From Ross-Tech Wiki
16815/P0431/001073 - Warm Up Catalyst; Bank 2: Efficiency Below Threshold
- Warm Up Catalyst Bank 2 faulty
- Check Warm Up Catalyst Bank 2
- Replace Warm Up Catalyst Bank 2
- When found on the following, there may be a firmware update:
- 2000 - 2001 Passat with ATQ engine, see TSB 01-07-07 (TPI 2010372)
- 2000 - 2001 A4 or A6 with ATQ engine, see TSB 26-08-07 (TPI 2013086)
- 2001 Allroad with APB engine, see TSB 01-08-20 (TPI 2005579)
- 2001 A4 or A6 with APB engine, see TSB 01-08-34 (TPI 2012357)
Unless otherwise noted, all content on this site is Copyright © 2000-2010 by Ross-Tech LLC. All rights reserved.
"VCDS" is a Registered Trademark of Ross-Tech, LLC.
Ross-Tech is not affiliated with the Volkswagen Group in any way.