P164BOil pressure switch malfunction (high-pressure stage)

• Volkswagen group code · Engine
• Turns on the check-engine light

How the car detects it

The switch that watches the higher oil-pressure stage (blue housing on many engines) reports a fault. Check the real oil pressure before replacing the switch.

What you may notice

• Check-engine light
• Oil pressure warning on some cars

Likely causes

• PossibleFaulty oil pressure switch
• PossibleGenuinely low oil pressure
• RareWiring

Sources

• static.nhtsa.gov › SB-10072894-0699.pdf · official document
• wiki.ross-tech.com › 005707

Backed by an official manufacturer document.

From Obdaryn's Volkswagen group pack, exactly as the app shows it, with the public sources above. Guidance only; confirm with a workshop.