The contact owns a 2020 Ram 3500. The contact stated that while driving 75 MPH, the vehicle was shaking and then lost motive power. The check engine warning light later illuminated. The vehicle was towed to the dealer, where the federal safety agency Campaign Numbers: 21V880000 (Fuel System, Diesel), 21V398000 (Wheels), and 22V904000 (Structure) were performed. However, the failure recurred. The vehicle was then towed to Gulfgate Dodge Chrysler Jeep Ram (7250 Gulf Fwy, Houston, TX 77017), where it was diagnosed that the fuel line had failed, and the fuel injectors and fuel rail needed to be replaced. The vehicle was not repaired. The manufacturer was made aware of the failure and a case was filed. The failure mileage was approximately 150,000.
2020 Ram 3500: check engine light
6 of the 116 complaints about the 2020 Ram 3500 describe check engine light.
- owner complaints
- 6
- of this car's complaints
- 5%
- recalls
- 2
Check engine light by model year
What owners say
Vehicle will not go into park and shut off. I could not turn the engine off. Not having the ability to turn the motor off is a safety concern. This has progressed to where it says vehicle is not in park while vehicle is in drive and moving. The problem is intermittent and I have documented it with multiple pictures and videos and witness accounts but the dealer has not been able to reproduce the malfunction. The service representative has been helpful but has not been able to. The vehicle has not been inspected by the police or other independent representatives. The vehicle does not have any codes associated with it. This same exact series of malfuctions occurred on my 2016 Ram 2500 and the valve pack on the transmission failed and the vehicle would not move and eventually the transmission failed. Then the emission software would not extinguish the check engine light even though there were no issues. The dealer reinstalled the software and after less than 25 miles the same issue happened. I traded in the vehicle because Ram would not honor the warranty and I could not pass smog with a check engine light on and nothing wrong with the sensors or the output. Now I am having problems with the 3500 progressively going in the exact same way as the 2500. I have had to take it to the dealer 6 or 7 times in as many months and less than 10,000 miles.
Check engine light turned on in my 2020 dodge ram 3500, I took the truck back to the dealership. According to them the Grid Heater Relay needs to be replaced & the truck could have caught on fire if we would have kept driving like that. I have done some research and saw that there has been a recall on that same part for the 2021-2023. Could it be possible the 2020 were defective also, this is a major safety concern and should be looked into. I also don’t believe the customer should be responsible for paying for this issue to be fixed when it was my family’s safety that was jeopardized.
My check engine light went on, along with the DEF warning, early June 13th,2023. The DEF warning stated I had 150 miles to get the Track to a Dealer. After Dealer evaluation, I was told the truck had DEF contamination, from ,Diesel Fuel. I asked how this could happen? I was not given an explanation. To me this is a DEF Pump failure. The DEF Pump did not have enough PSI to inject DEF into the Diesel Fuel, so the Diesel Fuel back flowed into the DEF system. Additional facts, my Truck warranty expired 5/15/2023. My truck has less than 36,000 miles. I had the High Pressure Fuel pump, Recalled fixed in May 2023. I was told this repair did not lead to this issue. The Repair bill is over $3700 for this repair.
