm just offering some suggestions learned from past experiences over the past 30-years. It rains a whole lot more in the Ozarks than it does in Arizona, so I've faced a few trials over the years.
--- End quote ---
Thanks for the input this is what I was thinking as well. Unfortunately the fuel filter is internal and attached to the fuel pump. I saw a write up on how to replace the fuel filter on GTM. Not difficult just a PIA to do.
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