Action in service

Consequential fault, rectify faults relating to the following components or functions:

• Mixture control

• Fuel system
• Variable camshaft timing control
• Tank ventilation
• Ignition
• Injection system
• Crankshaft sensor
• Camshaft sensor
• Electromotive throttle actuator
• Hot-film air mass meter

Check exhaust system in the area of the oxygen sensor before catalytic converter for leaks.

Check air intake for tightness.

Check crankcase ventilation.

Check lines and plug connections between the following components:

• DME
• Oxygen sensor before catalytic converter
• Oxygen sensor after catalytic converter

Replace oxygen sensor before catalytic converter.

Renew oxygen sensor after catalytic converter.