I recently installed a Stillen true dual with their High flow cats. Shortly after, my check engine light went on. The code was P1283. The dealership replaced the O2 sensor that was throwing the code. Again, the same code went off. I checked and tightened the entire intake which is to include, MREV2, 5/16" spacer, and the K&N intake. I called Stillen and they can't seem to come up with a solution. Anyone have an ideas on what the problem is and how I can possibly fix it? I was thinking about getting a tune, but I was informed that it may not solve the problem. Please let me know. Thank you.

 

That code isn't even in my service manual. What year and type is your G?

 

It's an '05 coupe.

 

Like I said, that one isn't in my manual - probably because the 03 doesn't have wideband O2 sensors. Here is what Nissan says...

Nissan OBD-II Trouble Code P1283

DTC: P1283
Search Bulletins/Recalls for P1283

Trouble diagnosis name: Air fuel ratio (A/F) sensor 1 (Bank 2) lean shift monitoring

Component Description

The A/F sensor is a planar dual-cell limit current sensor. The sensor element of the A/F sensor is the combination of a Nernst concentration cell (sensor cell) with an oxygen-pump cell, which transports ions. It has a heater in the element.

The sensor is capable of precise measurement λ= 1, but also in the lean and rich range. Together with its control electronics, the sensor outputs a clear, continuous signal throughout a wide λ range (0.7 < λ < air).

The exhaust gas components diffuse through the diffusion gap at the electrode of the oxygen pump and Nernst concentration cell, where they are brought to thermodynamic balance.

An electronic circuit controls the pump current through the oxygen-pump cell so that the composition of the exhaust gas in the diffusion gap remains constant at λ = 1. Therefore, the A/F sensor is able to indicate air/fuel ratio by this pumping of current. In addition, a heater is integrated in the sensor to ensure the required operating temperature of 700 - 800°C (1,292 - 1,472°F).

DTC detecting condition:

The output voltage computed by ECM from the A/F sensor 1 (Bank 2) signal is shifted to the lean side for a specified period.

Possible cause:
Air fuel ratio (A/F) sensor 1
Air fuel ratio (A/F) sensor 1 heater
Fuel pressure
Fuel injector
Intake air leaks

 

Good info slider

 

i had that same problem for months, the dealer couldnt figure anything out and charged me up the a$$... after a few different tries, what seemed to fix it was the post-cat o2. been a few months, no CEL **knocks on wood..**