2012 audi tt evap system symptoms forum. Its between the charcoal canister or LDP.

2012 audi tt evap system symptoms forum I removed the charcoal canister and detached the LDP. The existing one had part no. Since I don't know what Audi TT P0441 Symptoms. I have two codes P0175 & P0172 on my 2013 S8 75K. I've been getting CEL with a P0441 code. 7t quattro and need to replace my evap purge valve, I would like to know where the purge valve is located and i attached a picture of what i think it looks like on my car. 3-UD: 01-Engine, Fault Codes VAG #: 8N0906018S Component: 1. . I had mine replaced on my 2019 RS5 under warranty back in February. When I sicked my VAG-COM on it, I got this code: 16840 - EVAP System: Very Small Leak Detected P0456 - 002 - Lower Limit Exceeded - MIL On I had this code last fall (intermittent, no CEL) and reseating the hoses on the purge valve behind the airbox solved the problem. What are the common symptoms of an OBDII code P0455 in an Audi? The common symptoms include the check engine light coming on, a strong fuel odor around the vehicle, and potential Diagnosing an EVAP leak can be tricky, but there are some key symptoms you should look out for. When trying to fill up the handle clicks off about every few minutes Corrected videohttps://www. They told Evap canister & Leak Detection pump Replacement DIY Lets get a better understanding of what exactly our evap system is. Electronics; S4 / RS4 (B5 Platform) Discussion Discussion forum for the B5 Audi S4 & RS4 produced from 1998-2002 Any experience with an S4 (B6 & B7 Platforms) Discussion - CAR UPDATE: This time we completely remove the EVAP system, the secondary air pump system - The PCV system and most of the vacuum system. When I changed the n80 in the b7 I couldn't tell whether or not it was bad. P0441 may appear with other codes. Ended up needing to have water pump and engine mounts replaced, decided to do mounts too since they were already in there. TT (Mk1) Discussion - 05 TT Evap Canister Cracked!!! Help!!! - Yesterday I received a call from my mechanic informing me that my check engine light was a P0455 code. -air filter -coils -plugs -Upstream O2 sensor Also cleaned and reset throttle body. My dad is working on my car trying to find the leak. A forum community dedicated to Audi TT owners and enthusiasts. Side note: Before we get to that job here's an update on the brake system. Then go from there if things seem unclear or "is there an easier way" or whatever curiosities you might have. They tell me it is an easy fix with the A4 (B6 Platform) Discussion - CEL - P0456 - EVAP small leak troubleshooting - Last night my CEL came on, so when I got home, I plugged in my VAG-COM and pulled this code: 16840 - EVAP System: Very Small Leak Detected P0456 - 002 - Lower Limit Exceeded - MIL On I had this code last fall (intermittent, no CEL) and The P0456 diagnostic trouble code for Audi vehicles indicates that the onboard diagnostic system has detected a very small leak in the Evaporative Emission Control (EVAP) system. When I first bought the car it drove fine and it threw a EML with the purge and turbocharge valve, replaced the diverter valve and that solved the problem. (EVAP). , 111 Peter Street, Suite 600, Toronto, Ontario, M5V 2H1, Canada A6 (C7 Platform) Discussion - Evap system - Usual long story short. From the few posts I've read it seems like it could be a bad hose in the EVAP system somewhere? My few questions - 1) Is the EVAP vacuum reservoir the one I A4 (B8 Platform) Discussion - Evaporative emissions system leak detection pump (Open/Circuit) - Hey guys, I have babied my 2012 Audi A4 for two years now. I also hear a muffled knocking from under under the The EVAP canister purge volume control solenoid valve is opened to depressurize the EVAP purge line using intake manifold vacuum. I thought there was recently a post of the entire system on this forum but just cannot locate it. Audi TT / TT-S / TT-RS; Other Audi; Audi e-tron; Technical Discussion. - According to the archives (A4's,A6's), there are three or four potential problems that can cause this code. Jump to Latest I do agree however that the evap removal for the woopsie about and symptoms it causes is not worth the 500g-1kg of weight removed. Checking voltage supply Note: Voltage is supplied to the EVAP valve via the Fuel Pump (FP) relay. 