P0401 vw t6. 1K subscribers Subscribed. . In this case, the code specifically points to a flow insufficient detected, meaning that there is a restriction or Aug 31, 2024 · Drove the van into town earlier and on the way back the engine warning light came up on the dash in orange. This recirculation process is supposed to lower the combustion temperatures and reduce harmful emissions. Well, regarding the temperature-dependant EGR operation - Mar 12, 2025 · Learn how to diagnose and fix the P0401 VAG Fault Codes. We have in a VW Transporter which is logging a P0401 EGR system insufficient flow code. We have sites booked and several visits planned. Apr 1, 2025 · The thermal window describes the outside temperature-dependent regulation of the exhaust gas recirculation. Oct 21, 2025 · EGR replacement DIY VW T6 2. The RAC warranty runs out the week Bij een probleem met de EGR Klep zal er een storingslampje oplichten en kan naast mogelijk andere foutcodes P0401 worden getoond. Sep 18, 2024 · [T6_measured] 01-Engine - Built-in test for EGR So it seems - inevitable P0401. Service Engine Soon Light– P0401 will illuminate the service engine soon light. Join us in this detailed tutorial as we unravel the mysteries behind the P0401 code, diagnose EGR-related problems, and guide you through the steps to address this common issue. Check engine light is on, but it turns off sometimes if I fill it up with diesel. It is regulated based on the operating temperature and engine load Nov 10, 2022 · How to Fix EGR System Issue on a Volkswagen Transporter T6 The Volkswagen Transporter series is one of the best in the world when it comes to the commercial vehicle segment. Once home, I plugged the Carista in and got the following fault code: P0401 - Exhaust Gas Recirculation "A" Flow Insufficient Detected Freeze frame : Calculated load: 51 % Oct 25, 2025 · My VW T5 2012 Diesel has Fault Code: P0401 – Exhaust Gas Recirculation Flow Insufficient Detected My mechanic doesn’t want to just put in a new EGR and cooler, nothing seems wrong with my van and it drives fine, doesn’t blow any smoke etc. In the video I show how Sep 7, 2024 · The P0401 code for Volkswagen vehicles indicates that there is a problem with the Exhaust Gas Recirculation (EGR) system. 2. Well, visited a VW garage to be tested - the van had accumulated 30 events in ECU's memory since July 2021 (since 20 months now). The result - Most of the time, there will not be symptoms associated with P0401 in the Volkswagen Transporter. Feb 17, 2023 · After spending a small fortune (luckily a lot covered by the RAC warranty) fixing numerous issues with my T6 including replacing drive shafts, stub shafts, alternator, front main oil seal etc. The small EGR Pipe on the rear of the engine can crack, causing exhaust fumes to escape. DIYDaly 72. Understand EGR flow issues, causes, symptoms, and effective repair solutions. Knocking Sound– In very rare cases, a noticeable knock may come from the vehicle. Read the code as p0401 P0401 - Generic Type Powertrain - Auxiliary Emission Controls - ISO/SAE Controlled Description Exhaust Gas Recirculation "A" Flow Insufficient Detected Wondering if any others have had similar before I contact Vw? The meaning of fault code P0401 DTC P0401 is registered by the engine control unit (engine control module) when it determines that an insufficient amount of exhaust gas is being redirected through the car EGR valve. Dit kan soms met een goede EGR reiniger worden verholpen. my van is finally driving great…. 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. A solution is in preparation for the affected vehicles (T6). Als alleen de foutcode P0401 wordt weergegeven duidt dit erop dat de egr-klep dicht blijft staan, meestal door vervuiling. until the engine light came on yesterday when on the M25 after about Apr 3, 2017 · Had an engine light on today. There may be a slight ping or knocking sound on rare occasions. Borrowed a code reader in the campsite and got EGR flow insufficient P0401. We will contact you as soon as it is available. 0 CXGB engine mono turbo Lucasimo 21 Jul 2025 Engine, Gearbox, Exhaust, Drivetrain Replies 2 Views 716 29 Jul 2025 VW T6 P0401 & P0121 EGR & throttle faults, new Genuine VAG EGR/cooler & throttle body fitted. Jul 24, 2025 · I have T6 150PS euro6 motion, the dreaded EML came on over 8 weeks back and at the time my van was under warranty with the dealership I bought it from, they paid for a the EGR valve replacement. Aug 7, 2023 · Macp M EGR valve p0401 Ryanpratt79 21 Oct 2025 General VW T6 Chat Replies 2 Views 346 22 Oct 2025 Ryanpratt79 May 5, 2023 · 2017 ex AA T6 150hp 6 speed manual Day 1 of our 3 week 1200 mile road trip with our newly converted van and the engine light came on. The vehicle has had a new EGR valve and mass air flow sensor fitted and when EGR test or MAF test is carried out using VCDS functions they both pass however the Aug 31, 2020 · Fumes In The VW Transporter, its a tricky one to track down, but here's the answer. Jul 21, 2001 · Check engine light came on, VCDS diagnostics as follows. 1. Eventually managed turn on the emission light at event number 31 - thus had a priviledge to have EGR flow tested. 1 Fault Found: 001025 - EGR System P0401 - 001 - Insufficient Flow - Intermittent - MIL ON Freeze Frame: Fault Status: 10100001 Fault Priority: 2 Jun 26, 2017 · Hi, I wondered if anyone may be able to help. dex wdux awiskg ctxkbf vqfop zprwn bxjfc mgha nhzqw dpnaq