I had to replace the battery on my 2003 Passat (without temporary power thru the lighter) and shortly afterward the check engine light came on. I got a scan tool that indicated three fault codes shown below. Are these likely the result of the battery change and I can reset the faults or should I take the car into a shop to have them checked out? Thanks for your assistance.
16805 Warm up Catalyst Bank 1 Efficienct below threshold
18011 Internal Control Module: Failed Self-Test
00532 Airbag supply voltage