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Old 09-08-2008, 10:27 AM   #2
Lil bastard
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Join Date: Feb 2008
Location: Du Monde
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The Motronic 7.2 DME Diagnostics manual lists a number of possible causes for P1411 - Secondary air injection system, bank 2.
  • A bad secondary air injection pump

    restricted air supply lines

    electronic changeover valve not functioning

    air changeover valve not functioning

    vacuum leaks

    wiring harness


    DME control module

It also calls for a testing procedure using the PIWIS or PST2 tester and calls for specific air temperature and air mass values.

I suspect that since it's isolated to Bank 2, it's probably vacuum leaks or the MAF, at least that's where I'd start. The other causes call for replacement of components and need the tester to isolate them.
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