2019 Ram 1500: check engine light

Filed Oct 22, 2026 · Engine · GA

Blown Engine- No prior indicators that were obviously present. Driving on highway and about 40 miles in, loud ticking noises. Truck previously had manifold bolt breaking issues so assumed it was an exhaust leak. Within another 20 miles, the engine light came on and engine noises noticeably increased. Immediately took it to Ram Service and was diagnosed with a failed camshaft and camshaft bearing wear/scoring. Issue was reported to Ram dealership and ultimately fixed at owner cost.

Filed Oct 8, 2026 · CA

"My 2019 Ram 1500 was delivered to the factory-authorized dealership in [XXX], for engine lights on warning failures under factory warranty. The dealership held the vehicle out of service for approximately 60 consecutive days from XXX. The exact minute the vehicle was driven off the lot following this 2-month repair window, the identical dashboard safety warning lights immediately illuminated again. The Check Engine light continuously cycles on and off, preventing California smog compliance. Additionally, when hot, a severe, loud roaring noise emanates from the front engine bay as the cooling fan forces itself into emergency high-blast override. The defect is severe, persistent, and entirely unresolved, rendering the vehicle's safety systems inoperable immediately upon release." AC has not work for years, vehicle has been in and out many times, it's still under warranty and I'm afraid it will expired and I'm stuck paying out of pocket trying to fix it. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

Filed Aug 13, 2026 · Brakes, Engine · CA

This has now happened 3 separate times. Once 1 month ago, my husband and I were on the connecting road from [XXX] toward [XXX] by the water plants stopped in traffic and the truck completely powered off at a red light. It took 30 seconds for the truck to power back on, and be restarted. It showed a check engine light the rest of the drive. The next time it turned on from being off there was no check engine light. Last week we were driving on a the main road toward our house going 30 miles per hour and coming up to a right turn then the truck stopped abruptly and died. It completely powered off and took 2 minutes to power back on. We were blocking a one lane road. It then showed a check engine light that went away after a few days. Today after getting ready to enter [XXX] going 55 miles per hour the truck showed a check engine light and the truck started to power down mid highway entrance and I had to try and pull off before it powered down completely. It took 5 minutes this time for the truck regain power enough to be restart fully. The check engine light is still on. It endangered both me and everyone behind me because I abruptly slowed down and risked not having anywhere to pull over on a highway. Every time it has failed I have been in the middle of a road, lane, highway/freeway. With no way to signal my truck has died and no way to move it. Police have not investigated this issue, no dealerships or shops have looked at this issue currently. The engine, powertrain, brakes, and electrical appear to be not functioning properly in these incidents but it is unknown of the root cause. There has been no other indication that this truck has had these issues or previous recalls for these incidents. This truck was bought from a dealership earlier this year without issue. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

Filed Aug 10, 2026 · Electrical, Transmission · 137,700 miles · TX

The contact owns a 2019 Ram 1500. The contact stated that while driving at an undisclosed speed, the check engine warning light illuminated shortly afterwards. Several unknown warning lights were illuminated. The contact stated that the transmission failed to shift out of first gear. The message “Slow Down - Service Shifter” was displayed. The contact associated the failure with TSB: (23-029-22 Rev. A); and referenced an extended warranty coverage. The vehicle was taken to a local dealer, where it was diagnosed and produced DTC: U0645 - Lost Communication with Active Air Dam Module. The vehicle was not repaired. The manufacturer was contacted and opened a case. The failure mileage was approximately 137,700.

Filed Jul 9, 2026 · Engine · 73,165 miles · FL

The contact owns a 2019 Ram 1500. The contact stated that while reversing and driving at an undisclosed speed, the vehicle was shaking. The check engine warning light was illuminated. Additionally, the vehicle experienced rough idling and failed to exceed 30 MPH while driving. The vehicle was taken to an independent mechanic, who determined that the engine needed to be replaced. The vehicle was not repaired. The manufacturer was not made aware of the failure. The failure mileage was 73,165.

Filed Jun 29, 2026 · Electrical, Transmission · OR

System/Component Malfunction: High-voltage hybrid powertrain system failure. Code P0DAF-00 (Hybrid EV Battery Cell Balancing Circuit) is present and locked in the Hybrid Control Processor (HCP). Vehicle is available for inspection. Safety Risk: Operating a vehicle with an unresolved high-voltage hybrid cell balancing defect poses an immediate safety risk. Cell imbalances can cause sudden loss of motive power at highway speeds, propulsion shutdown, or an increased risk of a thermal event in the high-voltage pack. The manufacturer (Stellantis/RAM Care) refuses to provide a written safety determination, yet the dealer instructed me to continue driving a compromised high-voltage system on public roads until the failure worsens. Dealer Confirmation & Inspection: Confirmed and reproduced by authorized dealer (Ron Tonkin RAM) across multiple visits: Feb 25, 2026 (RO 502329): Code P0DAF-00 present. Dealer performed a BPCM software flash, which failed to resolve the underlying fault. June 2026 (RO 504097): Held for 10 days. Technician documented: "Scanned codes and found code P0DAF-00- Hybrid EV Battery Cell Balancing Circuit present but code is stored (not active) and also not stored in PCM, only the HCP." Tech test-drove 97 miles but corporate engineering (STAR) rules prevent parts authorization until the code migrates from HCP to PCM as an active fault. Dealer explicitly instructed me to drive it until it triggers a hard failure. Warning Lamps & Symptoms: First appeared Feb 25, 2026, via a yellow Check Engine Light. The light intermittently cycles on/off as the computer stores the code, but the underlying high-voltage defect is completely un-repaired.

