I have the module for almost 3 years and use the setting 100 octane. I decided to increase my octane from 93 to 100 and the performance was amazing. I ran a tank and started on the second and my engine light came on with a U019D error.

Should I reinstall the module or switch it to the lower setting or remove the module?

Thanks

 

Silly question. You dont happen to be using leaded 100 octane?

 

Good Question. No it is VP Unleaded Octane booster.

 

Maybe this thread can be of help. The “U” code throws me off.

https://www.northamericanmotoring.co...ml#post4305844