2015 Dodge Challenger Owner Manual SRT - Page 476

474 MAINTAINING YOUR VEHICLE Loose Fuel Filler Cap EMISSIONS INSPECTION AND MAINTENANCE If the vehicle diagnostic system determines that the fuel PROGRAMS filler cap is loose, improperly installed, or damaged, a In some localities, it may be a legal requirement to pass "gASCAP" message will display in the odometer or a an inspection of your vehicle's emissions control system. "Check Gascap" message will display in the Driver Failure to pass could prevent vehicle registration. Information Display (DID). If this occurs, tighten the fuel For states that require an Inspection and Maintefiller cap properly and press the Trip Odometer button to nance (I/M), this check verifies the "Malfunction turn off the message. If the problem continues, the Indicator Light (MIL)" is functioning and is not message will appear the next time the vehicle is started. on when the engine is running, and that the OBD II A loose, improperly installed, or damaged fuel filler cap system is ready for testing. may also turn on the MIL. Normally, the OBD II system will be ready. The OBD II system may not be ready if your vehicle was recently serviced, recently had a dead battery or a battery replacement. If the OBD II system should be determined not ready for the I/M test, your vehicle may fail the test.