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VAG 16618Turbocharger/supercharger overboost condition
16618 is the VW Group 5-digit number VCDS (and older VAG-COM versions) shows for P0234. P0234 means “Turbocharger/supercharger overboost condition”. It's a generic powertrain code (fuel and air metering (injectors, turbo/supercharger)), so it means the same on every make, including VW, Škoda, Audi, SEAT and Cupra.
- Urgent
- SystemBoost
- TypeGeneric (same on all makes)
- VCDS number16618
How urgent is it?
Can affect safety or cause damage if ignored: get it checked soon.
Which system and module
Scanline files it under Boost. The first letter, P, means powertrain (engine, transmission, emissions).
Usually stored by the engine control unit (VCDS address 01, Engine).
What usually causes it
- Wastegate or vane control
- boost control valve
- sensor
Typical causes are a starting point, not a diagnosis of your car.
Related codes
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Open ScanlineScanline explains fault codes; it isn't a repair authority. This page explains what the code means; it can't tell you what is wrong with your car. Ross-Tech's wiki has their own notes on VW Group faults.