Checking oil pressure and oil pressure switch (1-pin oil pressure switch) — VW

🧭 Before you start

Fits: VW Golf V / Jetta (1K, 2003–2009)

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• Mechanical damage, e.g. to bearings, could also be the cause for oil pressure being too low.

🔧 Engine codes this applies to

📋 Procedure

1. Remove noise insulation General body repairs, exterior50Noise insulation
2. Remove oil pressure switch F1 and screw it into tester.
3. Screw tester into oil filter bracket in place of oil pressure switch.
4. Connect brown wire of tester to earth (-).
5. Connect voltage testerV.A.G 1527 B to battery positive (+) and oil pressure switch using cables from auxiliary measuring setV.A.G 1594C.

6. If the LED lights up, renew 1.4 bar oil pressure switch F1.
7. Start engine and increase speed:
8. Increase engine speed further.
9. Check strainer in oil suction pipe for contamination/soiling . [Note: Mechanical damage, e.g. to bearings, could also be the cause for oil pressure being too low.]
10. Renew balancer shaft gear assembly with oil pump .
11. Check oil channels.
12. If necessary, renew oil filter bracket with pressure relief valve.

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