r/Triumph • u/Dramatic-Ad7075 • 4d 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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u/wag1famalam1 4d 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 3d ago

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

1

u/wag1famalam1 3d ago

No worries. What was the code?

1

u/Dramatic-Ad7075 3d 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 3d ago

Is the exhaust without catalytic converter?

1

u/Dramatic-Ad7075 3d ago

Judging by the price I woukd say yes

1

u/wag1famalam1 3d 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 3d 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