Well fellow 6th Gen'ers

My check engine light is on once again. I take it to Autozone and this time it's throwing an error code P1275. The only problem is, Autozone doesn't have any information on this code.

Does anyone have any info on this code and what could be causing the problem?

Could it be header related again?

 

It probably has to do with your A/F Sensor 1 Bank 1. I can't see a specific code for 1275, but it runs in line with A/F codes for sensor 1 bank 1.

 

I'm assuming the A/F sensor is the same as the O2 sensor? Would sensor 1 bank 1 be the one in the front left?

 

I found this weblink for codes:
http://www.brockwayengineering.com/codes.html
I think P1275 is the accelerator sensor.

 

That link has nothing to do with are cars. I looked up the codes in the service manual. While There is no 1275 code, 1271-1279 are for the A/F sensor Bank 1. This is different than the O2 sensor. In a stock car the A/F sensors are in the upper manifold and the O2 sensors are just after the catalyst.

 

Ohhhhh ok! That makes sense. With aftermarket headers the A/F sensor is visible from the engine bay. And the O2 sensors are extended to behind the cat on the y-pipe.

Learn somethin' everyday.

 

Courtesy Nissan wants $98 to diagnose the problem. Since Autozone didn't have a clue what the error code meant I might have to.

Damn.

 

I don't know which scanner they let you borrow. But last time they let me use the one they had on-sale for $99 which will read and translate the code right on the screen.
I got the 1273 code for A/F Meter bank1. The dealer replaced my catalyst converter. There is a TSB for it (I got the exaust rattle fixed right before that). Look at the thread for the exaust rattle. I think this should be cover by the emission warranty which is longer than even the powertrain.

 

My code is P1275 and I also have headers. No warranty coverage there. Any idea how is cost to replace the A/F meter?

 

I would do it yourself. Shouldn't be to hard.

 

Not sure if that's the problem. We'll see. I'm at the dealership now.

 

Nissan determined that the error code is P1273, the A/F sensor is having a problem. I might pull it and retighten or replace it.

 

Good luck getting rid of the CEL, that is one of the codes that the 05 Altima's get after HS headers install, P1273 lean sensor1 bank1 the other code is P1284 rich sensor1 bank2, as of now we have no solution.

http://www.nissanclub.com/forums/eng...-please-5.html

 

Sensor 1 bank 1 is located near the firewall, bank 2 near the radiator. Sensors after the cat are sensor 2 bank 1 and bank 2.

 

Good information! I love it.

Nissan cleared the codes. No check engine light for about 5 hours.

That's bad news that the sensor is near the firewall though.

 

Are you sure? I have the service manual also. I looked at the diagram and I really couldn't tell.

 

Cross your fingers that it won't come back. Do they order anything to fix it ? They just can't call it a fluke and do nothing. My 1273 came back twice: after I reset it @autozone (assuming a fluke) -2 weeks- and then after the dealer reset it while the CAT is on order (few days).
They replaced the CAT (per TSB) and not the sensors. The car has been fine. If you're looking at the sensor, it maynot be the fix.

 

I only have 1 cat, on the y-pipe. I have headers.

I have to work on my sig soon.

 

Well, my check engine light came on again. This time I followed the reset procedures found in the service manual.

At this point, I'm not sure if the problem is affecting performance, I don't notice much.