What usually causes P0602?

Incomplete or failed software update.

P0602Control module programming error

P0602 means “Control module programming error”. It's a generic powertrain code (control module and outputs), so it means the same on every make, including VW, Škoda, Audi, SEAT and Cupra.

Urgent
SystemElectronics
TypeGeneric (same on all makes)
VCDS number16986

How urgent is it?

Can affect safety or cause damage if ignored: get it checked soon.

Which system and module

Scanline files it under Electronics. The first letter, P, means powertrain (engine, transmission, emissions).

Usually stored by the engine control unit (VCDS address 01, Engine).

What usually causes it

Incomplete or failed software update

Typical causes are a starting point, not a diagnosis of your car.

Related codes

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Scanline 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.