Everything happens around Christmas I have about 235,000 miles on my 972.2 and my engine light has come on. I got the code read at AZ and it said bank 2 after cat o2 and I was wondering if anyone has replaced theirs with the Denso 2344601 4wire first time fit it is suppost to be easy to swap out with no wiring. Thanks

 

well if you buy the more expensive one it should be a direct swap, just wrench the old one off, unplug it, plug in the new one and bolt it in......... I think Denso is our OE part too

 

What was the code? Sometimes code can be caused by something other than O2 sensor.

The O2 sensor can be very tight. It helps to warm the car perhaps 2-3 mins before attempting to remove. This warms the O2 sensor and pipe and helps removal of sensor. A long closed end wrench slipped over the sensor and a hammer can help if it's really tight.

good luck