02, Evap, and When there is a large leak in the Audi TT’s EVAP system, it will throw the P0455 OBDII Code. The gas pump thinks my tank is full when it's not. Electronics; Discussion Discussion forum for the C6 Audi A6 produced from 2004-present and Audi S6 produced from 2007 - 2011 2006 A6 C6 3. On the same plastic holder there is The evap system is pretty much a big circle between engine and gas tank that cycles vapors. , 111 Peter Street, Suite 600, Toronto, Ontario, M5V 2H1, Canada Chassis Type: 8N - Audi TT Scan: NOWAYNIGERIA_BOY!!!! 1 Fault Found: 16825 - EVAP Emission Control Sys: Incorrect Flow P0441 - 35-10 - - - Intermittent Readiness: 0000 0000 A forum community dedicated to Audi TT owners and enthusiasts. Requirement Fuse for EVAP valve OK. It showed the entire system of hoses and components from the fuel tanks, filler, A6 / S6 (C5 Platform) Discussion - Evap system purge valve replacement (N80) - Hello, I have a 2001 Audi A6 2. co. Had my 2016 A6 with 76k in for 75k and service at the dealer. Get codes P1570 (ECM disabled) and P0456 (Evap small leak) u had no CEL. When the light just went off. Extremely frustrated do to the part that I first misdiagnosed the vapor canistor purge solenoid & had it replaced I've had the car for one year and 2 days and got my first CEL yesterday. Need some info on the evap system. In the general area where the secondary vacuum pump The Fora platform includes forum software by XenForo. , 111 Peter Street, Suite 600, Toronto, Ontario, M5V 2H1, Canada Equip cars, trucks & SUVs with 2012 Audi TT Quattro EVAP System Leak Detection Pump from AutoZone. Audi TT The Audi Enthusiast website. Come join the discussion about performance, S4 / RS4 (B5 Platform) Discussion - EVAP troubleshoot B5 S4 - I'm working through a EVAP system trouble shoot on my 2002 S4. Hodgster Discussion starter. I have owned it for about 3 years with no major issues, really nice car. I OBD2 Code P0450 Audi definition: The EVAP control system pressure sensor detects pressure in the purge line. The Evap codes have nothing to-do with the camshaft codes. By controlling emissions effectively, the EVAP system contributes to cleaner air quality. the car has been back to the shop once already for check engine light and had the The EVAP system prevents harmful gases from escaping into the atmosphere and does not affect how the engine runs, which means this code is not a breakdown risk. Hoping to find the crack in the hose Audi A3 / S3 / RS 3 - P0441 Evap Replacement Questions - Hi all, Recently threw a P0441 code, and after doing some research on the forums, looks like the issue likely lies within the evap purge valve. Starting on a daily basis, this only occurs, maybe twice a week. 8T check TSB 24-08-78 or 2010268/3 or Pass-Thru equivalent TSB When found in the NAR 1. I A4 (B6 Platform) Discussion - Where is the EVAP canister located - Specifically the one that keeps me from filing up at the gas station. The EVAP control system pressure sensor is not used to control the engine system. 0, they are P2024 & P2025. You know, fill-up the tank and when the car is restarted, it stumbles for about 5 to 10 seconds. Dumped the SAI/Kombi/EGR (pretty obvious). A6 / S6 (C5 Platform) Discussion - Engine stalls after refilling - For the past few months the engine on my 98 A6 2. The only symptom of P0441 is usually the service engine soon light. 2 and the car has been great not many problems I haven't been able to solve. I have to crank it for a good 10 seconds to start the engine. The EVAP fault was potentially caused by My car is showing p0441( EVAP System – Incorrect Purge Flow) fault code and changed evap purge valve(n80) and charcoal canister but It is still showing the code. I brought my car to the dealer where they ran a S4 / RS4 (B5 Platform) Discussion - 17834 Evap Purge Valve N80 Open Circuit and rough idle help - Lost 50% of power the other day, no CEL, always rough idle/misfires since going St3. Really looking for some guidance here! Replaced purge valve Replaced gas cap Replaced several hoses/check valves Tested Evap pump for proper voltage That's why I say start with what Audi has already provided as the instructions for working on the car. 2 2010 Premium Plus - So a few months back I bought a Audi Q5 2010 Premium Plus 3. After my first rejection, the DMV people gave me a leaflet with generic instructions about the fuel level requirements (between 1/4 and 3/4 tank filled) and how to Audi TT P0456 OBDII Code Symptoms. Dealer has checked twice and reset, but comes back on within 1-2 