Apr 05, 2015 · I have a 2012 freightliner m2106. wont crank over pulled codes on dash, fault code 1 no trans spn 639,fault 2 eng o spn 627, fault 3 eng o spn 191, fault 4 eng o 84 where can i find the fault code dir. burkeftm. bh is a bulkhead module code,push the button that scrolls to your trip odometer until the led reads diag then push and hold that button and it should read fault and how many faults.push button again to read codes should read bh33 , {push again] will give a two digit code,push again will give another two digit code.if you get me the.