Audi Q7 non runner P0091 Fuel pressure regulator fault, finally back on the road after 12 weeks!

Investigating a non start fault on this 2014 Audi Q7. Permanent fault code P0091 fuel pressure regulator 1 fault stored in the engine ECU. I got this one wrong 1st time! testing of the regulator was carried out and it didn't show any faults but I wasn't 100% that it still wasn't the regulator so replaced it but unfortunately I got it wrong! Fault turned out the be the Engine ECU.. After a long wait a new ECU was fitted and this Audi is back on the road! Check out the Topdon Phoenix lite 3 on my store - https://diydaly.co.uk/products/phoeni... New Fuel pressure regulator : https://ebay.us/ZICvVk Part no . 0928400799 Tools used: 3/8 stubby ratchet - https://diydaly.co.uk/products/us-pro... Socket set - https://ebay.us/DjgPPj Screwdriver set - https://ebay.us/W79UkN 3/8 Impact driver - https://ebay.us/ZtxrBu Fluke Multimeter - https://ebay.us/wzG0tI DISCLAIMER: Links included in this description might be affiliate links. If you purchase a product or service with the links that I provide I may receive a small commission. This doesn't affect the price you pay! Check all the Topdon diagnostic machines available on my website - https://diydaly.co.uk/collections/dia... Any Donations to help Support my Channel are much appreciated. Donate via Paypal - https://paypal.me/diydaly Check Euro car parts - https://tidd.ly/3lIO7xA (use discount codes on site) Useful links: Car Analytics - Vehicle information checker - https://tidd.ly/3B2PEbx If you found this video useful, please Like Share and Subscribe to help grow the channel, and never miss any future content. https://www.youtube.com/user/gavdaly?... Please also check out my website - https://www.diydaly.co.uk where you'll find top quality goods, tried, tested and recommended by actual mechanics.