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A3 8v - 1.4TSFI (VCDS error codes) - Gear selector & Boost

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July 9, 2025Jul 9

Hi All,

Recently bought my A3 8v 1.4 TSFI, decided to add some adaptations from my VCDS as I did the same with my A6.

Anyways, long story short.... I'm getting the infamous message on my dashboard "Vehicle electronics fault. Shift to P before leaving vehicle. Please contact workshop". So when I decided to add a few adaptions through VCDS, I obviously ran a full scan on the car and it came back with the 2 error listed in the pictures.

Was just wondering, how big of a problem is the (P0238 - Boost Sensor) code? I've ordered a new one and it's on the way. Regarding the Selector lever that's going to be looked at this Friday at my local VAG specialist mechanic as I know it seems to be a common fault but I'm hoping not too costly.

Edited July 9, 2025Jul 9 by Sunnyp9

July 9, 2025Jul 9

Author

Just to add, i’ve also been experience an increase in fuel consumption. I’m guessing this is down to the boost sensor fault or wiring issue!

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A3 8v - 1.4TSFI (VCDS error codes) - Gear selector & Boost

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engine

Help darnest thing new engine falters and doesn't have power

Gearbox service

Servicing

A6 c5 allroad seats

Audi S6 track car build

A1 A/C blocked

Would You Add Bluetooth to a Classic Audi?

Door hinge replacement

No sound, recommendations for a repair service.

Having problems working out my fuel tank capacity -

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Having trouble with charging at public charge points.

Adblue fault no restart after 650miles, Error codes P20BC,P20E8

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