2020 Ram 2500 Engine Problems

Def pump failed twice with this vehicle and with that it does not allow the vehicle to run any faster than 5 mph after the countdown ends. Unknown how the exhaust being plugged and service was done to clean the exhaust ended up having the fuel pump and turbo charger needing replaced. Not sure if they went hand in hand and one causing the other. So far the vehicle only has almost 78,000 miles on it. Change oil and fuel filters at the vehicles scheduled computer system reports on the vehicle. I was having issues from service center having trouble resetting the exhaust system, which they said the system was not sealing properly. Took them a couple of days to get part from dealership to get it to seal and reprocessed the test which they said passed exhaust reset. That would explain the poor fuel rating of only getting 9 miles per gallon. If there was a complete fuel pump failure, not sure if that would compare to this being a safety issue. Not sure how engine would react, due to it completely failing or if the turbo would cause the vehicle to be unsafe. The vehicle is currently at dealership and only 1 out of the 3 are even available to fix this problem. Def pump is available, but unknown when the others will arrive. Service shop said it could be 3 weeks or 8 months for parts to come in. Due to being a back ordered item. Spent $70k for this vehicle, just to have it spend over 2 months in the shop. I do my own oil and fuel filter changes, due to it being faster and cheaper than any dealer or shop.

Subject: Fuel System Failure Resulting in Engine Damage – 2020 RAM 2500 Pickup VIN: [XXX] Complaint Summary: I am submitting this complaint to formally report a dangerous and costly fuel system defect in my 2020 Dodge Ram 2500 Pickup (VIN: [XXX] ) that has resulted in catastrophic engine damage. Although Chrysler has issued a recall for the high-pressure fuel pump (HPFP) in many 2020 Ram trucks equipped with the 6.7L Cummins engine, I was told that my vehicle was not included in the recall—even though it exhibits all the classic symptoms of HPFP failure. This is a safety hazard and a potential emissions violation. Details of the Incident: In June 2025, I brought my truck to Tracy Chrysler Dodge Jeep RAM after experiencing engine misfires, loss of power, and a knocking noise. The dealership diagnosed a P0303 cylinder misfire and noted a fuel smell in the engine oil, as documented in repair order #[XXX]. Despite extensive diagnostic work—including compression tests, leak-down, and injector swaps—the misfire remained unresolved, and a tapping noise persisted. The technician explicitly noted fuel contamination in the oil and suspected internal engine damage due to a fuel system issue. To further investigate, I submitted an oil sample to Blackstone Laboratories. The lab confirmed the engine oil was heavily diluted with diesel fuel—over 10% fuel contamination, which reduced the viscosity from 5W40 to the equivalent of 5W20. This is consistent with HPFP failure leaking fuel into the crankcase. The oil report also noted excessive steel wear and recommended immediate oil change and fuel system inspection. At no time was a check engine light present, nor was there a clear diagnostic code for HPFP failure. Chrysler continues to deny responsibility even though the evidence clearly points to a failed HPFP—a well-documented issue for this engine model and year. The cost of diagnosis and parts alone has exceeded $4,000, and the engine is likely destroy INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

I have a check engine light that came on. I took it to the dealer and they said it is a P0542 code for heating element relay. There is a technical service bulletin out for this known issue. I still have power train warranty left on my truck but they’re claiming it isn’t covered. I went as far as to add a bank ram air intake for over $1000 to help eliminate a complete engine failure. Any help would be appreciated

Throws code p2609 which is grid heater, this needs to be fixed at 38000 miles, I'm sure it'll cause a fire like the other model years that is being recalled for the same issue

Massive oil leak that everyone has issues with also has a grid heater bolt that fails and causes engine damage. The oil leaks are terrible for the environment and causing leaks all over every road

There is a known issue with the vehicle surging during normal driving situations. Doge has an article about this but will not address or fix the issue. Their article states that it’s possible that this will not create a code. I have 42000 miles on this engine.

