IllustrationJust driving normal condition and speed all of a sudden my car jam or brake on it’s own, causing a quick sudden jerk and almost getting hit from the back. All of my front sensors and back sensors was shut off at this time.
2021 RAM 1500
Owner reports · Recalls · Investigations
Similar to other model years
Owner complaints for the 2021 RAM 1500 do not stand out strongly from the model-year median of 616.
About this comparison →How this year compares
Owner complaints by model year
Compare all 1500 years →Counts vary with age, sales and reporting. They are not failure rates.
What owners reported most
All reported categories
Tap a category to read its complaints. One report may name several components.
When problems were reported
Mileage at the reported incident
Limited mileage data: 108 of 678 reports include usable mileage. There isn’t enough coverage to show a useful chart.
NHTSA’s mileage field refers to the reported incident, not necessarily the filing date. This shows report counts, not the likelihood of a failure.
What to inspect
Issues worth paying extra attention to based on owner reports.
- Engine. Review the 276 owner reports in this category and discuss these concerns during a pre-purchase inspection. Read reports →
- Electrical System. Review the 197 owner reports in this category and discuss these concerns during a pre-purchase inspection. Read reports →
- Power Train. Review the 98 owner reports in this category and discuss these concerns during a pre-purchase inspection. Read reports →
NHTSA owner reports · September 18, 2026 snapshot.
27 crash reports4 fire reports17 injury reports
Unknown Or Other complaints
103 reportsdash board is bubbling and the vehicle has 46k miles.
Open recall 75B on 21 ram 1500 dealer and manufacture says they don’t not have software update for my vehicle and there nothing they can do. Hard to get into contact with anyone and once I do I’m transferred or waiting on hold for hours
Recall on vehicle I just bought for a long trip, has no remedy!
Both of the front driver and passenger side flip down sun visors have broken within one week of each other. Each visor is attached to the ceiling of the cab by a metal arm with a plastic retaining clip. That plastic clip has broken on both visors within one week of each other and my truck only gets very light use. Since the r…
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Both of the front driver and passenger side flip down sun visors have broken within one week of each other. Each visor is attached to the ceiling of the cab by a metal arm with a plastic retaining clip. That plastic clip has broken on both visors within one week of each other and my truck only gets very light use. Since the retaining clip is broken both visors fall out of the ceiling and hang in the view of the driver and block the line of sight, which means the driver can not see directly in front forward. I have spoken to the local Dage Ram dealership who sold me the truck as well as the main national Ram customer service and both say the repair is outside of warranty even though its a safety issue and a clear defect so they will not fix the issues without me paying form $550 plus labor for each visor.
After changing the battery, my truck was affected by a computer malfunction which caused my ABS, forward collision detection, electronic stability control and other systems to not work and indicate trouble in the dash. I took it to the dealer, and they charged me $205 to reprogram the computer. These are all symptoms of recall…
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After changing the battery, my truck was affected by a computer malfunction which caused my ABS, forward collision detection, electronic stability control and other systems to not work and indicate trouble in the dash. I took it to the dealer, and they charged me $205 to reprogram the computer. These are all symptoms of recall 85B, but my VIN is not in the affected list at this time. I believe the list should be expanded and that I should receive a refund from FCA for the repair work that was completed.
Heater core went out at 60,000 or even earlier. Antifreeze has been coming out of my vents for weeks. I have kids under 3. The part is back ordered at every dealership ive called.
Exhaust manifolds on both sides cracked and need replacing. Started about a year ago from this date. Dealer informed my mechanic they are seeing about 1400 units replaced a month.
This has happened twice both on the interstate. Vehicle just turns off by itself. No codes are flashed up (unless they came up right as it happened and I didn't see them because I was too worried about getting hit). I called the Dodge dealership and scheduled an appointment. Went on 3/9/2024. They scanned the vehicle and did not…
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This has happened twice both on the interstate. Vehicle just turns off by itself. No codes are flashed up (unless they came up right as it happened and I didn't see them because I was too worried about getting hit). I called the Dodge dealership and scheduled an appointment. Went on 3/9/2024. They scanned the vehicle and did not see any codes. Was asked if I wanted to have a tech look at the vehicle. Was recommended not to because there was no codes and the likelihood of them finding anything was slim to none. They were also going to charge me for the diagnostic (to have the tech look at it) even if there was not an issue found. Service Rep (not the tech) told me she recommended that I try to take a video of it, if it happens again, so they could see what codes come up. This issue as well as the suggestion to try to video it is a huge safety risk. (happened 1/28/2024 the first time I thought it was because the vehicle sat for a week without being driven - figured it was water in the fuel until it happened again on 3/4/2024)
Once again this truck turned off on me as I was entering the freeway and this last incident occurred with my kids in tow so I called my financing company to come pick it up cause we almost got hit and it wasn’t gonna be good…but thankful the rig driver was able to move to the next lane and he pulled over and checked on us and ga…
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Once again this truck turned off on me as I was entering the freeway and this last incident occurred with my kids in tow so I called my financing company to come pick it up cause we almost got hit and it wasn’t gonna be good…but thankful the rig driver was able to move to the next lane and he pulled over and checked on us and gave us video. It sat at the dealership for the first year on and off for this issue and due to it never happening with them they disregarded the issues. Second year again truck in and out the dealership and still since it didn’t happen under their watch again disregard. I have multiple videos and statements but that didn’t make ram fca listen.
