Checking engine oil pressure — VW

🧭 Before you start

Fits: platform codes AU1, BX5

🔧 Engine codes this applies to

📋 Procedure

1. After new components have been installed (engine/short engine, cylinder head or turbocharger), the oil pressure control must be set to max. pressure for approx. 1000 km. This will compensate for the increased friction during run-in of new components, and a better transport of particles produced during run-in is guaranteed. To do this, connect vehicle diagnostic tester, switch on ignition, and select the following menu options:
2. Disconnect connector (arrow) from oil pressure switch for reduced oil pressure F378.
3. Place a cloth underneath ancillary bracket to catch any escaping engine oil.
4. Unscrew oil pressure switch for reduced oil pressure(1).
5. Screw oil pressure testerV.A.G 1342 into oil filter bracket in place of oil pressure switch.

6. Screw oil pressure switch for reduced oil pressure F378 into oil pressure tester, and connect connector.
7. Connect oil pressure tester to earth.
8. Start engine, and check oil pressure at the specified engine speed levels.
9. Stop engine.
10. Remove noise insulation General body repairs, exterior66Noise insulation; Assembly overview - noise insulation.
11. Pull connector (1) off valve for oil pressure control N428. Unclip cable and route it towards bottom to prevent it from being trapped in the belt drive. With disconnected connector the oil pump operates at high pressure level.
12. Start engine, and check oil pressure at the specified engine speed levels.
13. Install oil pressure switch.
14. Connect connector (1) to valve for oil pressure control N428. Route cable carefully.
15. Install noise insulation General body repairs, exterior66Noise insulation; Assembly overview - noise insulation.
16. Read engine control unit event memory, and clear all entries.

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