2000 A4 1.8T trouble code

The check engine light came on yesterday. Plugged in the code reader and it gave me "1128". Can anyone advise what is commonly replaced to correct this
problem?
Thanks,
Ken
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Also.....72K miles.
Ken

it
this
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size=2>...<BR>&gt;&gt; The check engine light came on yesterday. Plugged in the code reader and<BR>&gt; it<BR>&gt;&gt; gave me "1128". Can anyone advise what is commonly replaced to correct<BR>&gt; this<BR>&gt;&gt; problem?<BR>&gt;&gt;<BR>&gt;&gt; Thanks,<BR>&gt;&gt;<BR>&gt;&gt; Ken<BR></FONT></DIV> <DIV><FONT size=2></FONT>&nbsp;</DIV> <DIV><FONT size=2>This is what the Bentley manual has for my '03:</FONT></DIV> <DIV><FONT size=2></FONT>&nbsp;</DIV> <DIV> <TABLE class=TAB.PAGE style="BORDER-TOP-WIDTH: 1px; BORDER-LEFT-WIDTH: 1px; BORDER-LEFT-COLOR: black; BORDER-BOTTOM-WIDTH: 1px; BORDER-BOTTOM-COLOR: black; BORDER-TOP-COLOR: black; BORDER-COLLAPSE: collapse; BORDER-RIGHT-WIDTH: 1px; BORDER-RIGHT-COLOR: black" cellSpacing=0 cellPadding=5 summary=Seite border=1> <TBODY> <TR> <TD style="BORDER-TOP-STYLE: solid; BORDER-RIGHT-STYLE: solid; BORDER-LEFT-STYLE: solid; BORDER-BOTTOM-STYLE: solid" vAlign=top> <P align=center><FONT size=2>P1128&nbsp;</FONT></P></TD> <TD style="BORDER-TOP-STYLE: solid; BORDER-RIGHT-STYLE: solid; BORDER-LEFT-STYLE: solid; BORDER-BOTTOM-STYLE: solid" vAlign=top> <P align=center><FONT size=2>17536&nbsp;</FONT></P></TD> <TD style="BORDER-TOP-STYLE: solid; BORDER-RIGHT-STYLE: solid; BORDER-LEFT-STYLE: solid; BORDER-BOTTOM-STYLE: solid" vAlign=top> <P><FONT size=2>Bank1, mixture adaption (mult.) system too lean&nbsp;</FONT></P></TD> <TD style="BORDER-TOP-STYLE: none; BORDER-RIGHT-STYLE: solid; BORDER-LEFT-STYLE: solid; BORDER-BOTTOM-STYLE: solid" vAlign=top colSpan=2> <TABLE style="MARGIN-TOP: 5px; MARGIN-BOTTOM: 5px" border=0> <TBODY> <TR> <TD><FONT size=2>- Check exhaust system for </FONT><A name=hit1></A><FONT size=2>proper seal </FONT></TD></TR></TBODY></TABLE> <TABLE style="MARGIN-TOP: 5px; MARGIN-BOTTOM: 5px" border=0> <TBODY> <TR> <TD><FONT size=2>- Check pressure regulation valve of crankshaft housing ventilation </FONT></TD></TR></TBODY></TABLE> <TABLE style="MARGIN-TOP: 5px; MARGIN-BOTTOM: 5px" border=0> <TBODY> <TR> <TD><FONT size=2>- Test Oxygen Sensor (O2S) before Three Way Catalytic Converter (TWC)</FONT></TD></TR></TBODY></TABLE> <TABLE style="MARGIN-TOP: 5px; MARGIN-BOTTOM: 5px" border=0> <TBODY> <TR> <TD><FONT size=2>- Test Oxygen Sensor (O2S) after Three Way Catalytic Converter (TWC)</FONT></TD></TR></TBODY></TABLE> <TABLE style="MARGIN-TOP: 5px; MARGIN-BOTTOM: 5px" border=0> <TBODY> <TR> <TD><FONT size=2>- Check fuel injectors</FONT><FONT size=2> </FONT></TD></TR></TBODY></TABLE></TD></TR></TBODY></TABLE></DIV> <DIV>&nbsp;</DIV> <DIV>--Art</DIV></BODY></HTML>
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Thanks, Art. I'm thinking O2 sensor. Probably bite the bullet and go for the upstream one unless someone can advise me otherwise.
Regards,
Ken
