Mister Bally

I'm getting codes P1128 and P1130 (bank 1 too lean and Bank 2 too lean) using Ross Tech interface and software. This is on my 2004 with 4.2L engine. The Berntley manual skips codes between P700 and P2000 so I have no clue where to look for the cause. Car runs perfect but the CEL is annoying. Anyone have a better list of codes?

Thanks in advance.

jakematic

This WIKI from Ross-Tech is in the range you are asking about:
http://wiki.ross-tech.com/wiki/index...P1640%2F005696

P1130: http://wiki.ross-tech.com/wiki/index.php/17538/P1130
Add'l info: http://wiki.ross-tech.com/wiki/index.php/Fuel_Trim_Info

Bentley has an online list, but no additional info: http://www.bentleypublishers.com/tec....dtc.table.htm

Massive amounts of measuring block and diagnostics info:
http://www.audi-portal.com/en/diagnostic/ecu.html

-Jake

MP4.2+6.0

when I see lean codes, my instincts from my C5 4.2 are to look at the vacuum lines for leaks. If you have never replaced vacuum hose and have the braided cover junk (a constant as you know on VW's and Audi's), my practice is just to replace it all and save the repeated leaks. Tends to give out after 3-4 years where heat soaked (top and back of motor), and a bit more gradually in other areas.

If not in the vacuum lines, look more at the air injection pump--both the plumbing and the motor.