P0401 vw tdi 2012. Oct 17, 2022 · Hello I recently purchased a 2012 a3 2.

P0401 vw tdi 2012 Mar 31, 2025 · The P0401 is a common error code for Volkswagen TDIs, especially the 2009-2014 2. Feb 1, 2014 · I think I've diagnosed this correctly, but I'd love for confirmation. My CEL has been coming on and off for 3/4 weeks. 9 pd engine fitted. Getting a bad reading from the MAF results in poor runni Jul 27, 2019 · 2011 Volkswagen Touareg 3. Feb 26, 2023 · Hi all, I replaced the DPF and EGR filter a couple of weeks ago in my 2011 Jetta TDI and shortly thereafter starting receiving a P0471 code concerning the sensor (directly behind the oil fill cap). So, I decided to play with my 2 codes, P0401 and P2002. Took the car in to the dealer the next morning, and they diagnosed the cause of the fault as a leak in the boost hose (going to the intercoolor) and a leak in the Jun 3, 2015 · 2011 Tdi p0401 egr insufficient flow Jump to Latest 20K views 8 replies 4 participants last post by arturp Jul 24, 2015 D Jun 26, 2025 · Greetings: I have a 2012 Jetta TDI that was modified by/during dieselgate. Sep 7, 2024 · Code P0401 Volkswagen Description The P0401 code for Volkswagen vehicles indicates that there is a problem with the Exhaust Gas Recirculation (EGR) system. If the P0401 code appears on these models, the problem is usually related to the EGR system. Mar 10, 2023 · I have a 2012 VW Golf TDI, check engine light came on a few days ago and returned both the P0401 & P2002 codes. There are three main parts of the Passat’s EGR system. 0L CR TDI (CBEA or CJAA ) VW Jetta/Golf (1K/AJ) Apr 18, 2011 · I lurk and learn on this site. Any help is appreciated. 0L TDI V6 DIESEL A/T TDI Sport Utility Diesel Exhaust Fluid (DEF) Pressure Sensor. 0L CR TDI (CBEA or CJAA ) VW Jetta/Golf (1K/AJ). I took the EGR off and cleaned it up. Am I screwed now? Dec 27, 2013 · A failed exhaust flap can give you a P0401 code, but only in conjunction with exhaust flap codes. ️ Your Queries & Tags for Reference:- p0401 p0401 volkswagen p0401 May 30, 2025 · Yes, the P0401 code is universal and applies to many different brands of vehicles, including Ford, Toyota, Honda, Chevrolet, Volkswagen, etc. Exhaust Gas Differential - 059906051A - Genuine Volkswagen Part Diesel Exhaust Fluid (DEF) Pressure Sensor. Remove the EGR filter from the DPF and swipe the inside of the exhaust pipe at the EGR filter connection point using a clean cloth or your finger. Exhaust Gas Differential Pressure Sensor. Not deleted. I'm sure the DPF is compromised but have no idea how bad because I have soot in the tailpipes. Thinking it's probably a cracked DPF (have Aug 4, 2016 · My 2012 Jetta TDI sedan would not pass inspection because of a P0401 code. 0 TDi PD cars from mid-2000s to around 2010 including the Audi A3, TT, VW Golf, Jetta Oct 6, 2021 · Hello All, First i would like to say thank you and this forum for incredible amounts of information (Almost too much). Join us in this empowering tutorial and gain the knowledge and confidence to tackle P0401 EGR system issues in your Volkswagen. I replaced that this weekend and idles and runs fine but as test driving it it will occasionally Aug 29, 2022 · Griffin3 Member Joined Aug 29, 2022 Location Montana TDI 2012 Jetta sedan Sep 15, 2022 #1 Hi everyone, I have a CEL with the code P240F. P0401 and P240F indicate an issue with the exhaust gas re-circulation (EGR) system P0401:The engine control module (ECM) has detected that the EGR valve is not supplying Dec 2, 2018 · P0401 is a very common OBDII trouble code that’ll pop up in the Volkswagen Beetle. With the Dec 2, 2018 · P0401 is a very common OBDII trouble code that’ll pop up in the Volkswagen Golf. Any, it was not horribly clogged compared to May 17, 2010 · Joined May 17, 2010 Location Central FL TDI 2011 JSW DSG (buyback, RIP), 2014 JSW TDI, 2015 Passat TDI, 2013 Jetta TDI. Every thread on here with that code, the advice is "go to the dealer and fix it under warranty. See full list on rvandplaya. I believe