I have a two part question for you experts.I got a code p:0171 and a p:0174 emissions problem.it may include poor gas milage,decreased engine performance and hard starting.(message said this). while driving she felt fine,exhibited none of the above,and then the engine light cleared within 1-2 hours of going on . I had the car idling for about 15-30 min(it's cold as f*ck) could this have contributed to the code's being thrown? my second question is since it cleared amd seems ok should I bring it in to the dealer to look at?

edit:12,500 miles on the dash

 

i had the same problem , but only 0174.. basically, its the gas in your car.. use it up and re-fill it.. should be fine...dont get gas from the same place you got it from on this tank. i went to a gas station in a different town filled it up, about 3 days later when i hit 1/2 a tank of gas, i got the CEL. i pulled the battery. code never came back again

curious, did you have approx 1/2 a tank of gas?

 

less than a 1/4 I was slacking. I only use exxon super.(might try something else now though)

mine cleared itself while the car was on.......

 

mine didnt, i had to force it to clear... but never came back again. i had about....6k miles

 

SON OF A B*TCH !!! i just went to go get ciggarettes, and i threw the code !! This time, i got P1701.. last time, i had 1074 (bank 2)

wonder if its because its cold?? must be a WDP TL-S thing, huh?

talk about i-fck-ronic !!!

 

I’m by no means an expert and don’t know what these codes mean but I would definitely have it looked at. May not be anything serious now but if it leads to a problem down the road its documented with your dealer.

 

these codes really dont mean anything, if you call the acura service dept. they will probably tell you to run your tank empty, and get new gas...

if the problem PERSISTS, def. get it looked at !!

i had it happen once (12/17) P1074, and tonight P1071 (1/20)... both nights were like 15 degrees cold... so it might have somethign to do with that.

 

prob gonna take it to acura and see what they say. The cel is off but the message is still recorded in the navi. I ran that tank until the gas light came on and refilled at a diff exxon. the light cleared on the tank that set it off and hasn't returned. I'm thinking it has to do with the fact of the tl being a ulev and the below freezing weather but I don't know.I'll let the experts at acura give their ..........

I just think of it as it threw a code for a reason,and I would like to know why.......

 

my code was on all morning, turned off around 3pm with the same gas in the car.

i asked some of the guys @ Rallye Acura, they said it has something to do with my cold air intake... i dont know buy it.. they said not to worry about it, and like you and i both said.. car seems to be fine..

the message is HILARIOUS though

"there may be a problem with the emissions system...." that dudes voice always cracks me up when he talks..

its actually a really nice feature, that the car will display the CEL code and even give you a pretty good description of the problem. two thumbs up to acura for doing something nobody else has done yet

 

haha total I have no intake and threw 2 codes @ the same time. we'll see what acura around my way says.LOL Are we the only 2 this has happened to??!! anyone else in the tri-state area exp. this??

 

one other member had this problem, dont think he was from the area though

 

Wonder if the 06 throws the code in the MID too??!! Don't Think so

 

How are you guys reading the CELs?

 

07+ TL/TL-S has acuralink, so navigation actually displays the CEL, the code, and a brief description

 

ahh - damn. I took my car to a local tires plus shop and they said that they wouldn't be able to tell me what my CEL was for cause it's an Acura

 

I've had the same problem a few times and it tends to go away on its own.
I notice that its not too long after I put gas and when its running at 1/4 tank.

 

well guess its for you guys keeping your gas tanks full when the weather drops down, I currently have the fuel low message, and I have to go for a little drive in a few
so I am gonna put $5 and drive, you can't let the cold fuel sit in the car, even though gasoline will still burn at -100 degrees farenheit or whatever it is, I still don't like leaving a liquid in frigin temperature just sit

 

another reason the CEL might becoming on it because maybe you did not tighten your gas tank cover down all the way, or it might of come a little loose, ive had this problem before and also just a little fact about gas some of yall might know..
if your at a gas station and the big tanker is there putting the gas into the ground, go somewhere else, within 24 hours of that gas going in, it is getting mixed with alot of dirt and other stuff which is bad for the gas and for the car, so just give the dirt, sand etc..time to settle before getting gas at that place

 

^^ interesting response

the cap i ALWAYS tighten, but i never thought about the tanker adding gas to the ground.

I generally get gas at the same few stations in my neighborhood. first time i got the CEL, it was from a different station. yesterdays CEL was from my regular gas station.

and of course, only 93+ octane

 

well my CEL came on last night on the way home. even though it was late i popped on the forum to see what i could find and sure enough there was a thread about it

reading through the posts i decided not to worry too much since i noticed a few others experiencing very similar situations - CEL comes on when tank is half full (or a little less) and it's cold out (about 20 degrees). i went to a different gas station this morning to top it off... and 5 min later the CEL went off on it's own.

this forum rocks!

also, anyone know why this is a "problem" on the TL's when it's cold and the tank is half full?

 

I am at Acura Dealer right now.

Last night I got Shell V power in Indiana. CEL came on with both the codes for lean bank 1 and 2. Called Acura and of course could get no assistance on a Sun. That is BS they should have 24 hr help. All they would do is tow to dealer. Then I have my family in hotel.

Anway, here is where I am at:

1. Dealer checked it and all is fine. Drove away and light came back pon in 100yard so I took it back
2. Dealer check fuel pressure ok at 55 psi, checked other fuel stuff and all checked out.
3. Next action is pull out gas out of top of tank and see if it is contaminated. AT MY EXPENSE. About $100.
4. If it is contaminated then drop the tank my expense. It appears you need to drop the system to pull the tank. AGAIN at my expense.

