Engine Oil Pressure: Testing and Inspection

Oil pressure and oil pressure switch, checking
Special tools and equipment





- VAG 1342 Oil pressure tester
- VAG 1527 B Diode test lamp
- VAG 1594 A Adapter set

Test sequence

Note: For functional check and servicing the optical and acoustic oil pressure warning:





- Remove oil pressure switch (F1) and screw into tester.
- Screw tester into oil pan in place of oil pressure switch.
- Connect brown wire of tester to Ground (-).
- Connect diode test lamp VAG 1527 using auxiliary cables from VAG 1594 to battery positive (+) and oil pressure switch.
- Start engine and increase speed slowly. At 1.2-1.6 bar LED must light up, otherwise replace oil pressure switch.
- Increase engine speed further. At 2000 rpm and at an oil temperature of 80° C oil pressure should be at least 2.0 bar.