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motolz posted a topic in 996 Series (Carrera, Carrera 4, Carrera 4S, Targa)P1121 P0160 P1117 1999 996 I don't think there is an easy answer to this but I figure I would try before admitting defeat and taking my girl into the doctor. I recently had my CEL come on and it was throwing an MAF code along with a P0160. Since I sprayed out my MAF about a year ago, I decided to replace it, and got the above codes. I replaced my bank 2 post cat sensor, which was on the topside of the exhaust on the drivers side (pipes cross in the back)...let me tell you it was tough to get out, even with an 02 tool. But I got it and replaced it with a a Bosch O2 sensor, same number and all. Cleard the codes and still I get the same. Also, I can nearly watch my fuel gague moving, I burned about 1/3 tank on a 40 mile trip... (I know we can all do that when we try, but this time I wasn't trying, I was driving sensible!!) From all of the reading I have done, this seems to be an electrical issue. I am not very well versed in ohms, volts and amps I am afraid. Am I at the end of my DIY path on this one? Any suggestions...is it possible the new 02 sensor is bad? It was bought from Pelican. Thanks in advance for all of the help! T