There are 2 owner-reported fuel system complaints for the 2015 Ram ProMasterin NHTSA's database. These are unverified consumer reports and may not reflect confirmed defects.
The contact owns a 2015 Ram ProMaster 2500. The contact stated that the same day that the vehicle was purchased, the check engine warning light illuminated. The contact stated that after shifting to park(P) and the parking brake was engaged, the vehicle rolled backwards. The vehicle was taken to the dealer, who diagnosed the vehicle with an unknown sensor failure. The sensor and the brakes were repaired. The contact retrieved the vehicle, and the check engine warning light was illuminated. When the gear lever was shifted to park(P) and the parking brake was engaged, the vehicle rolled backwards. The dealer was contacted, and the dealer at first refused to take the vehicle. After several months, the dealer took the vehicle, and it was diagnosed and determined that the fuel injectors, brakes, fuel tank, and an unknown sensor needed to be replaced. The vehicle was not repaired due to the cost. The contact stated that the failure persisted. The vehicle was parked at the residence and had not been driven since. The manufacturer was not notified of the failure. The failure mileage was approximately 60,000.
ELECTRONIC THROTTLE CONTROL AND MALFUNCTION INDICATOR LIGHT CAME ON SPORADICALLY DURING A 2,000 MILE TRIP OVER A 2 WEEK PERIOD. CAUSED VEHICLE AUTOMATIC SHIFTING TO JUMP FROM GEAR TO GEAR AND SPEED AND ENGINE RPM TO NOT RESPOND TO FOOT PEDAL WHILE DRIVING. DEALER FLUSHED FUEL SYSTEM STATING PROBLEM WAS BIODIESEL IN TANK. OWNERS MANUAL SAYS BIODIESEL CAN BE USED.
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