[Pinoy.340i]

Hi,
I have a 2016 BMW 340i with around 63k miles and recently tuned to stage 2 with Bootmod3. The three engine codes, 191C02, CBD309, and 21A02D have appeared when I scanned with Bootmod3 and I’m unsure what is causing the check engine. The car seems to run a little underpowered however no rough idle. Please help I’m confused on what is wrong!

[WrxToBeamerGuy]

Originally Posted by Pinoy.340i

Hi,
I have a 2016 BMW 340i with around 63k miles and recently tuned to stage 2 with Bootmod3. The three engine codes, 191C02, CBD309, and 21A02D have appeared when I scanned with Bootmod3 and I’m unsure what is causing the check engine. The car seems to run a little underpowered however no rough idle. Please help I’m confused on what is wrong!

Climate one is normal after flashing BM3. The tank vent one there is a hose on the intake manifold that commonly fails and you probably need to replace it. Fuel Breather Valve, it may then clear the other code as well.

https://www.fcpeuro.com/products/fue...SABEgKTN_D_BwE

[Aldor27]

The 21A02D is software “glitch” that can only be fixed via an ISTA update. I got mine done for $500-600 at a dealer. They locked my DME afterwards.

https://static.nhtsa.gov/odi/tsbs/20...38380-9999.pdf