Haven’t had much luck but I Just had a thought- I think it’s the battery I changed it recently . It’s an optima blue top. Is this a possibility

Great thankyou ill work through and let you know how I go !

Anything but simple I have the same problem ! Ive changed the sensor on Bank 1 and swapped it around a few times ,Still I keep getting the restricted power thing, Incidentally this clears itself after awhile if I leave the car!. Ive pumped smoke down the ports and still cannot see any leak! The...