What usually causes P0018?

Timing chain or belt stretched or jumped a tooth, cam adjuster, crank or cam sensor.

P0018Crankshaft/camshaft position correlation (bank 2 sensor A)

P0018 means “Crankshaft/camshaft position correlation (bank 2 sensor A)”. 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.

Urgent
SystemValve timing
TypeGeneric (same on all makes)
VCDS number16402

How urgent is it?

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

Which system and module

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

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

What usually causes it

Timing chain or belt stretched or jumped a tooth
cam adjuster
crank or cam sensor

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.