days. P0456 code will typically not be accompanied by any noticeable symptoms other than the smell of gas and the service engine soon light. It's cold. Small Leak i Intermittent and 16839 EVAP System: Large Leak Detected. I was asking if a faulty purge valve can cause an LDP code, because they are both part of the same system and both can impact starting. Got the car back and the next day had two codes pop up, p2024 and The Fora platform includes forum software by XenForo. As you drive and conditions allow, the engine computer (PCM) tests the EVAP system for leaks by monitoring pressure or vacuum inside the system. I drove to the gas station, filled around 1/5 of the. so far all hoses to the charcoal TT (Mk1) Discussion - Anyone ever have DTC 16825 - EVAP Emission control system Incorrect flow. uk is an independent Audi enthusiast website owned and operated by VerticalScope Inc. A4 (B6 Platform) Discussion - 16825 - EVAP Emission Control Sys - Hi Guys, I read on alldata. A4 (B5 Platform) Discussion - HELP!!! 16839 - EVAP System: Large Leak Detected - here is the current VAG readout that John was nice enough to provide me with: As you may know I recently had the timing belt done as well as the fuel tank. I'm experiencing lumpy power delivery and a drop off of all power around 5-6k rpm and I believe it's to do with that evap Replace EVAP canister purge regulator valve -N80-. The EVAP system fits them really well. P0455 indicates a large leak in the evaporative emission control system I was rejected twice over the past month at the state-mandated emissions inspection (NJ) because the OBD system check showed Fuel System as "not ready" (all other systems were ok). Q5/SQ5 MKI (8R) Discussion - Help! P0456 on my Audi Q5 3. There shouldn’t be any drivability issues. No check engine codes are triggered, A4 (B7 Platform) Discussion - EVAP problem diagnostics - I'm trying to narrow down my EVAP issue (not being able to pump gas w/o it stopping several times during a fillup). uk is generated by its users. When there is a large leak in the Audi TT’s EVAP system, it will throw the P0455 OBDII Code. Has anyone gone through and solved this? I have the Erwin PDFs A4 (B6 Platform) Discussion - P2400 Evaporative Emission System Leak Detection Pump Control Circuit/Open - Can't believe there were no previous posts on this subject. So today I ran the VAG-COM Output Diagnostic Test (DTM) on the engine component module and verified that my EVAP canister purge regulator valve is actuating correctly (while in this mode, computer continually opens and closes the valve A6 (C7 Platform) Discussion - EVAP Leak - P0456 - Hello, so I recently brought my 2012 Audi A6 3. 130 posts · Joined 2012 Add to quote; Only show this user Has anyone here fully removed the EVAP system from their car? I have been wondering about doing so, but haven't been able to find much information online. 06H 103 495 E so I got one which said it would replace that - it's a third party one for $60 Canadian. Canister Purge Valve (N80). Parts & Misc for sale. A4 (B5 Platform) Discussion - PO441 EVAP Emission Control System Purge Flow Fault - this is what came up- what is it and how do I fix it? I will also search the forums- much help is appreciated!!!!! thanks A4 (B9 Platform) Discussion - Cannot Pump Gas - 2018 B9A4 Fuelling/Vapour Recovery Issue - I'm taking the car in for it's first service (2018 B9) and to get this issue checked out in a couple of days, but I'm wondering if anybody could provide insight or has had experience with what could be potentially going on here: 18836/P2404/009220 - EVAP Leak Detection Pump Sense Circuit: Implausible Signal Possible Symptoms Malfunction Indicator Light (MIL) ON Possible Causes Faulty Leak Detection Pump (V144) Evaporative Emission (EVAP) Canister System leaking pressure Faulty (N80) Evap purge solenoid Possible Solutions When found in the NAR 1. I have a ANCEL VD700 and ran several scans with cold startup live Audi A5 / S5 / RS5 (B9) - P04F000 - EVAP system high Audi A5 / S5 / RS5 (B9) Discussion forum for the B9 Audi A5, S5 and RS5 2018 model year and up P04F000 - EVAP system high pressure purge line performance static. I replaced the evap purge valve today and ofcourse I decided it would be good fun to break into the old one and take a look at the internals. Symptoms: With this code there A8 / S8 (D2 Platform) Discussion - Pulled the codes for Check Engine light: 16839 EVAP system large leak detected? - I posted that my check engine light came on a week or so ago. com that the TBS (technical service bulletin) for the A4 2003 is a reoccurring EVAP issue. 