The spec I have from AD:
Passat 1.9D TDI PD 2001-05
Engine code: Hydraulic Tensioner - AVB, AVF, AWX
Replacement Interval Guide:
<MY 2003:
Timing belt - Renew: Every 60,000 miles or 48 months.
Timing belt tensioner - Renew: Every 60,000 miles or 48 months.
MY 2004>:
Timing belt - Renew: Every 80,000 miles or 48 months.
Timing belt tensioner - Renew: Every 160,000 miles or 96 months.
Timing Belts App