Motronic injection and ignition system (5-cyl. 4-valve) — Evaluating measured value blocks, display groups 30...33, 99 -Lambda control- — VW

🧭 Before you start

Fits: VW Passat B5 (3B)

🔧 Engine codes this applies to

📋 Procedure

1. Disappears after motorway drive or oil change
2. Checking injectors
3. Checking fuel pressure regulator and holding pressure .
4. Checking activated charcoal filter solenoid valve 1 , final control diagnosis
5. Check air mass meter

6. Checking Lambda probe heating
7. Check intake system for leaks
8. Rectify cause
9. Checking injection rate
10. Check air mass meter
11. Checking fuel pressure regulator and holding pressure .
12. Checking Lambda probe heating
13. Wait 30 seconds until the display has stabilised
14. Check intake system for leaks
15. Checking injection rate
16. Check Lambda learnt value in display group 32
17. Checking Lambda probe lines

Other VW procedures

• Checking signals from and to air conditioning system – VW AZX
• Checking engine speed sender – VW Passat B5 2.3 AZX
• Checking Lambda probe ageing of Lambda probe 1 before catalytic converter
• Checking Lambda probe ageing of Lambda probe after catalytic converter (adaptation)
• Checking signal from clutch pedal switch – VW Passat B5 2.3
• Removing engine · 41 torque figures
• Removing and installing camshaft – VW Golf Cabriolet · 47 torque figures
• Adjusting valve timing – VW Passat B5 · 83 torque figures
• Removing and installing camshafts – VW Passat B6 · 39 torque figures
• Removing and installing coolant pump · 53 torque figures