Fluke Posted August 21, 2014 Share Posted August 21, 2014 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. Quote Link to comment Share on other sites More sharing options...
ZMANALEX Posted August 21, 2014 Share Posted August 21, 2014 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. 1 Quote Link to comment Share on other sites More sharing options...
Fluke Posted August 21, 2014 Author Share Posted August 21, 2014 So is it the lamba sensor thats likely to be faulty? If so which one? Quote Link to comment Share on other sites More sharing options...
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