There are 8 owner-reported fuel system complaints for the 2015 Ram 2500in NHTSA's database. These are unverified consumer reports and may not reflect confirmed defects.
TL* THE CONTACT OWNS A 2015 RAM 2500. WHILE DRIVING 65 MPH, "DEF SYSTEM 75 MPH SPEED LIMIT WILL BE LIMITED TO 5 MPH" APPEARED ON THE INSTRUMENT PANEL. THE CONTACT DROVE THE VEHICLE TO WINNIE DODGE CHRYSLER JEEP RAM (LOCATED AT 125 TX-124, WINNIE, TX 77665, (409) 296-3500) WHERE IT WAS DIAGNOSED THAT THE DEF FUEL PUMP SYSTEM FAILED AND NEEDED TO BE REPLACED. THE VEHICLE WAS NOT REPAIRED BECAUSE PARTS WERE NOT AVAILABLE. THE MANUFACTURER WAS NOTIFIED OF THE FAILURE AND REFERRED THE CONTACT TO NHTSA. THE APPROXIMATE FAILURE MILEAGE WAS 80,000.
DEF GAUGE IS STUCK. I HAVE TRAVELED NEARLY 3,000 MILES AND STILL THE GAUGE HAS NOT MOVED. I WAS CHECKING ON-LINE AND SEEN WHERE THERE WAS A RECALL ON THIS PROBLEM WITH A PRIOR MODEL.
DEAL THROTTLE PEDAL WHEN MAKING FAST ACCELERATIONS DUE TO RAPID CHANGING TRAFFIC CONDITIONS IN CITY TRAFFIC. PRESSING THROTTLE, LETTING OFF AND THEN PRESSING THROTTLE AGAIN RESULTS IN NO THROTTLE RESPONSE FOR 1-2 SECONDS.
MY TRUCK HAS RAW BURNING DIESEL EXHAUST COMING IN THE AIR VENTS ON THE DASH THAT POISONED MY FAMILY FOR AN ENTIRE YEAR BEFORE WE WERE AWARE OF THE PROBLEM. YOU CAN SMELL THE SOLVENT/SPRAY PAINT TYPE SMELL 100 FOOT DIAMETER ON A CALM DAY. PARKED 99% SINCE MAY 5TH BECAUSE 1 DEALERSHIP SAYS ITS UNSAFE TO DRIVE AND THE OTHER REFUSES TO DOCUMENT THE PROBLEM. IT IS NOW BEING TOWED TO A THIRD DEALERSHIP. MY SON AND I HAD ELEVATED CARBON MONOXIDE LEVELS IN OUR BLOOD THE DAY THE RAM MECHANIC ADVISED US IT WAS DIESEL EXHAUST.THE SKIN ON MY FACE, ARMS,KNEES WAS BLISTERING AND FALLING OFF FOR SEVERAL MONTHS. I FIRST ASKED DOCTORS IN OCTOBER 2015 AND REMAINED IN THE DEFECTIVE TRUCK UNTIL MAY 2016. MY VISION WAS BLURRY WHEN DRIVING AND MY EYES WERE BURNING. WE THOUGHT IT WAS GLUE SMELL OR NEW CAR SMELL. MY 11 YEAR OLD SON WAS DIZZY, HAD HEADACHES, AND WOULD FALL ASLEEP QUICKLY EVERYDAY. HE COMPLAINED TO HIS SCHOOL AFTER WE SAT IN TRAFFIC EVERY MORNING. WE HAD BREATHING PROBLEMS AND TOXICOLOGIST AT UC DAVIS MEDICAL CENTER CONFIRMED AGGRAVATED SKIN DAMAGE FROM DIESEL EXHAUST. WHEN WE PARKED THE TRUCK ALL HEADACHES, DIZZINESS, SLEEPINESS, SKIN BLISTERS, BURNING EYES, COUGHING ATTACKS, AND CONFUSION WENT AWAY. SKIN IS NOW PERMANENTLY DAMAGED AND NO NEW SKIN SPOTS OR BLISTERING HAVE APPEARED SINCE PARKING THE TRUCK, BUT IT STILL FALLS OFF EVERY DAY. MY EYES ARE PERMANENTLY DAMAGED. THE FUTURE EFFECTS OF DIESEL CHEMICALS ARE UNKNOWN. MY TRUCK IS UNSAFE TO DRIVE MY SON TO SCHOOL 2 MILES BECAUSE WE SIT IN TRAFFIC AND THE CAB FILLS WITH FUMES. THE FUMES ALSO COME IN AT EVERY STOP SIGN OR STOP LIGHT. THE CARB SAID THE SOLVENT TYPE SMELL IS RAW DIESEL BURNING IN THE EXHAUST PIPE AND THIS SHOULD NOT BE HAPPENING,MY EXHAUST SHOULD HAVE NO SMELL AT ALL.CARB SAID THIS TYPE OF PROBLEM MAY NOT BE RECOGNIZABLE ON THE DIAGNOSTICS BEING PLUGGED IN TO THE TRUCK COMPUTER. PLEASE HELP! *TR
FUEL IS VENTING FROM THE VAPOR CANISTAR,THIS FUEL VAPOR CANISTAR IS LOCATED RIGHT NEXT TO THE FUEL FILL HOSE AND IS TYE-WRAP TO IT.DURING FUELING OF DIESEL PRODUCT THE FUEL TANK IS PRESSURIZED AND VAPOR FUMES COME FROM THIS VAPOR CANISTAR.THE DIESEL VAPOR IS NOT ALLOWED TO VENT INTO THE ATMOSPHERE SO IS SUPPOSE TO BE CONTAIN HERE AT THIS CANISTAR.ALSO DURING FUELING OF DIESEL PRODUCT THE TANK BECOMES PRESSURIZED AS FUEL IS OCCUPLING SPACE FORCES THE VAPOR UP THE CANISTAR WHAT IS HAPPENING I NOTICED IS THAT FUEL ALSO COMES OUT OF THE VAPOR CANISTAR AND RUNS DOWN THE OUTSIDE OF THE DIESEL FILL HOSE AND ON TO THE INSIDE OF THE LOWER BED BODY.NO FUEL OF ANY KIND MUST COME OUT OF ANY TRUCK,SUV,CAR DURING FUELING.IF YOU LOOK ON THE INTERNET YOU CAN FIND OTHER RAM 2500 OWNERS IN THE 2014 RAM MODEL YEAR EXPERIENCING THIS AS WELL.I HAVE NOTIFY RAM CUSTOMER SERVICE AND ASK THAT A RAM ENGINEER CONTACT ME OR SOMEONE FROM RAM THAT UNDERSTANDS THIS TRUCK,TO DATE NO ONE HAS CALLED ME AND THAT WAS 2 WEEKS AGO.
