Ryley, I own two 3.2's (Same Engine as your XC90) - 2010 S80 - 2008 LR2 Based on what I've read the Catalyst efficiency can be affected by the temperature of the engine. The root cause of this in a 3.2 is likely a broken Thermostat Based on my two 3.2's and feedback from other's the Thermostat seem...

Hello everyone! i am a new member, thank you for the add i have been reading these forums ALOT and have been SUPER helpful, i really appreciate all the help everyone put in here :D so i drive an 09 xc90 3.2, and for the past couple months ive had a cat efficiency code for bank 1, and i have just ign...