Checking oil pressure and oil pressure switch, engine codes CCZA, CCZB, CDAA, CDAB — VW

🧭 Before you start

Fits: VW Sharan II / SEAT Alhambra (7N, 2010–), VW Golf Cabriolet (517, 2011–2016), VW Passat B7 saloon (362, 2010–2014), VW Passat B7 Variant (365, 2010–2014), VW CC (358, 2012–2017)

• Renewed: oil pump, oil pressure switch

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• During the first 1000 km the oil pressure could be 3.0 to 4.0 bar at 2000 rpm.
• Mechanical damage, e.g. to bearings, could also be the cause for oil pressure being too low.
• Start engine. At 0.55…0.85 bar, the LED must light up; otherwise renew oil pressure switch.
• Start engine and increase engine speed. At 2.15…2.95 bar, the LED must light up, otherwise renew oil pressure switch.

🔧 Engine codes this applies to

📐 67 workshop diagrams for CCZA

Real factory drawings for this job — timing marks, bolt locations and routing. Locked in the free view.

📋 Procedure

1. Separate electrical connector (2) on oil pressure switch for reduced oil pressure F378 (brown).
2. Unscrew oil pressure switch for reduced oil pressure F378(1).
3. Screw oil pressure tester V.A.G 1342 into oil filter bracket in place of oil pressure switch.
4. Screw oil pressure switch for reduced oil pressure F378 in oil pressure tester V.A.G 1342.
5. Start engine. [Note: During the first 1000 km the oil pressure could be 3.0 to 4.0 bar at 2000 rpm.]

6. Check strainer in oil suction pipe for contamination/soiling (see the separate procedure).
7. Check valve for oil pressure control N428 with vehicle diagnostic tester. [Note: Mechanical damage, e.g. to bearings, could also be the cause for oil pressure being too low.]
8. Renew oil pump (see the separate procedure).
9. Stop engine.
10. Connect brown wire of tester to earth (-).
11. Connect voltage tester V.A.G 1527B to battery positive (+) and oil pressure switch for reduced oil pressure F378 (brown) using cables from auxiliary test set V.A.G 1594C.
12. If LED lights up, replace oil pressure switch for reduced oil pressure F378.
13. Start engine. At 0.55…0.85 bar, the LED must light up; otherwise renew oil pressure switch.
14. Stop engine.
15. Connect voltage tester V.A.G 1527B to battery positive (+) and oil pressure switch F1 (blue) using cables from auxiliary measuring set V.A.G 1594C.
16. If LED lights up, replace pressure switch F1.
17. Start engine and increase engine speed. At 2.15…2.95 bar, the LED must light up, otherwise renew oil pressure switch.

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