While towing 5th wheel vehicle check engine light came on I was out of state in arizona vehicl then started to stall I canceled my trip checking all fluids headed back to California as I was nowhere near a dealership made a appointment at ram dealer when I got there light went out I talked with technician he said would have to leave it for 3 weeks before they could look at vehicle needless to say I took it home then in early Feb about 3 weeks after the first incident the check engine light came on again made appointment which was 3 weeks away just to check it in shop and a week before they even looked at the issue they found a cracked hose on inter cooler dealer stated vehicle ok well again on March 4 2022 vehicle again has check engine light on I took to auto store to check code same as before vehicle regeneration frequency it Regenerates ever 100 miles runs poorly uses excessive fuel hesitates when pedal depressed and long cranking time so now I have to be without a vehicle again
With 20k miles the High-Pressure Fuel Pump blowup in middle of the freeway in NY. This part name is CP4. My truck subtlety stops in freeway in very dangerous situation. My luck is I had a State Patrol few cars back and he help me to safety the area and wait the tow. My truck stays 2 months parked on at Dealer to fix. The reason is they don’t have a new CP4 to replace is because all 2020 diesel Ram trucks had the same problem. 5 months later my CP4 blowup again with 49k miles now my CP4 and my Tank Fuel Pump breakdown in same time. More 2 months to fix.by the way my truck don’t had 9 months old and stay parked on dealer for 4 months. I paid 4 months of car payments and insurance for not use the truck. Other point is my braking pads. I replaced my front braking pads and rotors with 29k miles. This is unbelievable all my trucks I replaced this part between 70k and 90k. I paid $900 and I believe that my truck had something wrong with braking system also. Like I explained before. In both situations my CP4 subtlety blowups and stop my truck in middle of freeway. Truck engine shutoff and in 65 mph freeway this is very dangerous. God save my life in both situations because all the tomes someone come to help me. First time was State Patrol the second time is Highway Patrol in CA. Yes the problem happened 2 times and my truck in lees the 1 year stay parked on dealer for 6 months. With breakdowns in CP4, EGR, ECM, Tank Fuel Pump, Turbo Actuator and a lot leaks and gaskets breakdowns. My truck has now 1 year and 2 months old and stay on dealer for next two weeks to replace the Turbo Actuator. Just take a look on google and you guys gonna see a lot complaints. A lot! I don’t know. They replaced the component but stills breakdown. Every 3 months my truck stays on dealer for 2 months for fix. Last time I pickup my truck at dealer and next day it breakdown again with a different part problem. Actually my trucks stays with check engine lights on for 8 months.
Service bulletins that may apply
- Cummins 6.7L Air Filter Replacement For DTC P0299 Customers must experience a Malfunction Indicator Lamp...
- Radiator - engine cooling
- Bearing
- On Cummins diesel applications that are for 2019 and newer the bpro part 1BP00507AB can on occasions...
- Diagnostic Trouble Code (DTC) P2459-00 Particulate Filter Regeneration Too Frequent Setting in the...
- Flash: Powertrain Control Module (PCM) Updates Customers must experience a Malfunction Indicator Lamp...
- Cummins 6.7L Air Filter Replacement DTC P0299 Customers must experience a Malfunction Indicator Lamp (MIL)...
- For all 2019 MY and newer 6.7L Cummins equipped vehicles, please use filter pn# 53034051A$. For all 2018...
Related recalls
Engine and engine cooling: engine: oil/lubrication
- What is wrong
- Chrysler (FCA US, LLC) is recalling certain 2019-2020 Ram 3500, 4500, and 5500 cab chassis vehicles equipped with a Cummins 6.7L High Output engine. The engine calibration software may not warn about low oil volume.
- Risk
- Low oil can damage the engine, causing an oil leak or a punctured engine block, increasing the risk of a fire.
- Remedy
- Dealers will update the engine calibration software, free of charge. Owner notification letters were mailed June 25, 2021. Owners may contact FCA US LLC customer service at 1‑800‑853‑1403. FCA US LLC's number for this recall is Y21.
Recall number 21V439000 · Recall details
Engine and engine cooling: engine: oil/lubrication
- What is wrong
- Chrysler (FCA US LLC) is recalling certain 2019-2020 Ram 3500, 4500 and 5500 cab chassis built with a Cummins 6.7L High Output engine. Inadequate warmup protection can cause a lack of oil film on the engine connecting rod bearings while the engine is reaching operating temperature. This can result in engine damage and connecting rod failure, which could potentially puncture the engine block.
- Risk
- A damaged engine block may leak oil, which can contact hot engine or exhaust components, increasing the risk of a fire.
- Remedy
- Chrysler will notify owners, and dealers will flash the engine calibration software to enhance the engine warm up protection, free of charge. The recall began September 10, 2020. Owners may contact Chrysler customer service at 1‑800‑853‑1403. Chrysler's number for this recall is W57.
Recall number 20V511000 · Recall details
Questions about the 2020 Ram 3500 check engine light
Is check engine light a common problem on the 2020 Ram 3500?
6 of 116 owner complaints about the 2020 Ram 3500 (5%) mention check engine light. The model year with the most reports is 2022.
Is there a recall or service bulletin for this on the 2020 Ram 3500?
There are 2 recalls and 82 service bulletins for the same area of the car. Check them below with your VIN.
Other symptoms on the 2020 Ram 3500
Fuel pump 23Loss of power 10Stalling 9Fire or smoke 7Power steering loss 7Key fob 5
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