[wild willy]

Yep, and resetting 'ghost codes' is much much faster.

Lolo I agree....

 

[wild willy]

795 miles

 

[amc49]

If you have the full TSB then look at it close for material and time charges that are sent to NISSAN, meaning CORPORATE pays for the fix, not the driver. If they charge you there they are getting a double payment. The language there will clearly use the words 'warranty claim'.

 

[wild willy]

If you have the full TSB then look at it close for material and time charges that are sent to NISSAN, meaning CORPORATE pays for the fix, not the driver. If they charge you there they are getting a double payment. The language there will clearly use the words 'warranty claim'.

If I get out away from our local dealer I will pursue. I have already been to our dealer with full tsb in hand and pretty much got the run around. I am pretty sure it is the TSB and just needs a reprogram.....but, they told me that they would charge me to find out if that were the case. With all of the reading I have done and the reprogram "not sticking" in many cases...I decided to stay away from my dealer. They are pretty bad....crooks to be exact. I have seen them totally take advantage of 75 Y/O woman that did not know any better and had no money. They will get none of mine

 

[Nicole Stanley]

Not to hijack the conversation, but my mom's 2012 Altima S had its check engine light come on and she took it to a highly referred local mechanic to see what code(s) it was throwing. Came back with the P0101 code, so he cleaned the MAF sensor. Light immediately came back on within a few miles. He said to get a new MAF sensor, so she did and he replaced it. Light came right back on, so he said maybe it was the air filter (it did need replacing). Got the air filter and the light popped right back on. I told her to take it back and have him check the vacuum hoses and wiring per an article I saw on Google. He did so, said all was well and that he didn't know how to reprogram so the code stays off. I told her she needs to have a Nissan dealer check it out because even though the guy swears the "Check Engine Soon" light doesn't mean anything at this point with a new MAF sensor and air filter, an actual problem may arise and she'll just think it's nothing until it's too late. I can say that the car has been having a serious idling issue while the AC is on (very rough idle when stopped for more than a few seconds, RPM's slipping like it's going to cut off, rebounding, but still running rough to the point that she has to either turn the AC off or put it in park and even then it still runs harder than it should), but with the new sensor and air filter it runs slightly better (goes longer periods between rough idling). Just wish she could get that light to go off for good because it's annoying.

 

[d0ugmac1]

At this point, you either have intake air leaks or faulty wiring. The former is a messy but easy job...you basically want to check all the plastic piping from the air cleaner box into the engine intake for cracks, holes, loose clamps etc. If you don't find anything...you need to take it someone familiar with OBDII scanner based debugging...and they will likely want to backprobe the MAF wires at the ECU to see if the signal there is in a valid range or not.

 

[wild willy]

I am a stones throw away for the 3000 mile mark and have been light free. Probably just jinxed myself...

 

[AnAltimaOwner]

Not to hijack the conversation, but my mom's 2012 Altima S had its check engine light come on and she took it to a highly referred local mechanic to see what code(s) it was throwing. Came back with the P0101 code, so he cleaned the MAF sensor. Light immediately came back on within a few miles. He said to get a new MAF sensor, so she did and he replaced it. Light came right back on, so he said maybe it was the air filter (it did need replacing). Got the air filter and the light popped right back on. I told her to take it back and have him check the vacuum hoses and wiring per an article I saw on Google. He did so, said all was well and that he didn't know how to reprogram so the code stays off. I told her she needs to have a Nissan dealer check it out because even though the guy swears the "Check Engine Soon" light doesn't mean anything at this point with a new MAF sensor and air filter, an actual problem may arise and she'll just think it's nothing until it's too late. I can say that the car has been having a serious idling issue while the AC is on (very rough idle when stopped for more than a few seconds, RPM's slipping like it's going to cut off, rebounding, but still running rough to the point that she has to either turn the AC off or put it in park and even then it still runs harder than it should), but with the new sensor and air filter it runs slightly better (goes longer periods between rough idling). Just wish she could get that light to go off for good because it's annoying.

This is exactly what i have going on. The only other advice I have seen is to clean the throttle body as shown here:

I am a stones throw away for the 3000 mile mark and have been light free. Probably just jinxed myself...

I really appreciate this discussion thread and your documentation on this issue. Any updates?

 

[wild willy]

Continues to come on Randomly. I quit keeping track. Seems to be more frequent with Winter Blend Gasoline. Runs and drives great.

 

[jcg0324]

Continues to come on Randomly. I quit keeping track. Seems to be more frequent with Winter Blend Gasoline. Runs and drives great.

My 2011 2.5s did the same thing. After trying different fixes to no avail I took it to the dealer in Philadelphia with the TSB in hand. They wanted to charge me for a diagnosis with no guarantee that will fix anything. I told them no thanks. Then I took it to a different dealer in New Jersey. This dealership is owned by Roger Penske. They looked at my VIN number and said they could reprogram the ECU according to the TSB and fix it. There was no charge for the service and the problem is gone. Not all dealerships are the same.

 

[wild willy]

My 2011 2.5s did the same thing. After trying different fixes to no avail I took it to the dealer in Philadelphia with the TSB in hand. They wanted to charge me for a diagnosis with no guarantee that will fix anything. I told them no thanks. Then I took it to a different dealer in New Jersey. This dealership is owned by Roger Penske. They looked at my VIN number and said they could reprogram the ECU according to the TSB and fix it. There was no charge for the service and the problem is gone. Not all dealerships are the same.

Very Nice...I will try another...Thanks

 

[wild willy]

Today on my way to work the slip light came on and I was basically in limp mode all the way to work, so long as I did not give it more than about 1/4 throttle, I could get it up to speed. Got to work and hooked up scanner. Damn MAF code again, however, unlike all of the other times...the check engine light has not been on in a while, nor was it on this morning. I did not clear the light/code went into work to sign in and came back out. Light was out at start up and it drove normally the rest of the day.

