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VAG 16987Internal control module keep-alive memory (KAM) error
16987 is the VW Group 5-digit number VCDS (and older VAG-COM versions) shows for P0603. P0603 means “Internal control module keep-alive memory (KAM) 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.
- Not urgent
- SystemElectronics
- TypeGeneric (same on all makes)
- VCDS number16987
How urgent is it?
Usually not urgent; often emissions-related.
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
- Battery disconnected
- module supply
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.