Hello Kevin. Sorry you're having trouble with your Dodge Ram's smog check. No documentation may sway your smog technician's decision to not test your diesel truck with incomplete monitors. You can still try however, and rather than using the SmogTips page which discusses number of
incomplete emission monitors allowed for diesel vehicles, we'd recommend going straight to the source. Follow the link below to download California's Smog Check Reference Guide (updated as of Jan 2018).
/pdf/Smog_Check_OBD_Reference_Full_Version.pdf
See page seven (7) which explains the number of allowed monitors for diesel and gas engines. See if this will sway your smog technicians mind. If not, seek inspection from another facility or the state's smog check referee's office; which you may contact by calling (800) 622-7733.
This is our suggestion only if there is no underlying issue or special instruction for your Dodge Ram diesel truck which the smog check machine is prompting. In other words, if the technician is hooking up your truck to the OIS-DAD emission test unit and the test tool is advising all monitors need to be ready, then there may very well be a special circumstance specifically for your vehicle which the BAR has required.