DIESEL EXHAUST SMELL IN CAB SOMETIMES VERY STRONG CAUSES HEADACHES DIZZINESS WHEN STOPPED AT STOPLIGHTS, SIGNS, IDLING OR MOVING SLOW. OPENING WINDOWS DOES NOT REALLY HELP UNLESS YOU ARE MOVING, CANNOT SIT AN IDLE AND STAY IN CAB VERY LONG. COOL OR COLD WEATHER SEEMS TO MAKE IT WORSE. HAVE HAD IT INTO THE DEALER TWICE FOR THE ISSUE BUT THEY CAN NEVER FIND IT. *TR
ON 6.7L CUMMINS DIESEL THERE CAN BE AN UNPREDICTABLY LONG ( UP TO 2 SECOND) DELAY BETWEEN WHEN THE ACCELERATOR IS PRESSED AND WHEN THE TRUCK ACTUALLY BEGINS TO ACCELERATE. THIS IS NOT TURBO LAG (WHICH MAY LIMIT THE AMOUNT OF POWER UNTIL THE TURBO SPOOLS UP). THIS IS NOT A STUMBLE. THIS IS AN ACTUAL DELAY IN THE COMPUTER APPLYING FUEL TO THE ENGINE. IT IS TOTAL DEAD TIME AS IF THE ACCELERATOR WAS NOT PRESSED AT ALL. IT HAPPENS UNDER THE WORST OF CONDITIONS, WHEN YOU NEED HARD ACCELERATION AND NEED IT NOW. IT HAPPENS WHEN YOU ATTEMPT TO ACCELERATE QUICKLY, ESPECIALLY WHEN YOU WERE COASTING OR HAD JUST LET OFF OF THE PEDAL. THESE ARE CONDITIONS THAT OFTEN OCCUR IN TRAFFIC WITH MANY OTHER VEHICLES NEARBY. THE LONG DELAY BETWEEN THROTTLE APPLICATION AND ENGINE RESPONSE IS EXTREMELY DANGEROUS. MY TRUCK HAS THE LATEST "FLASH" FROM THE DEALER, IT IS RUNNING THE MOST UP-TO-DATE FIRMWARE AVAILABLE FROM THE DEALER. DEALER STATED THAT THEY KNOW ABOUT THE ISSUE BUT HAVE NO PLANS TO FIX THE ISSUE.
TL* THE CONTACT OWNS A 2015 RAM 2500. THE CONTACT NOTICED STRONG FUEL FUMES EMITTING FROM THE VENTS OF THE VEHICLE. THE FUMES CAUSED SEVERE HEADACHES TO THE CONTACT AND THE CONTACT'S SON. THE CONTACT'S SON PASSED OUT NUMEROUS TIMES DUE TO THE FUMES. THE DEALER WAS NOTIFIED AND WAS UNABLE TO PROVIDE A REPAIR SOLUTION. THE CONTACT HAD AN INDEPENDENT SOURCE TEST FOR CARBON MONOXIDE AND IT WAS DETERMINED THAT THERE WAS AN EXTREMELY HIGH LEVEL OF FUMES IN THE VEHICLE. THE CONTACT WAITED FOR MONTHS FOR THE DEALER TO ESCALATE THE CONCERN TO THE MANUFACTURER. THE CONTACT AND PASSENGER CONTINUED TO RECEIVE MEDICAL TREATMENT. THE CONTACT WAS UNABLE TO DETERMINE WHEN THE VEHICLE WOULD BE REPAIRED. THE FAILURE MILEAGE WAS UNKNOWN.
Complaints are unverified consumer reports submitted to NHTSA. A high complaint count may reflect vehicle popularity, not defect severity. Data sourced from NHTSA public records.
Data synced from NHTSA on Apr 26, 2026