size=2>...<BR>&gt;&gt; The check engine light came on yesterday. Plugged in the code reader and<BR>&gt; it<BR>&gt;&gt; gave me "1128". Can anyone advise what is commonly replaced to correct<BR>&gt; this<BR>&gt;&gt; problem?<BR>&gt;&gt;<BR>&gt;&gt; Thanks,<BR>&gt;&gt;<BR>&gt;&gt; Ken<BR></FONT></DIV> <DIV><FONT size=2></FONT>&nbsp;</DIV> <DIV><FONT size=2>This is what the Bentley manual has for my '03:</FONT></DIV> <DIV><FONT size=2></FONT>&nbsp;</DIV> <DIV> <TABLE class=TAB.PAGE style="BORDER-TOP-WIDTH: 1px; BORDER-LEFT-WIDTH: 1px; BORDER-LEFT-COLOR: black; BORDER-BOTTOM-WIDTH: 1px; BORDER-BOTTOM-COLOR: black; BORDER-TOP-COLOR: black; BORDER-COLLAPSE: collapse; BORDER-RIGHT-WIDTH: 1px; BORDER-RIGHT-COLOR: black" cellSpacing=0 cellPadding=5 summary=Seite border=1> <TBODY> <TR> <TD style="BORDER-TOP-STYLE: solid; BORDER-RIGHT-STYLE: solid; BORDER-LEFT-STYLE: solid; BORDER-BOTTOM-STYLE: solid" vAlign=top> <P align=center><FONT size=2>P1128&nbsp;</FONT></P></TD> <TD style="BORDER-TOP-STYLE: solid; BORDER-RIGHT-STYLE: solid; BORDER-LEFT-STYLE: solid; BORDER-BOTTOM-STYLE: solid" vAlign=top> <P align=center><FONT size=2>17536&nbsp;</FONT></P></TD> <TD style="BORDER-TOP-STYLE: solid; BORDER-RIGHT-STYLE: solid; BORDER-LEFT-STYLE: solid; BORDER-BOTTOM-STYLE: solid" vAlign=top> <P><FONT size=2>Bank1, mixture adaption (mult.) system too lean&nbsp;</FONT></P></TD> <TD style="BORDER-TOP-STYLE: none; BORDER-RIGHT-STYLE: solid; BORDER-LEFT-STYLE: solid; BORDER-BOTTOM-STYLE: solid" vAlign=top colSpan=2> <TABLE style="MARGIN-TOP: 5px; MARGIN-BOTTOM: 5px" border=0> <TBODY> <TR> <TD><FONT size=2>- Check exhaust system for </FONT><A name=hit1></A><FONT size=2>proper seal </FONT></TD></TR></TBODY></TABLE> <TABLE style="MARGIN-TOP: 5px; MARGIN-BOTTOM: 5px" border=0> <TBODY> <TR> <TD><FONT size=2>- Check pressure regulation valve of crankshaft housing ventilation </FONT></TD></TR></TBODY></TABLE> <TABLE style="MARGIN-TOP: 5px; MARGIN-BOTTOM: 5px" border=0> <TBODY> <TR> <TD><FONT size=2>- Test Oxygen Sensor (O2S) before Three Way Catalytic Converter (TWC)</FONT></TD></TR></TBODY></TABLE> <TABLE style="MARGIN-TOP: 5px; MARGIN-BOTTOM: 5px" border=0> <TBODY> <TR> <TD><FONT size=2>- Test Oxygen Sensor (O2S) after Three Way Catalytic Converter (TWC)</FONT></TD></TR></TBODY></TABLE> <TABLE style="MARGIN-TOP: 5px; MARGIN-BOTTOM: 5px" border=0> <TBODY> <TR> <TD><FONT size=2>- Check fuel injectors</FONT><FONT size=2> </FONT></TD></TR></TBODY></TABLE></TD></TR></TBODY></TABLE></DIV> <DIV>&nbsp;</DIV> <DIV>--Art</DIV></BLOCKQUOTE></BODY></HTML>
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>> The check engine light came on yesterday. Plugged in the code reader and > it >> gave me "1128". Can anyone advise what is commonly replaced to correct > this >> problem? >> >> Thanks, >> >> Ken
This is what the Bentley manual has for my '03:
P1128 17536 Bank1, mixture adaption (mult.) system too lean - Check exhaust system for proper seal - Check pressure regulation valve of crankshaft housing ventilation - Test Oxygen Sensor (O2S) before Three Way Catalytic Converter (TWC) - Test Oxygen Sensor (O2S) after Three Way Catalytic Converter (TWC) - Check fuel injectors
--Art
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I get the impression that oxygen sensors are oxygen sensors. That means that other manuals I have which provide such information likely are similar for Audi. I'll give that a shot this weekend and see how it plays out.
Thanks again, Art!
Ken

correct
Converter
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