SES code P1273 dealer may be screwing me - Nissan Murano Forum
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#1 Old 03-21-2009, 12:51 PM
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SES code P1273 dealer may be screwing me

about a month ago I brought my 2004 Mo into the dealer. it has 65000 miles and for some unknown reason the exhaust manafold cracked.

they replaced the manafold and had to charge me for a new O2 sensor because they couldn't remove the old one. I also had a oil cooler seal replaced...grand total $1200.00

less than one month later the SES light come on. I have the code read at autozone and it reads P1273 : Air fuel ratio (A/F) sensor 1 (Bank 1) lean shift monitoring

I go back to Nissan and without reading the code...because they wanted to charge me $100.00 for the diagnostics. they tell me that if the code was read correctly by autozone that it had nothing to do with the previous repair and the parts and labor to fix the A/F sensor would be $800.00.

I've talked to a mechanic who tells me that the A/F sensor 1 is located on the exhaust manafold and it could have been damaged by nissan at the last repair

what do you all think, I know I will have to go to another dealer but anyone know about this sensor? where it is and so fourth???
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#2 Old 03-21-2009, 08:39 PM
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Danny-

Bank 1 is the rear set of cylinders. Which exhaust manifold did your dealer replace?

I have attached an assembly diagram of the manifold, A/F sensor, and O2 sensor for bank 1. As you can see, the O2 sensor (#7) is not attached to the exhaust manifold as the dealer claimed. It is attached to the outlet end of the pre-cat (#5). The A/F sensor (#1) is the only sensor attached to the exhaust manifold.

Unless the dealer replaced your pre-cat there was no reason for him to remove the O2 sensor. However, if he replaced the rear exhaust manifold (bank 1) then he had to remove/replace the A/F sensor.

Now if it turns out the dealer replaced the front (bank 2) exhaust manifold then the failure of the rear A/F sensor is most certainly unrelated to their repair activities.

-njjoe
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#3 Old 03-23-2009, 11:23 AM
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thanks Joe, that was more help than I got from talking to everyone else.

I called the dealer today, they did replace the rear bank. I told him what you said and he keeps telling me the the A/f sensor is not on the manafold, and he said they did replace (I think he said) the ASM I told him I don't know what that is, I thought you replaced the O2 sensor and he said yea that is the o2 sensor. when I told him the o2 sensor is on the pre cat he said no it's on the manafold.

maybe this guy is just confusing what sensor is where and I'm going to bring it back to him.

at least now I'm armed with a little more information, thanks to Joe
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#4 Old 03-23-2009, 01:12 PM
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Danny-

Here is the complete excerpt from the Nissan Service Manual that shows the legend for the part callouts. I suggest printing it out and referencing it when you next talk to the dealership.

-njjoe
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-Upgraded (non-Bose) speakers - Pioneer TS-A1702C & TS-G1643R
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#5 Old 03-23-2009, 01:28 PM
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Danny-

Here's another diagram from the Nissan Service Manual that show the locations of the A/F sensors and the heated oxygen sensors(HO2S2).

Since they replaced the rear (bank 1) exhaust manifold it is obvious that they had to remove the rear A/F sensor in order to reuse it. However, if it was impossible to remove (which is likely) and needed to be replaced then it should be covered by Nissan's parts warranty, which is for 12-months or 12,000-miles.

-njjoe
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-OEM HID conversion & HID fogs
-OEM iPod interface
-Upgraded (non-Bose) speakers - Pioneer TS-A1702C & TS-G1643R
-Muth signal mirrors
-Valley Industries hitch and wiring harness
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#6 Old 03-23-2009, 02:47 PM
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Man Njjoe...you hit the ball out of the park on this one.

Good job!

After 142K miles, my MO is history. Now sporting a loaded silver 2012 Ford Edge Limited with 20" wheels.
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#7 Old 03-23-2009, 05:51 PM
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Joe, I lived in Woodbridge and Freehold and spent most of my time at the beach in Belmar and sea side

So the next time I go to Jersey I'm buying you a beer.

