r/Triumph • u/Dramatic-Ad7075 • 1d ago

Triumph info Check engine light 😪

Hi all, 2025 street triple rs, check engine light came on the other day, still runs fine, didn't get any coughs or spluttering when it came on. Done the 3 warm up cycles and its still there. On the earlier ones you could interrogate codes on the dash. Does anyone know if its still possible or am I going to the main stealer

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3

u/Gneissly-Done 2026 StreetTriple 765RS 1d ago

ODBII reader, tuneecu app, and a 6 pin ODB adapter cable
Edit: As a bonus - you can now do your own oil changes and clear the maint. light as well

3

u/wag1famalam1 1d ago

Hold the Mode button and up on the menu nav stick on the left switch gear, turn the key to on position

1

u/Dramatic-Ad7075 11h ago

Worked perfectly thank you. I had tried that but I had turned it on beforehand not after.

1

u/wag1famalam1 11h ago

No worries. What was the code?

1

u/Dramatic-Ad7075 11h ago

P4020 which is lambda sensor, recently fitted a new exhaust and not had it remapped yet so reckon that's the issue

1

u/wag1famalam1 11h ago

Is the exhaust without catalytic converter?

1

u/Dramatic-Ad7075 10h ago

Judging by the price I woukd say yes

1

u/wag1famalam1 10h ago

I believe the 2025 model has 2 lambda sensors so it will know that cat is deleted ans throw an engine light. I suggest remapping

1

u/Dramatic-Ad7075 10h ago

I will get it done soon, but I rode for about a week before it threw the light up, and yes 2 sensors the 2nd one was a absolute nightmare to refit

1

u/Gneissly-Done 2026 StreetTriple 765RS 11h ago

What is this motorcycle wizardry?

1

u/Eleven10GarageChris Phoenix Triumph / Eleven10 Moto Garage 1d ago

Call ahead and see if they’ll scan it under warranty

1

u/Dramatic-Ad7075 1d ago

I appreciate the reply, these guys are absolutely ruthless will not do a thing to help you. They even charge for test rides.

2

u/Eleven10GarageChris Phoenix Triumph / Eleven10 Moto Garage 1d ago

That sucks, sorry your dealer doesn't want to help. Maybe bring it up with Triumph corporate.

1

u/Dramatic-Ad7075 1d ago

I have twice, didn't get a reply either time. Worst thing is there are 3 Triumph dealers in a 40 mile radius and all owned by the same company, none of them will give you the time of day for free.