2013 Dodge Durango Owner's Manual - Page 610

608 MAINTAINING YOUR VEHICLE the SELECT button to turn off the message. If the Normally, the OBD II system will be ready. The OBD II problem continues, the message will appear the next time system may not be ready if your vehicle was recently serviced, recently had a dead battery or a battery replacethe vehicle is started. ment. If the OBD II system should be determined not A loose, improperly installed, or damaged fuel filler cap ready for the I/M test, your vehicle may fail the test. may also turn on the Malfunction Indicator Light (MIL). Your vehicle has a simple ignition key-actuated test, EMISSIONS INSPECTION AND MAINTENANCE which you can use prior to going to the test station. To PROGRAMS check if your vehicle's OBD II system is ready, you must In some localities, it may be a legal requirement to pass do the following: an inspection of your vehicle's emissions control system. 1. Turn the ignition switch to the ON position, but do not Failure to pass could prevent vehicle registration. crank or start the engine. For states that require an Inspection and Mainte- 2. If you crank or start the engine, you will have to start nance (I/M), this check verifies the "Malfunction this test over. Indicator Light (MIL)" is functioning and is not on when the engine is running, and that the OBD II 3. As soon as you turn the ignition switch to the ON position, you will see the MIL symbol come on as part system is ready for testing. of a normal bulb check.