The contact owns a 2020 Ram 2500. The contact stated that while driving approximately 65 MPH, there was a knocking noise coming from the engine compartment, with the check engine warning light illuminated. The vehicle was taken to the local dealer to be diagnosed. The contact was informed that engine grid heater had overheated, causing damages to the engine. The engine was replaced, and the vehicle was repaired. The manufacturer was notified of the failure. The failure mileage was 300,000.

Cracked Exhaust manifold, cracked bolts, broken. 17k miles

Dealer unable to get recall parts since the inception of the recall. Dealer says they only receive a couple of DIPSTICKS a month. Long waiting list. I called Chrysler to no avail. Ridiculous wait for a dipstick!

06/??/22 I CONTACTED DEALER ABOUT HIGH PRESSURE FUEL PUMP ISSUE.SERVICE DEPT. STATED THEY WOULD HAVE TO ORDER NEW PUMP , WOULD BE IN AUGUST,, & TAKE 2 DAYS TO COMPLETE..WAITED UNTIL SEPTEMBER 2022 TO CONTACT AGAIN ABOUT RECALL, BASICALLY HUNG UP ON. CONTACTED AGAIN A FEW WEEKS AGO . LEFT COMPLETE MESSAGE STATED ALL THAT TRANSPIRED SO FAR W/ VIN # & CALL BACK # NO RESPONSE A FAILURE OF THIS PART CAN CAUSE A CATASTROPHIC ENGINE FAILURE...

I have tried to get a new fuel pump from the dealer. No such luck yet. Now my truck is not drivable. It has multiple misfires and sounds just downright horrible. This truck has been serviced religiously. I have done everything the truck needs done at the times it needed done. Now the truck again is not drivable. The engine sounds like it is about to blow. I need someone to tell me what I need to do now. I do not have thousands of dollars to put into this truck, all because the fuel pump has not been available.

Summary - 2020 RAM 2500 CP4 Fuel Pump failure We departed on Saturday Oct 16, 2020, for a trip from our home in Raleigh NC to Florida for our 35th anniversary. The truck sputtered then stalled on the side of interstate 95 (southbound) in South Carolina about 60 miles from the Georgia border. We were towed to the nearest RAM dealership (Butler Chrysler Dodge Jeep RAM) in Beaufort, SC. The earliest we could get a rental was the following Wednesday (10/20) so decided to stay nearby at a local beach. We came back through on Friday to finally get our rental and returned home. Today is 11/4 and we still don't have our truck. I was told the problem was the CP4 Fuel Pump. Apparently it disintegrated (their words) and threw metal shavings all through the fuel system. They told me they had to change everything from the fuel tank all the way to the injectors. The last of the parts are supposed to be in later today, so am looking at driving the 5 hours back down to Beaufort SC this or next weekend to pick up the truck depending on when the repairs are made.

FCA started a recall in October of 2021 for the high-pressure fuel pump on 2020-2022 Ram 2500 trucks with the 6.7 Cummins turbo Diesel. This recall can and has been catastrophic to the fuel systems and engines. As of 3/30/2022 there still is no remedy. I am experiencing engine shutter and shaking and hard starts on a vehicle with only 24,000 miles on it which i believe is due to the failing fuel system and fuel pump. i would like to know if this recall can be expedited and the problem corrected before catastrophic failure happens.

I was driving on the freeway when the truck suddenly began surging the throttle. I began to make my way to the shoulder. By the time I was in the shoulder the truck lost all power. I came to a stop and the engine began shuddering and bogging down before I was able to safely shut it off. Fortunately traffic was light and I didn’t have a trailer, this could have been very dangerous had I needed to accelerate and lost all power to the truck. Dealer diagnosed with a failed CP4 injection pump, a know issue for this model year.

