Emission Control Systems: Service Precautions
CAUTION
CAUTION: Your new Cummins 6.7L diesel meets EPA Heavy Duty Diesel Engine Emissions Standard (HDDE07) resulting in the lowest emitting diesel ever produced.
To achieve this standard, your Dodge Ram truck is equipped with state of the art engine and exhaust emissions systems. The engine and exhaust system work in an integrated manner which allows your exhaust system catalysts to trap and burn particulate matter pollutants.
Under very limited circumstances, your engine and exhaust system may not be able to create the conditions necessary to burn off trapped pollutants. If this situation should occur, the interior overhead message center will display a message warning you of this condition ("Catalyst Full See Owner Man"). By simply changing your driving style for as little as 40 minutes. you can change this condition and allow the trapped pollutants to be burned off.
If you do not change your driving style, the messages will continue. The engine control module will take action to protect your catalyst system from permanent damage.
Your Owners Manual provides a more detailed description of the driving styles which could create this condition as well as the modified driving style that will allow complete burning of the trapped pollutants.
In the event that the warning messages continue, the electronic engine control module will take action by significantly reducing performance to protect your exhaust catalyst system. A final message, " Check Engine" will require you to visit your dealer. Your dealer is equipped with the necessary information and equipment to alleviate the condition without damage.
To meet more stringent emissions standards, your new engine requires use of Ultra Low Sulfur Diesel Fuel and Low Ash Oil, API CJ-4. Also it is important to adhere to required fuel filter maintenance intervals including periodic drain of water when in cab warning is illuminated. Failure to do so could result in severe engine and exhaust system damage.