craigc51 Report post Posted August 27, 2019 Just installed a new scan gauge on my 2004 5.9 Cummins diesel . While setting up the gauges I had a code which is 2003 15 127. I’ve cleared it 10 times now and it keeps coming back on every time I start the engine . The engine light never comes on . I can’t find anything online I even called scan gauge and they said they didn’t know anything about a 2003 code . Any help would be appreciated or should I just ignore it . Share this post Link to post Share on other sites
huffypuff Report post Posted August 27, 2019 If your getting odd codes that don't relate maybe you have the right connector but the wrong scan gauge for your year, make and model of engine Share this post Link to post Share on other sites
craigc51 Report post Posted August 27, 2019 I will look into that tomorrow thanks Share this post Link to post Share on other sites
