I just got a p1168 code and a p1051 code for my 2004 Infiniti G35 have the service engine soon light on how worried should I be

 

As Alfred E Newman always said. "What me worry"

Check out the FSM EC section

https://www.nicoclub.com/service-man...F2004%2Fec.pdf

See Page EC 462

Good luck

 

P1168 can't completely closed loop on bank 2, look for vacuum leaks, pull and inspect spark plugs, real-time scan the O2 sensor to make sure it's working properly.

P1051 is a generic code because your scanner doesn't have protocol 9141-2 needed to properly read codes for this car. Use a different scanner with the correct Nissan protocol.

 

will do

 

P1051 is Air/Fuel Ratio Sensor Heater Bank 1.

 

That's actually a generic for sensor 1 bank 2 heater.

With the proper protocol scanner it will probably come back as P0051 for low voltage signal or P0052 for high voltage signal.

However sometimes it comes back as something wildly different. Gotta use an OBD2 scanner with the correct protocol.

It's basically comparing variations of the english language, there's brooklyn english, southern english, british english, australian english, etc.

Scanner doesn't know if it's a "dickey", a "boot", or a "trunk". All three words are used to describe the rear storage compartment of an automobile depending on which variation of english you speak.