ras32758 Posted December 12, 2015 Report Share Posted December 12, 2015 This may be my second post. We have a 1999 VNL 610. Cummins with auto shift. Performance was good then gradually off and on without any apparent reason would become bad as turbo would not engage all the time. I was in the right lane with the loaded trucks with flashing slowly crawling up the hills. Finally I was able to correlate the non specific "caution" light on the dash to the lack of boost and the light was most often on. Had a new sensor installed by TEI in Roanoke, Va. The mechanic was able to confirm in computer codes that boost sensor was bad. Don't know how much a failing sensor will degrade performance but when it has failed for good it basically derated the engine to keep from applying too much boost. No more flashers going up hill. Link to comment Share on other sites More sharing options...
rdickinson Posted December 12, 2015 Report Share Posted December 12, 2015 I'd need the code and how to get it. Link to comment Share on other sites More sharing options...
ras32758 Posted December 14, 2015 Report Share Posted December 14, 2015 Roger, if your reply was directrd to me I do not know what code he found. Nor have I seen anyone explain if the codes can be accessed without the computer set up this shop had. Link to comment Share on other sites More sharing options...
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