Bought a 2007 K12S about a month ago with 26k miles (30k on it now). Ran a scan on it today and got a trouble code 271A for oxygen sensor 1.
The previous owner put a Remus slip on along with some other mods. I cannot find any sign of a power commander installed in the tail section, but my understanding is a PC bypasses or replaces the sensor, which is left unplugged or removed. So, I have two questions:
1) If there is a PC on it, could it be under the tank? I've never had a PC on any of my previous bikes.
2) If it does have the power commander, does the sensor code typically show up or does that indicate a problem?
Had I not run the diagnostics, I would not have suspected anything. The bike runs great.