Address01: Engine (CDA) Labels: No SW: 8P7 907 115 K HW: 8P0 907 115 Q Component: 1.8l R4/4V TFSI 0020 Revision: AAH15--- Serial number: AUX7Z0J1FN40UC Coding: 0143000C18070060 Shop #: WSC 66565 257 00032 VCID: 41832EF1186C67106E2 2 Faults Found: 000772 - Cylinder 4 P0304 - 000 - Misfire P0420Diagnosis: Audi A4. The most common fix for P0420 in the Audi A4 is a new catalytic converter, followed by an O2 sensor replacement. Before taking your A4 into an exhaust shop for an (expensive) new catalytic converter, let’s ensure that’s what you need. Here’s a good P0420 diagnostic order for the Audi A4: 1. Check for Other Codes. hiI have a problem with my audi a4 1.8t it starts by bogging sound than idles fine after some few minutes ,when approaching a traffic lights it just goes off and it will take for ever to start. checked spark,gas,compression, new fuel pump in,coil packs are new ..I don't know where to look. when plug removed I can see piston shining fuel on it. Shopfor New Auto Parts at Auto shows you how to repair, install, fix, change or replace a dirty, dusty or cl See23 results for Audi A4 1.8t engine for sale at the best prices, with the cheapest car starting from R 14 500. Looking for more cars? Explore Audi A4 cars for sale as well! Howto troubleshoot and fix a misfire on your Audi vehicleFix Misfire on Audi | Misfiring Cylinder Check Engine Light P0300 Code#MrCarMANSome Check Engine C AudiA6 - P0441 EVAP Purge Valve problem solved !!! - Well, i been fighting with my check engine light cause P0441 EVAP Purge Valve , but today i found solution, how to fix it. At first, u need to check resistance with digital multimeter. Usually should show about 22 - 30 ohms. Then check harness. Should show between TheAudi A4 (B7) Avant 1.8 T has a Inline 4, Petrol engine with 1781 cm3 / 108.7 cu-in capacity. How many horsepower (hp) does a 2004 Audi A4 (B7) Avant 1.8 T have? The 2004 Audi A4 (B7) Avant 1.8 T has 163 PS / 161 bhp / 120 kW. xcVQ.