P0603 Internal Control Module KAM Error
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Junior User
Joined: Jan 2007
Posts: 81
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From: Edmonds , WA
P0603 Internal Control Module KAM Error
Pulled this code today . 2/3 of the way home from work , truck starts running funny , almost seemed fuel starved . Pulled over and pulled<TABLE border=0 cellSpacing=0 cellPadding=0 width="80%" align=center><TBODY><TR style="HEIGHT: 12.75pt" height=17><TD style="HEIGHT: 12.75pt" height=17>P0603</TD><TD>Internal Control Module KAM Error</TD></TR></TBODY></TABLE>
This one <TABLE border=0 cellSpacing=0 cellPadding=0 width="80%" align=center><TBODY><TR style="HEIGHT: 12.75pt" height=17><TD style="HEIGHT: 12.75pt" height=17>P0470</TD><TD>Exhaust Back Pressure Sensor Circuit Error</TD></TR></TBODY></TABLE><TABLE border=0 cellSpacing=0 cellPadding=0 width="80%" align=center><TBODY><TR style="HEIGHT: 12.75pt" height=17><TD style="HEIGHT: 12.75pt" height=17>P0478</TD><TD>Exhaust Pressure Control Valve High Input</TD></TR></TBODY></TABLE>
this happend about three weeks ago too, it died restarted , died restarted, got it home and it ran fine the next day until today . I can hear a clicking sound too. Not sure where it's comeing from but it sounds like in the dash but Im probly wrong. Any ideas ?
This one <TABLE border=0 cellSpacing=0 cellPadding=0 width="80%" align=center><TBODY><TR style="HEIGHT: 12.75pt" height=17><TD style="HEIGHT: 12.75pt" height=17>P0470</TD><TD>Exhaust Back Pressure Sensor Circuit Error</TD></TR></TBODY></TABLE><TABLE border=0 cellSpacing=0 cellPadding=0 width="80%" align=center><TBODY><TR style="HEIGHT: 12.75pt" height=17><TD style="HEIGHT: 12.75pt" height=17>P0478</TD><TD>Exhaust Pressure Control Valve High Input</TD></TR></TBODY></TABLE>
this happend about three weeks ago too, it died restarted , died restarted, got it home and it ran fine the next day until today . I can hear a clicking sound too. Not sure where it's comeing from but it sounds like in the dash but Im probly wrong. Any ideas ?
Cargo Master
Joined: May 2010
Posts: 3,047
Likes: 10
From: Snohomish, WA
Clicking usually leads to low power. With it doing what you listed, I would be more inclined to say you are having a ground issue. Have you checked all the battery connections and the major grounds from the batteries to the frame and body?
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