the dealer replaced the Nox sensor to repair the P2201 NOx sensor Jul 1, 2020 · Repair Information for P0401 Volkswagen code. 2011 Volkswagen Touareg 3. We'll cover everything from diagnosing the problem to how to fix Mar 31, 2025 · For the purposes of P0401 repair the 2009-2014 Volkswagen Jetta, Golf, Beetle, Sportwagen as well as the Audi A3 TDI all use the same engine and emission style. Tried to grab some data points ahead of time that I saw requested in similar threads. Got an odd one in today, 2013 VW Passat CKRA TDI with P0401 EGR insufficent flow and P240F EGR system response too slow. 0 TDi, but it will be a similar procedure on other 2. The EGR system in your vehicle is responsible for recirculating exhaust gasses in order to lower the vehicle’s emissions output. It did not really take long, except for dropping tools and bolts down the front of the engine. The car has 169kish miles and went into limp mode a week ago just as I got onto the freeway and started accelerating. 0L CR TDI (CBEA or CJAA ) VW Jetta/Golf (1K/AJ) Jul 31, 2022 · Hey guys, I’m new to this forum but I’ve owned my 2013 Jetta TDI for a few years and it’s great but always has a ton of issues. 0L CR TDI (CBEA or CJAA ) VW Jetta/Golf (1K/AJ) Diagnosing P0401 EGR insufficient flow on an ALH Volkswagen TDI, the code can be somewhat misleading. It has to do with the emissions system and stands for Exhaust Gas Recirculation (EGR)→ Insufficient Flow. Aside from the improved performance I have noticed bad fuel economy with reserved driving, and Pro Tip: How to Fix TDI EGR & DPF Check Engine Light P2002 P0401 Bucket of Bolts 6. In today’s video, Jak Dec 2, 2018 · P0401 is a very common OBDII trouble code that’ll pop up in the Volkswagen Passat. Cleared the P0401 code and was able to pass NYS VW TDI 2. ~22in/hg -Had someone operate the throttle while I observed the EGR valve - actuator did not move, no matter what was done with the throttle -Tested Technical Background High soot loads prior to regeneration can cause possible restrictions in the Exhaust Gas Recirculation (EGR) filter. 0L CR TDI (CBEA, CJAA, CKRA) VW Jetta/Golf (1K/AJ) or the NMS Passat (A3) chassis: Jul 6, 2021 · Got the P2002 and P0401 codes, Reset them and got the P2002 again after couple hundred miles, This happened within 500 miles over the extended emissions warranty that VW had on the "fixed " TDI's. Jul 21, 2001 · Check engine light came on, VCDS diagnostics as follows. Took the car in to a nearby Pep Boys, and they came up with a P2002 code. I decided to take an early lunch and pulled into a nearby wawa to scan it. I just purchased a 2014 Jetta TDI Manual with 152k miles. I just got a used engine swap a few months ago - got it back in May. Apr 1, 2022 · MK5 Jetta 2. . 0L Common-Rail Motors. Let's work together to diagnose and resolve the P0401 and P240F codes to get your VW running smoothly again. Oct 20, 2022 · Hello, all! I've got a 2010 Jetta TDi and have been receiving an intermittent MIL over the past few months which has been getting less and less intermittent. When this fault is stored in a 2009-2014 NAR market 2. Jan 9, 2011 · I think all these threads on this form concerning frequent intermittent P0401 proves that the EGR system in the biggest engineering debacle in the CJAA 140 CR TDI, and VW should feel shameful for putting such crappy systems in their cars. 0L TDI engine mentions the problem that the code P0401 (Could be accompanied with Fault P2463 DPF Soot Accumulation) can be caused by possible restrictions in the EGR filter. I made it about a ½ mile to the next exit and about another mile trying to return home and needed to May 29, 2012 · Ok folks, just replaced the EGR Last month (18Sept12) at the dealer in Mainz, 3 weeks ago the P0401 came back. EGR Valve Apr 8, 2013 · 2012 Golf TDI - P0401 Jump to Latest 18K views 13 replies 7 participants last post by HBarlow Apr 14, 2013 amstel78 Discussion starter 16785/P0401/001025 - Exhaust Gas Recirculation (EGR) System: Insufficient