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2018 Audi R8 Plus 5.2L Failed readiness
Posted to European Driveability on 6/28/2025 5 Replies

Hi all, this car failed the smog test, and the oxygen and cat readiness never set. The dealer did a recall upgrade on the TCM and ECM, but it's still a no-go. I checked it and found the fuel system stays in open loop, preventing the oxygen and cat readines...

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car Vehicle Data

2018 Audi R8 Plus

VIN WUAKBAFX6J
Engine5.2 L / 10 cyl / GAS
Trans7-speed Automatic (Electronic)
DeliveryFuel Injection
EmissionsOBD-II Compliant
SymptomsFailed Readiness
OccursAlways
Open Help Request

car Vehicle Data

2018 Audi R8 Plus

VIN WUAKBAFX6J
Engine5.2 L / 10 cyl / GAS
Trans7-speed Automatic (Electronic)
DeliveryFuel Injection
EmissionsOBD-II Compliant
SymptomsFailed Readiness
OccursAlways