I have already printed out the first diagram to bring with me to the dealer but the other 2 are great.

they did try to remove a sensor from the manafold (he told me it was the o2 sensor) and asked if they could lube it and let it set overnight and try to get it out the next day. which forced me to pay for another day of rental car fees. the next day they said they couldn't get it out and charged me a hundred and something bucks for a new one.

funny thing is that the SES light went off yesterday or the day before and hasn't come back on. dunno
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#8 Old 03-23-2009, 06:40 PM
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DannyC188-

That's what this forum is all about - helping other members. Plus, it ticks me off when dealers and their service advisors BS their customers and assume they (we) are all idiots.

Assuming the service manual diagrams are correct then it is obvious that your dealer replaced the Air/Fuel sensor in the rear exhaust manifold. That means the sensor is covered by the 12-month/12,000-mile warranty. If the SES light comes on again it will be covered. However, I would still want them to acknowledge it was the A/F sensor they replaced so you do not have warranty claim issues down the road.

By the way, I live about two miles east of Seaside on the Barnegat Bay, and am known to enjoy a cold Schaefer every now and then.

-njjoe

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-OEM iPod interface
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-Aluminum fuel tank shields
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#9 Old 04-03-2009, 04:28 PM
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Thanks Danny and njjoe for this thread, was about to start another P1273 thread. Just had my 04 diagnosed with same problem. A brief history: drove 8 hours in 40degrees C heat . Stopped to refuel after 3hrs and SES light came on afterwards. Suspected poorly closed fuel lid. Stopped and properly fixed fuel lid. SES still on. Continued driving and a few kilometers to destination, car started jerking when an attempt is made to press down on the throttle. Successfully got to destination and car left to cool. 3hrs later - started car and SES light gone and no jerking. Stayed that way from MOnday 30th Mar to today 3rd April. Commenced return journey back to base and SES light came on after 5hr of driving in 30-40degrees heat with AC on. Got home successfully with no jerking and Mo diagnosed with P1273. So whats d recommeded course? Check for exhaust manifold crack- due to very bad roads travelled with lots of bumps and deep holes OR look to replace A/F sensor OR Do nothing and hope SES will go off again. Any other help will be highly appreciated. What really is the failure of not having an A/F sensor?
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#10 Old 04-04-2009, 05:06 PM
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When I went to the dealer my car was running fine but the SES light was on. I had the code read and then went to the dealer. the service manager asked if the car was running any different, and I said no. he gave me and est of $700 to $800 to replace the a/f sensor. the part alone was $550 he said.

at the time we were only a few days away from having a baby and I didn't want to spend that much so I asked if I could let it go for a bit. He said that over time the car would start to run rough, starve for fuel and have hard starts, then it would be time to replace it.

several days later, when my wife started the car it ran really rough for a few minutes then ran fine. the SES light went off shortly afterwards and never came back on.

with the birth of our daughter and not having any time to get back to the dealer I have left things as is. BUT if the SES light comes back on I'm runing to the dealer with all of Joe's info so they can't try to screw me

I think if you had a cracked manifold you would know, mine was real loud....sounded like an open exhaust
hope this helps
Danny
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#11 Old 04-04-2009, 05:22 PM
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I wonder what the difference between the air/fuel sensor and an O2 sensor is, since they seem to be doing the same thing.

On my O3 FSM, it just lists it as two oxygen sensors per bank. So the AF sensor is just an O2 sensor, which is not $500! The part is between $100-200 depending where you buy it from.

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#12 Old 04-04-2009, 05:36 PM
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you know, I don't think the service manager that I talked to had a clue as to what he was saying or what part I really needed and how much it cost.

the more knowledgable people I talk to the more the service manager sounds like an idiot.
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#13 Old 02-22-2011, 12:24 AM
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I had the same problem P1273, bank one sensor one. I perchased the sensor at autozone for $80 some. I had to remove the intake to remove the sensor. The intake manifold has a couple of items mounted in the rear which are hard to get to. I should have taken pictures, sorry.
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