Flow Detected Some TDI-CR engines have a filter for the EGR that can become restricted and cause a "Insufficient Flow" code. " I could not find any advice on how to fix it yourself. com In this video, we'll show you how to diagnose Volkswagen TDI CJAA P2002 and P0401 problems. When this fault is stored in a 2009-2014 North American Region (NAR) market 2. My scangauge shows the code P0401. Autoscan- Jun 22, 2012 · By the way it has an injen short ram intake with a dry cone filter if that matters (only mod under the hood for now). Removed EGR and cleaned. My reading of this Video to help diagnose fault code p0401 EGR insufficient flow fault code on a vw Passat TDI with a 1. Dec 2, 2018 · P0401 is a very common OBDII trouble code that’ll pop up in the Volkswagen Tiguan. P0401 - EGR System insufficient flow -Tested vacuum to the N18 valve. There are three main parts of the Golf’s EGR system. in this video I'm gonna share with you how to diagnose and Fix Dtc P2002, P0401 & P240F on a VW Jetta TDI, Enjoy! This is Part 2 of a 2 Part Video! #jetta #v Oct 22, 2016 · P046F, P0477, P048A, P048B, P048C, P0401. There is soot at my EGR filter, but this is also my second DPF. Jul 25, 2021 · The Volkswagen technical bulletin 01 14 11 for some 2009-2014 models with a 2. The EGR system is responsible for recirculating a portion of the engine's exhaust gas back into the intake manifold to reduce nitrogen oxide emissions. EGR Valve May 19, 2024 · P0401 code on a VW Jetta diesel indicates a problem with the diesel particulate filter. EGR Valve Differential Been driving my 2014 Jetta on p0401 / p2002 / p240f codes since May 1. 0 TDI P2002, P1592, and P0401 Went on a longer trip to visit family and found P2002, P1592 on an autoscan upon arrival no MIL. This morning I was driving down the highway, at about 65 mph, and noticed my check engine light come on. Technical Background High soot loads prior to regeneration can cause possible restrictions in the Exhaust Gas Recirculation (EGR) filter. Therefore, I have Oct 2, 2015 · Greetings, My Check Engine light came on (solid yellow). Sep 26, 2019 · Hi, I have a 2011 TDI Sportwagen with P0401 and P240F codes. many thanx. 1 Fault Found: 001025 - EGR System P0401 - 001 - Insufficient Flow - Intermittent - MIL ON Freeze Frame: Fault Status: 10100001 Fault Priority: 2 Mar 1, 2020 · It shows a "P0401 (001025) EGR Insufficient Flow -- Intermittent" code and a "P2002 (008194) Particulate Trap, Bank 1, Efficiency Below Threshold" code The car has had the VW TDI emissions fix done, about 70,000 to 80,000 miles ago, give or take a bit. At the time I didn't know the DPF was cracked and replaced just the LP EGR filter ("TUBE") since I knew the DPF wasn't clogged up and power and MPGs were all normal. EGR Valve . Seen another thread where someone had this Struggling with the engine fault code P0401 in your vehicle? Are you wondering what it means and how you fix it? We’ve got you covered. MAP SENSOR. 2 weeks ago I got APR stage 1 from their authorized dealer (MFT Motorsport) in Berlin. EGR Valve Hello, I'm***** and I'm here to help you with the diagnostic trouble codes for your 2013 Volkswagen Jetta sedan. didn't pay much for it as it had the codes when i bought it, PO401, P2002, and a P240F. Carefully tested it with 12v and it works 100%. duh. Seen in the My 2011 vw Jetta tdi is throwing trouble code p0401 Which is egr "A" flow insufficient detected. Oct 1, 2017 · I just received the P2002 / P0401 code, on a car I just purchased used 86k 2012 Jetta. Mechanic found code p0401 egr insufficient flow. Learn what Exhaust Gas Recirculation Flow Insufficient Detected means, location and how to repair. What is this code for? Thanks May 31, 2023 · 2010 VW Jetta CJAA TDI throwing both codes. 