Check engine light, sensors (includes O2 or oxygen sensor), emission control devices (includes EGR), engine computer, engine computer, fuel cap, fuel gauge/sender, fuel injection system, fuel pump, fuel leaks, stalling or hesitation.
What Owners Say
"Got a warning light and took it to a dealer to replace the EGR"Pat P., NV (2012 Ram 2500 SLT 6.7-L 6 Cyl diesel)
"Egr has been fine. Truck has driven more miles with the check engine light on, than off. Mostly due to the very small tubes that Connect the exhaust sensors to the exhaust system from the turbo back. The tubes clog very quickly after service, including replacement. Have had sensors and tubes replaced numerous times. Not a single problem with the engine or transmission in 212,000 mi. Just the emissions. Particulate filter is regularly causing issues"Russ S., FL (2012 Ram 2500 Laramie 6.7-L 6 Cyl diesel)
"The design of the 2010-2012 Ram Cummins 6.7L engine uses a very large amount of EGR to achieve emissions limits w/o use of DEF/SCR. This creates a soot problem in the EGR system and intake manifold, which caused a malfunction. The malfunction symptoms were: Loss of fuel efficiency, constant DPF regens, engine malfunction codes and engine malfunction light, and very rough running. To remedy the malfunction the EGR system had to be disassembled and soaked in cleaner solution to loosen and rem"Anonymous, TX (2012 Ram 2500 Laramie 6.7-L 6 Cyl diesel)
"Electric sensors for the exhaust system are regularly causing issues. Carbon buildup is the most common. The Chrysler designed emissions are not up to task. Compare to bigger trucks with these same sensors which rarely have issues"Russ S., FL (2012 Ram 2500 Laramie 6.7-L 6 Cyl diesel)
"Received a check engine light. No significant performance problems noted. Auto parts store OBD tester indicated O2 sensor failure left & right banks. Took the vehicle to the dealership thinking that this would be covered by the emissions warranty. They said it was but that the computer diagnosis indicated excessive idling and low speed operation as the reason for the coked up sensors. The told me they had a fix for the problem (evidently Cummins has had this problem before) in the form of a new control box that WASN'T covered by warranty. I asked why it wasn't since it was a part of the emissions control. They couldn't explain that and so I refused the installation of the improved control box. When the after-service survey came by e-mail, I told The RAM folks exactly what had transpired and that I wasn't happy at all with the dealership and the non-coverage of the improved part. A few days later the service manager called me and stated that As a gesture of goodwill the dealership was going to install the Improved control box gratis. They did so, and I haven't had a problem with the CEL since them."John S., TX (2012 Ram 2500 Laramie 6.7-L 6 Cyl diesel)