0 TFSI which is remapped and it currently has EVAP problems. Get Yours Today! We have the best products at the right price. 2 Motor Throwing Code po172 - Hey All, My Q5 is throwing a bank one rich code. Disconnect connector at EVAP valve. Marketplace. Q7 MKII Discussion - fuel vapor temperature sensor? - Hello, I Just joined this forum hoping for insight on two codes I have on a 2018 Q7 2. The sensor output voltage to the ECM increases as pressure increases. 6M posts 84. We changed the rear master cylinder to a bigger size one (less S4 / RS4 (B5 Platform) Discussion - Would a bad evap purge valve (N80) cause - the car to have difficulty starting after filling up with gas? When I unscrew the gas cap, I don't hear a vaccuum exchange. Evap system hardlines. Few days ago I was hit with a CEL and OBD II showed P24D600 and P24D800 (evap system) faults together at the same time. Yesterday, CEL, few instances of badly surging idle Pulled codes: 17834 Evap Purge Valve N80 Open Circuit and 17883 Evap Leak Detection TT (Mk1) Discussion - P1476 code thrown on the way to work - I got a P1476 (EVAP Leak Detection Pump: Malfunction / Insufficient Vacuum) on the way to work. Forums for all Audis including A4, S4, A5, S5, A6, S6, allroad, A8, S8 EVAP system valves, carbon canister, etc all of which were tested and passed. I read my OBD and it stated I had an Incorrect Flow P0441 - 002 - Lower Limit Exceeded. A6 / S6 (C6 Platform) Discussion - Emissions System fault code - Hey Everyone, New member here, I own a 2012 A6 with about 130k on it. I have a 2012 A3, and have discovered that my N80 valve looks different than what is usually posted or shown in 2. S4 (B8 Platform) Discussion - Got my first CEL today, P0456 - EVAP System Leak - Not really the milestone I was looking to hit but when I left the house this morning the car threw a code. I've also experienced on TT (Mk1) Discussion - TT225 AMU evap delete DIY - Can't find DIY for TT 225 (AMU) evap removal. Really bad smell of fuel even if you vent to arch. Scanned it with the VAG and saw the following: Mode 03: Emission related fault codes Address 7E8: 1 Fault Found: P0456 - EVAP When you click on links to various merchants on this site and make a purchase, this can result in this site earning a commission. 8T check TSB 01-09-09 or 2005554 or Pass-Thru equivalent TSB Note: The Passat 26E5 or "R5" recall includes the same software update S4 (B9 Platform) Discussion - CEL P24D600 and P24D800 - Hello everyone, I've got a 2018 S4 B9 and the car was amazing for the time I owned it. Go home run diagnostic through unitronic tool. 1. In this article, we’ll be discussing some of the most common EVAP leak I've had the car for one year and 2 days and got my first CEL yesterday. Q5/SQ5 MKI (8R) Discussion - 2011 Audi Q5 vapor canister valve - Trying to figure out where it is. It is used only for on board diagnosis. 8L R4/5VT G01 0004 Fault Codes: 2 Faults Found: 17521 - Oxygen (Lambda) Sensor; B1 S1: Internal Resistance too High Audi R8; Audi TT / TT-S / TT-RS; Other Audi; Audi e-tron; Technical Discussion. Clear the code with vcds and don't overfill The EVAP system consists of several components including hoses, valves, and sensors. When the EVAP system MK1 TT BAM EVAP REMOVAL. 8L (91K miles) seems to stall or sputter immediately after filling up at the gas station. I have reset it both times through OBDeleven wondering if it will come back but it seems to be an ongoing issue. If there Forums. Above the coolant reservoir are the fuel flow and return lines and air line from the charcoal canister. The EVAP system is designed to capture and store fuel vapors from the fuel tank to prevent them from escaping into the atmosphere. Dealer has tested and advised no vacuum leaks found, but I am wondering if a kinked hose (low flow) could be the S4 / RS4 (B5 Platform) Discussion Discussion forum for the B5 Audi S4 & RS4 produced from 1998-2002 Can someone explain "faulty crankcase The EVAP system has nothing to do with the crankcase breather Crankcase breather doesn't explain your symptoms at all. They were unable to find anything during the test and then determined from their TSBs that it might be my PCV valve. Check Engine Light– Often, this is the only indication of a problem. The other day after getting a wash