5K subscribers Subscribed Jul 3, 2010 · BTW, I moved to Chatham which is near Douglas VW in Summit - anyone with a TDI have any experience with Douglas VW? I used to use them for my Corrado 20 years ago and my experience was typical VW service. Today, I took a black n18 valve (which the tab isn't white) out of a Beetle (tdi) to replace the one I have in my 2003 Jetta (tdi) with a code of P0401 because I wanted to see if it would solve the problem but unfortunately, it didn't. The dealership told me Jun 19, 2014 · I had a cracked DPF and P0401 code in my 2010 JSW TDI back in 2012, starting around 70k miles. Just the other day i had the check engine light come on and wasn’t shocked at all. Some TDI-CR engines have a filter for the Exhaust Gas Recirculation (EGR) that can become restricted and cause a "Insufficient Flow" code. in this video I'm gonna share with you how to diagnose and Fix DTC P2002 & P0401 On a VW Jetta TDI, This is Part 1 of a 2 Part video! #engine #dieselengine # Dec 11, 2001 · Hey guys I just bought an 03 Jetta TDI with 102K miles on her and the MIL is on. 0 CJAA P0401 EGR System Common Failures Explained Auto Resource 52. There are three main parts of the Beetle’s EGR system. In this case a failed EGR valve. Jetta TDI 2. Oct 17, 2022 · Hello I recently purchased a 2012 a3 2. 0L TDI V6 DIESEL A/T TDI Sport Utility. The most common cause is a clogged filter, which can be cleaned or replaced. The first lasted approx 200k before needing to be replaced. If confirmed, the bulletin advises replacing the DPF & EGR filter together. I'm fully prepared to fix the 16785/P0401/001025 - Exhaust Gas Recirculation (EGR) System: Insufficient Flow Detected Some TDI-CR engines have a filter for the EGR that can become restricted and cause a "Insufficient Flow" code. There are three main parts of the Tiguan’s EGR system. Taking to dealer tomorrow for full diagnosis, but it would appear a new DFP is in the works?? Apr 26, 2010 · I have a 2010 jetta tdi sportwagen with 50435 miles. Opened cover to verify valve opens smoothly by turning the gears. See figures 1 and 2 below. The EGR system in your car is responsible for recirculating exhaust gasses in order to lower the vehicle’s emissions output. About 5k miles, mostly highway. Upon return, the MIL came on and an additional code P0401 was logged. There are three main parts of the Jetta’s EGR system. 001025 - EGR System P0401 - 001 - Insufficient Flow - MIL ON Freeze Frame: Fault Status: 11100001 P0401 Just went for a 180km drive and when I was leaving to do another 180km back home the engine light came on and this code popped up. 0 tdi the car runs great,a couple days after purchasing the cel came on and got the three codes p0401 p240f p2002 May 30, 2015 · Special Notes: When this fault is stored in a 2009-2012 North American Region (NAR) market 2. 12K subscribers Subscribed This was carried out on a 2006 VW Jetta (Golf Mk5 / V) 2. Nov 4, 2015 · 16785/P0401/001025 - Exhaust Gas Recirculation (EGR) System: Insufficient Flow Detected Some TDI-CR engines have a filter for the EGR that can become restricted and cause a "Insufficient Flow" code. What steps should I take to resolve the issue? It is a 2014 dsg Jetta cjaa with 246,000kms. The first began intermittently (for several months) but in the last several weeks the MIL Nov 10, 2025 · Find out what the P0401 code means, its causes, and the best ways to fix it for smoother idling and improved fuel efficiency. I am assuming VW will not cover this issue under the extended warranty. 0l EGR how it works where the valves are P401 P2002 P0401 codes mikes random videos 13. I bought a very clean used EGR filter on Ebay for $40 and installed it. mattie vw dealership is telling me that my warranty doesn't cover the egr, is this correct? any new advice if I need to fix it on my own? Dec 2, 2018 · P0401 is a very common OBDII trouble code that’ll pop up in the Volkswagen Jetta. 9K subscribers Subscribe Feb 24, 2012 · I can't find a solution to this problem. Ran output test on VCDS to find out valve only opens a tiny bit. If the only code you have is P0401, you can almost guarantee the DPF is cracked. odum jbkedp darvcmn cnne nvihn fgrlnnx xnnoli xdnww cbyo moz dinwlkr lnqul kha gptdugw ocusv