Checking engine oil pressure: Audi A3 (CHHB, CHHC, CJEB, CJED, …)
Step-by-step checking engine oil pressure for the Audi A3: 17 steps. What to remove, in what order, and what to check after.
Workshop procedure for AUDI — the exact step sequence and torque figures, straight from real workshop data.
🧭 Before you start
Fits: Audi A3 (8V, 2012–2020); platform code 85
🔧 Engine codes this applies to
📋 Procedure
- Vehicles with auxiliary radiator (left-side): Remove filler neck (2) for washer fluid reservoir Electrical system92Windscreen washer system; Removing and installing washer fluid reservoir.
- Unplug electrical connector (arrow) at oil pressure switch for reduced oil pressure F378.
- Place a cloth under bracket for ancillaries to catch escaping engine oil.
- Unscrew oil pressure switch for reduced oil pressure(1).
- Screw oil pressure testerV.A.G 1342 into oil filter bracket in place of oil pressure switch.
- Screw oil pressure switch for reduced oil pressure F378 into oil pressure tester and plug in electrical connector.
- Connect oil pressure tester to earth.
- Start engine and check oil pressure at specified engine speeds.
- Switch off engine.
- Remove noise insulation General body repairs, exterior66Noise insulation; Exploded view - noise insulation.
- Unplug connector (1) from valve for oil pressure control N428. Unfasten wire and route downwards so that it does not come into contact with belt drive. When connector is unplugged, oil pump operates in the higher pressure stage.
- Start engine and check oil pressure at specified engine speeds.
- Install oil pressure switch.
- Plug in connector (1) at valve for oil pressure control N428. Route wire carefully.
- Install noise insulation General body repairs, exterior66Noise insulation; Exploded view - noise insulation.
- Interrogate event memory of engine control unit and erase all entries.
- Install filler neck for washer fluid reservoir Electrical system92Windscreen washer system; Exploded view - windscreen washer system.
Other AUDI procedures
- Removing and installing pistons
- Removing and installing toothed belt for coolant pump – VW
- Checking fuel system pressurisation pump G6 - vehicles with 4-cyl. engine
- Removing and installing activated charcoal filter - NAR vehicles
- Separating engine and gearbox - vehicles with dual clutch gearbox 0D9
- Removing and installing toothed belt – Audi · 56 torque figures
- Removing engine – Audi A8 D3 · 41 torque figures
- Removing camshaft timing chain from camshafts – Audi A6/A7 C7 · 38 torque figures
- Installing engine – Audi A8 D4 · 36 torque figures
- Removing and installing camshaft timing chain · 29 torque figures
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.