drose

A few weeks ago I got the service engine light and pulled the code being P1283. It just so happened that I was getting the oil changed the next day and while the car was hoisted, it was noticed my flex pipes were done for and leaking.
I had the flex pipes replaced and within 10 kms the service engine light went out. The light stayed out for about 2 weeks and has come back on this week.
When the light comes on, I can clear it with my diagnostic tool, and then I could drive the car all day without the light coming back on as long as I didn't shut off the car. If I shut off the car, within a few miles after starting it again, the car will throw the P1283 code.
I took it to a different muffler shop to see if maybe there was another leak ( didn't want to take it to the place where I got the flex pipes as they may try to deny they screwed up the job ). I'm told there are no leaks, so now I am left to wonder what the next step is diagnosing this is.
It does mention air/fuel in the diagnostic tool, so I'm assuming O2 sensor, but which one?

Anyone ever have this code and found a fix?

Costee

Here's a TSB on the code:

MUST CLEAR SELF-LEARNING AFTER REPAIRING DTC P1273/P1283 OR P1274/P1284 AIR FUEL LEAN OR RICH SHIFT
APPLIED VEHICLES: All Nissan’s with DTC’s P1273 / P1274 / P1283 / P1284
IF YOU CONFIRM:
A MIL “ON” with any of the following DTC(s) stored:
• P1273 / P1283 (A/F Sensor Bank-1 / 2 —Lean Monitor)
• P1274 / P1284 (A/F Sensor Bank-1 / 2 —Rich Monitor)
ACTIONS:
1. Repair the vehicle as necessary.
• Refer to ASIST for diagnostic and repair information.
2. Clear the engine ECU Self-Learning.
IMPORTANT: If Self-Learning Is Not Cleared:
• The DTC may be stored again; even if no malfunction exists.
• This could result in the customer returning with the same incident (“come-back” repair).

Perhaps all you need is to "Clear the engine ECU Self-Learning."

drose

Thank you for the info Costee. Any idea how one goes about doing this? Is it just a matter of unhooking the battery for a time period, or is this something the dealer has to do for you?

Costee

The service manual suggests the dealer, with the Nissan scan tool called Consult II.

smokin5s

is there a way to do this without going to the dealer?