Oxygen Sensor (BEW) (BHW) (1K0998262N) 

Oxygen Sensor (fits North American, A4 BEW) also known as lambda sensor

Original equipment part number: 06A906262BK

This is the O2 sensor, also known as lambda sensor, for A4 chassis cars (edc-16 BEW).This screws in place of the original sensor at the threaded bung in the exhaust pipe before the catalytic converter, and plugs into the factory wiring harness toward the rear of the car. If you are experiencing rough idle and misfires under load, or have a code in the engine controller that indicates a bad oxygen sensor, this could be the part you need.

One example of a code that might indicate replacing the lambda sensor:
16515 Oxygen (Lambda) sensor P0131

 16515 - Oxygen (Lambda) Sensor B1 S1 P0131 - 000 - Signal too Low 

This is not for early European edc-15 PD cars, only the EDC16 versions, as listed below:

Product Fits:

Volkswagen

• 2004-2006 Mk4 Golf TDI with BEW engine Code
• 2004-2005.5 MK4 Jetta TDI with BEW engine Code
• 2004 - 2005 Mk4 Jetta Wagon TDI with BEW engine Code
• 2004-2006 Mk4 New Beetle TDI with BEW engine Code

• 2004 2005 B5.5 Passat with BHW Engine Code