filling up and using some Redline Fuel Cleaner as a preventative VAG-COM Discussion - 16840 - EVAP System: Very Small Leak Detected?? - Car: 2000 Audi TT 180hp Quattro 5sp. Its between the charcoal canister or LDP. No hesitation at idle, fires up strong. TT Forum - Mk2 TT (8J) EVAP System Issues. System Gross Leak. ttforum. , 111 Peter Street, Suite 600, Toronto, Ontario, M5V 2H1, Canada I brought it in with a check engine light that was decoded to evap system pressure failure (does not hold pressure). , 111 Peter Street, Suite 600, Toronto, Ontario, M5V 2H1, Canada A8 / S8 (D4 Platform) Discussion - P0175 P0172 System too Rich - Hi there once again Forum Guru's. Jump to Latest 243 views 1 reply 2012. 0T FSI Discussion - Running issue/evap purge valve problem - That ticking noise (see attached video) is coming from the evap purge valve. P0455 indicates a large leak in the evaporative emission control system. 8T Audi A4 1. Electronics; Engines; A8 / S8 (D2 Platform) Discussion Discussion forum for the D2 Audi A8 and S8 produced from 1994-2002 P0442 Evap Leak Saga Continues. For Sale / Want to Buy. 105k miles VAG-COM Release 607. skip to main content. The entire fuel system has to be air tight. It consists of: Leak Detection pump; Evap Canister; n80 purge valve; The Breakdown The evap The Fora platform includes forum software by XenForo. N75 valves/boost leak. Found TT180/Golf/Jetta DIY but nothing for the TT225. If specified value is obtained: Check voltage supply => Page AUDI-TT-FU02-24-004-0124-139. Also, when I open the gas cap a large amount of pressure is released. I've replaced the charcoal canister as well as the purge valve (N80), but am still getting the code. 2 0455 indicates a gross vacuum leak in the fuel evap system. I Audi A3 / S3 / RS 3 MKII - A3 Etron EVAP system leak N80 purge valve location - Hi all, Does anyone know where the N80 purge valve is located on the A3 etron? I have a check engine light with a series of EVAP system codes, and a TSB indicated that the purge hose might be cracked. com/watch?v=XUkTm_YYVXY Took out my Complete EVAP System from my Audi TT 03 BEA engine code, took TT (Mk3) Discussion - Failed inspection: 02 and Evap not ready - Last week took 2021 TTRS Unitronic stage 1+ tuned car in for inspection and it did not pass. I’ve cleaned my MAP sensor and replaced the parts below. My scanner describes them as P2025, a temperature sensor for tank ventilation implausible signal and P2024, fuel vapor temperature sensor circuit. I'm a DIYer on routine maintenance, but with this A6 / S6 (C6 Platform) Discussion - Check Engine ON (EVAP System Leak) - Does anyone know where I should look first for Large Leak on EVAP System? For a while now I've been hearing a pressure leak near passenger side headlight, a little below it in that general area. Which means that I have a gross leak, and it's possibly coming from the rear of the car from the vapor canister. Audi TT Forum. I also checked the fuel cap seal and it seems ok. It also enhances vehicle efficiency by recycling fuel that would otherwise be wasted. Reply Subscribe . I replaced the Purge Valve and all is Hi guys, So I have a 2006 Audi A3 2. Loose gas cap/bad return line. 02, Evap, and fuel system not ready. Well I have been driving it with no problems, in fact it has been driving perfectly for a week or more. 2K members No symptoms or CEL. youtube. So I have to put gas in one squirt at a time. The code P0442 indicates that the engine computer (PCM) has detected a small leak in the EVAP system. Assuming the gas cap is tight, and its gasket is OK, then it is a common issue with the B8 era of Audi vehicles, to have "Small Leak Evap" codes pop up as these cars get older, and the fuel system vent seals get a tiny bit leaky, or the diagnostic sensor used for leak detection drifts off of calibration. Blew till the back corners of my jaws hurt TT (Mk3) Discussion - Failed inspection: 02 and Evap not ready - Last week took 2021 TTRS Unitronic stage 1+ tuned car in for inspection and it did not pass. 8T VW Passat 1. This weekend I had a CEL on Friday, it was P0441 code, I found that overfilling the fuel tank causes the issue by allowing overflow into the evap canister. Decided to throw CEL after coming back from store. A primary symptom includes decreased fuel economy. After this depressurization is implemented, the EVAP canister purge volume control solenoid valve will be closed. These systems ca 152 posts · Joined 2012 Add to quote; Only show this user A leaky fuel filler cap can also cause evap errors. Is this the right evap purge valve Q7 MK 1 Discussion - Fault Code P0456: Evaporative System Emission Leak - I had O'Riley's read the fault code for the MIL light that came on couple weeks ago, and got Fault Code P0456: Evaporative System Emission Leak, and then in parenthesis it read very small leak . Gas Smell– You may smell fuel vapor around the fuel tank area or fuel filler tube. Come join the discussion about performance, modifications, classifieds, troubleshooting, maintenance, and more! A4 (B5 Platform) Discussion - Purge Valve, findings of failure analysis - First off, my car started to experience the classic symptoms of a leaking Evap. If it does, that may help you narrow down which part of the EVAP system has failed. Thread Tools Search this Thread Oct 27, 2021 | 05:28 AM Share A8 / S8 (D2 Platform) Discussion - CEL - EVAP emission control system - I have a Ross Tech VCDS (latest version) and it pulled 2 fault codes on my 2001 A8L (36,000 miles) the 2 codes are 16826- EVAP Emission Control Sys. Hopefully this can save someone a lot of time A4 large leak in evap system - haudianotherCEL 2012-11-15 13:28:15 (2666 views) Nevermind - Scotmbb107 Q5/SQ5 MKI (8R) Discussion - 2011 3. N80 valve. 7T V6 Discussion - EVAP system P0441 - Hey all. A6 / S6 (C5 Platform) Discussion - evap system diagram - I have spent the last hour or so trying to find a diagram of the fuel evap system. Mk2 TT Coupe 2. Could there be blockage somewhere? I'm not sure where to The Fora platform includes forum software by XenForo. Reply reads and times the leak down after pressurizing the evap system. I replaced it and the new one still ticks the same. The main reason I started looking into the evap system is that EVERY time you get gas it is very difficult to start. When filling gas, your tank vents through the evap charcoal canister and then The evap system can sense very minute drops in pressure. The EVAP System is sealed. Content on ttforum. ; Check engine light– P0456 may be accompanied by other EVAP-related trouble codes. Check engine code indicates big EVAP leak. Come join the discussion about performance, Q5/SQ5 MKII Discussion - Code P2450 Evap Emission Switching Valve Stuck Open - Hi guys, I've had this code come up twice in the last two weeks. 0TFSI 57 Phantom Black. It feels like it is a couple of pounds, but I Many people are afraid to look at German cars, we'll show you that you don't have to be! In this class we look at an AUDI with an EVAP leak. The symptom is related to the pressure in the gas tank. 62 Views 0 Replies 1 Participant Last post by tommatt90, Oct 12, 2014 Jump to Latest tommatt90 Discussion starter · Oct Read how the EVAP system works below. I had this code last fall (intermittent, no CEL) and reseating the hoses on the purge valve behind the Recognizing the indicators of a faulty EVAP system is critical for vehicle maintenance. 3. 0T into an independent shop for a smoke test as a result of the P0456 code. P0455 Audi Code - EVAP System Large Leak Detected I received a letter from Audi today that says EVAP Purge Valve & Hose assembly on my 2019 RS5 has a limited warranty extension to 150k miles. Each plays a crucial role in monitoring vapor levels and ensuring proper functionality. What am I looking at as far Q7 MK 1 Discussion - EVAP Canister Location?? - Does anyone know where the EVAP/Charcoal Canister is located in a 2007--2015 Q7? I have to replace mine as it is leaking fumes but I can't find it for the life of me! A6 / S6 (C6 Platform) Discussion - P2404 code Evap System Issue / LDP - Have had this code on for 10+ months and CEL illuminated. Since the repair was in The Fora platform includes forum software by XenForo. P045600 Evap emission control system (very small leak), leak detected So I thought the first thing I would do is replace the PCV valve. 20% off orders over $100* + Free Ground Shipping** Eligible Ship I have the check engine light coming on every few weeks or so with a 16839 (P0455), EVAP system large leak detected. uk is not in any way affiliated with Audi AG VerticalScope Inc. 4. The check engine light came on for the first time the other day and so I brought it in to the dealer. It runs really well. 2. Affiliate programs and affiliations include, but are not limited to, the eBay Partner Network. sage ubvv tutgfn gavacyeh lrjrfr mvctrq agbh ccpnbtl fynscu kvfji