My other options:
1. Drive it in lean conditon at expense of burning a hole in the piston. CAR has 8K miles
2. Load up car with STP or equivalent to remove water if that is what it is.
3. Call Shell an complain. See if the will pay. I have read posts where they see spike of complaints and quickly resolve with Dealer receipt
4. Drive it very lose and try other gas. I ran the Shell out last night as I was 5hrs from home. Then put BP 93 in and drove 20 miles. Same issue.

Any suggests of what to do????

Thanks,

PS... I am and automotive engineer and use to work at dealership. I know they can eat some of my charges. Will try that.

 

I had a similar problem. I stopped using 91 thrift gas and went to Chevron .. immediately after I got home I put in some SeaFoam and it hasn't come on since.

 

honestly, when its really cold, i throw this code all the time, and it clears up on its own. in the past 8 weeks of winter, ive probably thrown in like 6 or 7 times, and its cleared within 24 hours or less... im not worried... i think its just the cold weather and the fuel reacting in a negative way

 

if you are an automotive engineer than maybe you can fix it. our dealer has seen 3 type s come in with these codes. there is no fix that we know of. we have had one since november. techline refuses to deal with us anymore with these codes. we need an engineer to fix . we have drained the fuel, replaced every sensor, intake, cams, heads, pcm and just about everything except the short block and wire harness. i think the software has to be rewritten to work with this winter fuel we have.

 

funny thing this thread is brought up.. my girlfriend has a 2001 Honda Accord V6 Coupe, and she pulled P0171 this morning (Bank 1 too lean)

 

I'm just scared of cat failure,when I floor it or uphill I still get that burnt, nasty smell and these codes didn't make me feel any easier. To this day I still haven't seen them again(codes) and the stupid gas attendent put 1/2 tank of regular that I'm running on/out now.........

 

bump,haven't thrown those codes again but still whenever I go WOT or uphill I get that nasty burning smell. I'm at 13,500 miles. Any suggestions?

 

i keep throwing this god damn code... once every 2 weeks or so... it only stays on for a day

 

i searched to see how many other people are getting the P0171 CEL, and found this thread. some of the responses in here crack me up.

the common element here is that it always happens when it is cold outside. what happens when its cold? air is more dense, and things contract. when the air is more dense, if the ECU hasnt compensated quickly enough, it might not be giving enough fuel for the AFR. this would make things lean, but the ECU will eventually compensate and the CEL will go away after a few drives. more likely, however, is that you have a slight exhaust leak pre-cat because the pipes have contracted...this would mean the O2 sensor isnt seeing ALL of the exhaust gases and will read lean because of it.

hope this helps. this CEL isnt much to worry about 99/100.

 

BUMP F'IN COLD WEATHER

Yesturday my coworker caught a flat so I went to help her out. I had my 07 type-s running for light (hid fog's are awsome)for about 20-30 min as I changed the tire. When I returned to my car my cel was illuminated but there is no code or message anywhere. When I threw the 2 converter code's they were displayed in messages in the nav and are still there to this day. Did I throw the same codes cuz the date didn't change? This has happened before when I let it idle for about 15 min but cleared as soon as turned on/off or in a matter of hours. This time it's the next day and still hasn't cleared. any thought's? bad gas? cat going bad?

FYI:I'm at approx 25k now and still get that rotten egg smell when I go WOT. Acura said my cat is fine cuz the code's cleared.

 

those two codes are set due to bad gas or the additive the gas station put in their batch of gas which causes the mixture more towards the lean side.. changing parts will not help.. just make sure the pcm has the latest software and run the tank to almost empty and fill up premium at a different gas station.. takes few tanks of gas to get the fuel trim running right again.. however on the 07-08 tl-s its a faulty pcm software and needs an update

 

tsb on the issue, ECM needs to be reprogrammed with updated software:

TSB 08-043: (2007-2008 TL-S) MIL Comes on with ETC P0171 or P0174 (Fuel To lean)

http://www.in.honda.com/rjanisis/pubs/SB/B08-043.pdf

 

this is great im going to make an appointment i hope my dealership isnt goint to say anythig about my CAI from what i know dont they connect the HDS from inside the cabin meaning they wont even bother popping the hood open>

 

Had the same code p0174 on 07 tls wdp with 50000miles, took it to the dealer to clear it off the nav screen, now when its cold out, the only thing that comes on is the engine light on solid, but it goes away about 30min of driving,should i take it to the dealer?

 

I've noticed that when I let the car sit idle for 10- 15 minutes I would have the CEL come on. I have to agree that the cold air being so dense that once you start to drive again you go from warm / hot air under the hood to fresh cold air being sucked in causing a lean condition.

 

I have the code too and i thought it was because of the atlp jpipe. once i got back to the US from canada and filled up with good gas and dumped some techtron in there the car ran nice for 3 months. then a week ago it threw the cel again p0174 i was about to buy the pre cat deletes but now im thinkin its not even that. maybe bad O2 sensors???? or bad cats?? could it be a leak in the exhaust system?

 

A couple of members have mentioned this and I believe they are probably right. The air is denser and for those who are running CAI (or not), I believe it may be your MAF sensor. If it were the injectors or EGR / PCV valve you would be able to tell something's up other than a lean condition throwing a CEL. The dense air might be setting off an alarm telling the ECU the air is too dense throwing off the fuel - air mixture.. idk.. just a thought

 

I threw the P0174 code when I was letting my car idle in the driveway. The light went off, but when I went to get it inspected it still showed up so I failed my inspection. How long does the code stay in the memory??

 

i think u shud drive the car for about 60 miles or so and u shud be fine...thats what i was told by a shop at least

 

it stays in memory til u either clear dtc's or disconnect the battery for a lil while and reset the ecu.