I have a 03 century 14l it has a code on the dash that I can't seem to find out what it means if anyone knows or could help please and thank you ENG Aux. IN/Out #1 Sht lo 128 155 04
You might see if it's listed in here: Engine Fault Codes (MID, PID, SID, FMI) FREIGHTLINER | Download Free PDF | Turbocharger | Anti Lock Braking System