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VAG 17104Output speed sensor circuit
17104 is the VW Group 5-digit number VCDS (and older VAG-COM versions) shows for P0720. P0720 means “Output speed sensor circuit”. It's a generic powertrain code (transmission), so it means the same on every make, including VW, Škoda, Audi, SEAT and Cupra.
- Fix soon
- SystemTransmission
- TypeGeneric (same on all makes)
- VCDS number17104
How urgent is it?
Worth fixing soon; usually drivable meanwhile, but watch for symptoms.
Which system and module
Scanline files it under Transmission. The first letter, P, means powertrain (engine, transmission, emissions).
Usually stored by the gearbox control unit (VCDS address 02, Transmission); the engine control unit often stores a copy.
What usually causes it
- Speed sensor
- wiring
- mechatronic unit
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.