 

[08AltimaDriver]

Today on my way to work the slip light came on and I was basically in limp mode all the way to work, so long as I did not give it more than about 1/4 throttle, I could get it up to speed. Got to work and hooked up scanner. Damn MAF code again, however, unlike all of the other times...the check engine light has not been on in a while, nor was it on this morning. I did not clear the light/code went into work to sign in and came back out. Light was out at start up and it drove normally the rest of the day.

Looks like I'm joining the P0101 club. Was on a freeway the other day, and all of a sudden the engine was being rev limited to 2000, speed was topping out around 90-95 km/h. Not the greatest situation to be in when on a busy freeway, no power to accelerate and make lane changes etc. Anyway thankfully I wasn't far from home. No check engine light, but scanned for codes, got a pending P0101. MAF sensor you say? Ok, checked out the area. Couple of things did jump out. The MAF sensor has the wire shrouded in a narrow passage in sort of a cartridge. Saw a tiny piece of leaf debris that was stuck on it. Just waved it around a bit and it fell off. Other thing (probably the real culprit), the hose clamp nearest to the throttle body was loose. Now with hindsight, I do recall noticing some occasional shudder at idle for the past few months, which I noticed but didn't do anything about. Possibly the vacuum leak finally got bad enough that the rev limiting happened.

Cleared the code, tightened up the clamp and did a test drive, everything works as it should now. Now I wait and see if this thing comes back like it does for you.

 

[wild willy]

Looks like I'm joining the P0101 club. Was on a freeway the other day, and all of a sudden the engine was being rev limited to 2000, speed was topping out around 90-95 km/h. Not the greatest situation to be in when on a busy freeway, no power to accelerate and make lane changes etc. Anyway thankfully I wasn't far from home. No check engine light, but scanned for codes, got a pending P0101. MAF sensor you say? Ok, checked out the area. Couple of things did jump out. The MAF sensor has the wire shrouded in a narrow passage in sort of a cartridge. Saw a tiny piece of leaf debris that was stuck on it. Just waved it around a bit and it fell off. Other thing (probably the real culprit), the hose clamp nearest to the throttle body was loose. Now with hindsight, I do recall noticing some occasional shudder at idle for the past few months, which I noticed but didn't do anything about. Possibly the vacuum leak finally got bad enough that the rev limiting happened.

Cleared the code, tightened up the clamp and did a test drive, everything works as it should now. Now I wait and see if this thing comes back like it does for you.

I do not want to jinks myself....I have not had the rev limit happen in many months...However...the Check engine PO101 will resurface at random Mile intervals....With No driveability issues

 

[wild willy]

Well...Happened today again...Went into limp mode on a long trip..fortunately it waited until I got of the Turnpike.......limped to my destination....parked for 3 hours..drove home with out issue. First time it happened with out a check engine light...just slip indicator. However...Po101 code did come up... Can not clear slip light with reader.....only way to get it off it to turn off the car.....I am not sure how you find such a problem

 

[BigTw1st]

Well...Happened today again...Went into limp mode on a long trip..fortunately it waited until I got of the Turnpike.......limped to my destination....parked for 3 hours..drove home with out issue. First time it happened with out a check engine light...just slip indicator. However...Po101 code did come up... Can not clear slip light with reader.....only way to get it off it to turn off the car.....I am not sure how you find such a problem

Have you had your ECM reflashed yet? Very common issue with altimas, sentras and verses and this fixes them 90% of the time. Look for a cracked intake boot between the air box and throttle body. I recommend pulling it all the way out to inspect thoroughly. My wife's 10 sentra had a big crack on the backside, saw it while doing an oil change. It wasn't causing issues yet but I still replaced it.

 

[wild willy]

Well, knocking on 80K miles door....Been turning the light off as it came on at random miles...no consistency at all. The other day it came on and I did not get around to clearing it.....What do yo'u know....it went out all by itself.....Interesting...

 

[wild willy]

Car went into Limp mode today at 80060 and actually shut off at a red light. Got it started and home in limp mode, PO101 code. Pulled MAF and cleaned it, cleared code....ran fine rest of day.......Has been a long time since this happened Aug 22, 2020 to be exact.....

 

[Nisstech]

This code is a real pain, ive been letting it go but neutral resetting every limp mode. Fuel mileage down alot. Now with gas so high, time to make it a priority lol.
12 altima 2.5 sedan
Replaced so far, MAF 3x with oem
Cleaned multiple times
New filter new hoses no vaccum leaks
Cleaned Throttle body
Idle relearn done 2000000x
Self learning done
closed throttle position done
Reprogram done


Whats next, ramming it into a tree.
As frustrating as it is sometimes.
Next move will be rewiring the sensor to the ecu and ground, intake gasket, throttle body gasket and then that random tree might pop up.

Anything you think i missed?

 

[wild willy]

This code is a real pain, ive been letting it go but neutral resetting every limp mode. Fuel mileage down alot. Now with gas so high, time to make it a priority lol.
12 altima 2.5 sedan
Replaced so far, MAF 3x with oem
Cleaned multiple times
New filter new hoses no vaccum leaks
Cleaned Throttle body
Idle relearn done 2000000x
Self learning done
closed throttle position done
Reprogram done


Whats next, ramming it into a tree.
As frustrating as it is sometimes.
Next move will be rewiring the sensor to the ecu and ground, intake gasket, throttle body gasket and then that random tree might pop up.

Anything you think i missed?

I have never solved mine....I just live with it. I have never had a change in MPG.