Checking oil pressure switch: VW Golf IV / Bora (AQN, AQP, AUE, AYT, …)
Step-by-step checking oil pressure switch for the VW Golf IV / Bora: 10 steps. What to remove, in what order, and what to check after.
Workshop procedure for VW — the exact step sequence and torque figures, straight from real workshop data.
🧭 Before you start
Fits: VW Golf IV / Bora (1J)
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- Observe installation position of adapter: the conical connecting piece of the adapter must be screwed into the pressure hose of the tester.
- Connect voltage testerV.A.G 1527B to battery positive (+) and oil pressure switch using cables from auxiliary measuring setV.A.G 1594C. LED must not light up.
- Start engine and run at idling speed, at 1.2...1.6 bar the LED must light up, otherwise renew oil pressure switch F1.
🔧 Engine codes this applies to
📋 Procedure
- Remove front, left and right insulation trays: General body repairs, exterior50Body front; Assembly overview - Noise insulation (petrol engine)
- Pull connectors off thermal switch and radiator fan.
- Remove front bumper cover: General body repairs, exterior63Front bumper
- Bring lock carrier into service position General body repairs, exterior50Body, front; Lock carrier - service position.
- Remove oil pressure switch F1 and screw into oil pressure testerV.A.G 1342.
- Screw oil pressure testerV.A.G 1342 with adapterV.A.G 1342/14 into oil filter housing in place of oil pressure switch. [Note: Observe installation position of adapter: the conical connecting piece of the adapter must be screwed into the pressure hose of the tester.]
- Connect brown wire of tester to earth (-).
- Connect voltage testerV.A.G 1527B to battery positive (+) and oil pressure switch using cables from auxiliary measuring setV.A.G 1594C. LED must not light up.
- Renew oil pressure switch F1.
- Start engine and run at idling speed, at 1.2...1.6 bar the LED must light up, otherwise renew oil pressure switch F1.
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Who makes these pages, and how
TorqFix was built by a mechanic — after a 2,700 km drive with five roadside repairs that no diagnostic tool could explain.
The figures on this page come from manufacturer workshop documentation and are shown as they are. The page is assembled automatically from that data — it is not written by an AI. The AI works in the chat, where it answers for your specific car. It writes nothing here.
Variants of the same model differ. Cross-check torque against the factory manual for your engine before final tightening.
Seen a figure that does not match your manual? Write to us — we correct it and note when. support@torqfix.com
The story behind TorqFix →Workshop data on this page last updated 20 Sep 2026.