Filed Jun 24, 2026 · Driver assistance, Electrical · SC

When driving the truck the power steering would go out and make the truck almost impossible to turn. This is dangerous when driving as you cannot turn, avoid a collision, etc. I've had vehicles without power steering, and this was like the truck is actively pulling against you when trying to turn. The dealership did a diagnostic and said the power steering rack (electronic) needs to be replaced completely as it's going out. I'm not sure if it's related, but I've had other issues before this where my lane assist and cruise control would flash while in use and all turn off while driving down the road as well. There was no obvious check engine light or codes for this, just the occasional shutting off of my systems and power steering while operating the vehicle.

Filed Mar 26, 2026 · Transmission · WA

Transmission won't go into reverse at times, auto shifting back to park before check engine light comes on. Vehicle initially started with hard shifts at low speeds about 25 mph. Issue progressed to the point where vehicle has to be put into reverse. Otherwise vehicle would not shift at the same point about 25 mph and would be stuck in the low gear until vehicle is shut off and restarted then put into reverse before proceeding. The issue has continued to grow where shifting into reverse causes the vehicle to noticeably lurch back with a very heavy thunk before putting it into drive. Reverse takes time engaging. However the issue will persist and it will not go into reverse before Auto shifting to park and the check engine light comes on. Vehicle would drive for a little while before the transmission would stop shifting and go into limp mode where I wouldn't be able to drive over 30 miles per hour without very high RPMs. During some of those times the vehicle would take a long time before the transmission would engage and shift which would cause the vehicle to jerk abruptly forward. And at times back tires have lost traction. Recently the vehicles transmission has disengaged entirely while driving. At times it'll be 40 mph where it will disengage or in one case about 15 mph as I was making a turn and in the intersection it disengaged. First time the vehicle went to a dealership. They were unable to replicate the problem and that was approximately 30,000 mi on the odometer. The second time it went in with the issue it was diagnosed as being a service bulletin which was then updated and issue remained. The third time it was brought in there was a code that showed that the clutch gear ratio was incorrect. Mechanics have said the vehicle needs a new transmission and this has been a known issue with the 8-speed 8 HP75 by ZF transmissions. Transmission has also surged and lunged while braking at various points. While completely stopped, vehicle has lurched forward.

Filed Jan 2, 2026 · Fuel system · AZ

I bought this truck 11/13/2025 and it has been in the shop since I bought it. It’s been “fixed” 4 times, including replacing the fuel pump. The vehicle is still stalling out and the same check engine code po62A keeps popping up. The engine light has popped up right after I’ve picked it up from the mechanic every time. It’s been to 3 different mechanics and no one can seem to fix the issue. It has become unsafe for me to drive. The dealership is no longer returner my calls or helping with these issues. I’m stuck paying off a vehicle that isn’t properly running.

Filed Dec 1, 2025 · Engine · 52,800 miles · FL

The contact owns a 2019 Ram 1500. The contact stated that the check engine warning light had illuminated. Additionally, the contact stated that while driving, the throttle sensor warning light illuminated. The contact stated that the failure had recurred while driving. The vehicle was taken to the dealer where it was purchased, and the light was reset; however, the failure recurred. The contact stated that while driving 45-50 MPH, the failure recurred, and the vehicle stalled. The contact was able to pull over to the side of the road, but the vehicle failed to restart. The vehicle was towed to the dealer where it was purchased, and the throttle sensor was replaced; however, the vehicle failed to start. The contact was referred to a Dodge dealer. The vehicle was towed to Daytona Dodge Chrysler Jeep Ram (1450 N Tomoka Farms Rd Suite A, Daytona Beach, FL 32124); but no assistance was provided. The vehicle was then towed to Sebastian's Auto Repair Inc, where the valve cover gasket was taken apart, but no failure was found. The warranty company was contacted and advised the contact that the entire engine needed to be taken apart for the repair to be covered. The vehicle was not diagnosed or repaired. The manufacturer was notified of the failure and advised the contact to tow the vehicle back to the Dodge dealer for diagnostic testing. The failure mileage was approximately 52,800.

Filed Oct 21, 2025 · Electrical · TN

Start stop/ Battery/ Engine lights all came on and warning messages said, stop start unavailable and some electrical power loss. Vehicle was taken to dealership for repairs. MGU was defective (Motor Generator Unit). Was informed parts were not available back ordered. 5000 units on order no available parts.

Filed Oct 10, 2025 · Electrical · WV

The RFH module is defective for the year and has already been replaced by a new model. When the module goes bad it can leave you stranded because it runs the security section of the computer. The computer will not recognize the key fobs, and the car can shut off and not restart leaving you stranded. Mechanic also informed me that it could also cause issues during driving not just when you stopped. The main warning lamp is the check engine light will illuminate and will throw a code for ECU not initializing.