Greetings SUPRA Gurus,
Helping out a lady friend who has a 2011 Launch 22V ... Indmar Assault MPI 325 engine.
I am still running a 2004 tournament boat so do not have to worry about the problem she is having ...
She is receiving the following WARNING code, all related to the Catalytic Converter / HEGO sensor ...
IMG_2731.jpg
Determined the following from the Indmar Engine Manual ...
SPN 3050, FMI 11 - Catalyst Inactive on Gasoline (Bank1)
FMI 11 – Root cause unknown
OC 11 – has occurred 11x
DTC 0420: Bank 1 Cat Inactive
Best I can tell from research is ... a bad HEGO sensor OR a bad CAT, obviously the former is alot less expensive than the latter.
Planning to swap Bank1 sensor with Bank2 to see if the problem follows the sensor ... that way will know if its a sensor problem or CAT problem.
Have not looked at engine directly yet so asking a Dumb Question ... is this the CAT sensor or the POST-CAT sensor? 99% sure that is "Sensor 2 - Post Cat".
Any other ideas would be greatly appreciated!
LarryG
www.ski-it-again.com