TRUCK DIED IN TRAFFIC. LOST ALL POWER STEERING, BRAKES, ETC. ALMOST CAUSED A MULTIPLE VEHICLE ACCIDENT, AND LEFT ME STRANDED IN THE MIDDLE OF TRAFFIC UNTIL I COULD GET ASSISTANCE TO MOVE. THERE WAS NO WARNING OR NOTICE BEFORE THE TRUCK JUST QUIT WORKING. A WARNING LIGHT CAME ON AFTER THE TRUCK DIED AND STATED "EXHAUST SYSTEM FAILURE. SEE DEALER IMMEDIATELY".

LOSING POWER WHILE DRIVING DOWN THE ROAD. LOSING POWER WHEN PUSHING ON GAS PEDAL. MAKES AWFUL NOISE WHEN STARTING. ALMOST SOUNDS LIKE A BAD STARTER

THE 2019 TO 2020 MODEL YEAR RAM 2500 HEAVY DUTY EQUIPPED WITH A 6.7L CUMMINS DIESEL ENGINE HAS A MAJOR SAFETY ISSUE THAT COULD CAUSE A STALL AND INCREASE THE RISK OF A CRASH. THE BOSCH CP4.2 FUEL INJECTION PUMP HAS A VERY HIGH RATE OF SUDDEN FAILURE LEADING TO IMMEDIATE STOPPAGE ON THE ENGINE AND ENGINE BRAKING SYSTEM. THE PUMP DESTROYS ITSELF AND TAKES OUT THE REST OF THE ENTIRE FUEL SYSTEM LEADING TO REPAIRS IN THE $20,000 USD RANGE. FCA & RAM HAVE ATTEMPTED TO REVISE THE PUMP IN LATE (JULY) 2020 TO SOLVE THE ISSUE BUT THE FAILURES KEEP OCCURRING. FOR THE 2021 MODEL YEAR, FCA & RAM HAVE CHANGED THE PUMP ENTIRELY AND REVERTED BACK TO USING AN OLDER, SAFER, MORE RELIABLE DESIGN. NO PUBLIC ANNOUNCEMENTS OF NEITHER THE PUMP REVISION IN 2020, NOR THE PUMP CHANGE IN 2021 HAVE BEEN MADE. THE ISSUE IS SO PREVALENT THAT THE REPLACEMENT PUMPS AND REPAIRS GENERALLY HAVE A 30-90 DAY WAIT PERIOD WHERE THE CUSTOMER IS WITHOUT THE PRIMARY VEHICLE. THIS PROBLEM IS A SUBSTANTIATED SAFETY RISK. ACCORDING TO A TEXAS JUDGE IN A BOSCH CP4.2 LAWSUIT, WHEN ANOTHER AUTOMAKER, GM TRIED TO DISMISS THE CASE SAYING THE PUMP FAILURE IS NOT A SAFETY ISSUE, THE COURT RESPONDED: "THE WORST CASE SCENARIO OF A TRUCK SPONTANEOUSLY STALLING AT HIGH SPEEDS IS NOT A MERE INCONVENIENCE. NOR IS IT A MERE INCONVENIENCE TO SPEND BETWEEN $8,000 TO $20,000 ON REPAIRS TO MAKE THE TRUCKS FIT FOR THEIR ORDINARY PURPOSE. THE COURT REJECTS GM'S SUGGESTION THAT THE RISK OF SPONTANEOUS ENGINE FAILURE WHILE DRIVING IS NOT, AS A MATTER OF LAW, UNREASONABLY DANGEROUS, DEPRIVING THE VEHICLES OF FITNESS FOR THEIR PURPOSE OF TRANSPORTATION.". TOYOTA AGREES: "IF A VEHICLE STALL OCCURS WHILE DRIVING AT HIGHER SPEEDS, THIS COULD INCREASE THE RISK OF A CRASH". FCA & RAM HAVE REMEDIED THE SITUATION FOR THE 2021 MODEL YEAR, HOWEVER THE 2019 AND 2020 OWNERS ARE STILL AT RISK. THE NHTSA NEEDS TO FORCE THE HAND OF FCA TO RECALL.