Error code 1273?

[Fluke]

I have had my 2003 350z throw up a P1273 code (Air/Fuel Ratio Sensor 1) twice in the past couple of weeks. The car drives fine and I can reset the code, but can any one tell me what I need to do or fix to stop the error code from being reported?

 

BTW - I have Berks HFCs, plenum spacer, a cold air induction kit and my car has been uprev'd several months ago.

[ZMANALEX]

Probably just a faulty sensor.

 

P1273 usually signifies a lean shift.

 

Sensors are in stock if required.

 

Drop me a PM if I can help further.

 

Alex.

[Fluke]

So is it the lamba sensor thats likely to be faulty? If so which one?