[gT20]

I have a 2001 g20t that's been throwing two codes p1148 and p0130 recently replaced the front o2 sensor and still after a mile itll kick on what causes these code really has me stumped

 

[JDM_Ej]

Isn't p1148 for the rear o2?

 

[gT20]

P1148 NISSAN - Air Fuel Ratio Closed Loop Control Function Bank 1
is what comes up would that be the front o2 or rear??

 

[Robj80]

that is the front O2. Your car is not going into closed loop. Betting it's not running 100% and your mpgs suck.

Check the fuse for the O2 and if that checks out inspect wiring. Confirm you have the correct 02 sensors as well and of course your battery is showing more then 11v at idle.

 

[gT20]

which fuse controls the o2 sensor ive checked the ones under the dash and under the hood and they all check out with a twst light