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VAG 16474Fuel pressure regulator 1 control circuit
16474 is the VW Group 5-digit number VCDS (and older VAG-COM versions) shows for P0090. P0090 means “Fuel pressure regulator 1 control circuit”. It's a generic powertrain code (fuel, air metering and emission controls), so it means the same on every make, including VW, Škoda, Audi, SEAT and Cupra.
- Fix soon
- SystemFuel system
- TypeGeneric (same on all makes)
- VCDS number16474
How urgent is it?
Worth fixing soon; usually drivable meanwhile, but watch for symptoms.
Which system and module
Scanline files it under Fuel system. The first letter, P, means powertrain (engine, transmission, emissions).
Usually stored by the engine control unit (VCDS address 01, Engine).
What usually causes it
- Regulator valve
- wiring
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.