Official recalls
1526V495000 · Seat Belts:rear/other:anchorage
Jul 30, 2026
Chrysler (FCA US, LLC) is recalling certain 2019-2026 Ram 1500 vehicles. The second-row center and left-side seat belt buckle anchors may have been improperly installed. As such, these vehicles fail to comply with the requirements of Federal Motor Vehicle Safety Standard number 210, "Seat Belt Assembly Anchorages."
Consequence & remedy
Consequence: An improperly installed seat belt buckle anchor may fail to properly restrain occupants, increasing the risk of injury during a crash.
Remedy: Dealers will inspect and attach the seat belt buckle anchor to the body structure as necessary, free of charge. Owner notification letters are expected to be mailed August 18, 2026. Owners may contact Chrysler customer service at 1-800-853-1403. Chrysler's number for this recall is 67D. Vehicle Identification Numbers (VINs) involved in this recall will be searchable on NHTSA.gov on August 6, 2026.
25V765000 · Air Bags:frontal; Steering:steering Control Module
Nov 6, 2025
Chrysler (FCA US, LLC) is recalling certain 2021-2022 Ram 1500, Ram 2500, Ram 3500, Ram 4500, and Ram 5500 vehicles. The steering column control module may cause the driver's side air bag not to deploy as intended. As such, these vehicles fail to comply with the requirements of Federal Motor Vehicle Safety Standard number 208, "Occupant Crash Protection."
Consequence & remedy
Consequence: A driver's side air bag that does not deploy as intended increases the risk of injury in a crash.
Remedy: Dealers will replace the steering column control module, free of charge. Owner notification letters were mailed beginning December 11, 2025. Owners may contact Chrysler customer service at 800-853-1403. Chrysler's number for this recall is 14C. Vehicle Identification Numbers (VINs) involved in this recall became searchable on NHTSA.gov beginning November 13, 2025.
Additional source detail variants (2)
Steering:steering Control Module
Chrysler (FCA US, LLC) is recalling certain 2021-2022 Ram 1500, Ram 2500, Ram 3500, Ram 4500, and Ram 5500 vehicles. The steering column control module may cause the driver's side air bag not to deploy as intended. As such, these vehicles fail to comply with the requirements of Federal Motor Vehicle Safety Standard number 208, "Occupant Crash Protection."
Consequence: A driver's side air bag that does not deploy as intended increases the risk of injury in a crash.
Remedy: Dealers will replace the steering column control module, free of charge. Owner notification letters were mailed beginning December 11, 2025. Owners may contact Chrysler customer service at 800-853-1403. Chrysler's number for this recall is 14C. Vehicle Identification Numbers (VINs) involved in this recall became searchable on NHTSA.gov beginning November 13, 2025.
Air Bags:frontal
Chrysler (FCA US, LLC) is recalling certain 2021-2022 Ram 1500, Ram 2500, Ram 3500, Ram 4500, and Ram 5500 vehicles. The steering column control module may cause the driver's side air bag not to deploy as intended. As such, these vehicles fail to comply with the requirements of Federal Motor Vehicle Safety Standard number 208, "Occupant Crash Protection."
Consequence: A driver's side air bag that does not deploy as intended increases the risk of injury in a crash.
Remedy: Dealers will replace the steering column control module, free of charge. Owner notification letters were mailed beginning December 11, 2025. Owners may contact Chrysler customer service at 800-853-1403. Chrysler's number for this recall is 14C. Vehicle Identification Numbers (VINs) involved in this recall became searchable on NHTSA.gov beginning November 13, 2025.
25V298000 · Air Bags; Electrical System:wiring
May 8, 2025
Chrysler (FCA US, LLC) is recalling certain 2019-2024 Ram 1500 vehicles. The driver's side air bag may not be connected properly, which can cause the air bag not to deploy as intended. As such, these vehicles fail to comply with the requirements of Federal Motor Vehicle Safety Standard number 208, "Occupant Crash Protection."
Consequence & remedy
Consequence: A driver's side air bag that does not deploy as intended increases the risk of injury in a crash.
Remedy: Dealers secured the connectors for the air bag, free of charge. All vehicles have been remedied. Owner notification letters were mailed May 27, 2025. Owners may contact Chrysler customer service at 800-853-1403. Chrysler's number for this recall is 08C.
Additional source detail variants (2)
Air Bags
Chrysler (FCA US, LLC) is recalling certain 2019-2024 Ram 1500 vehicles. The driver's side air bag may not be connected properly, which can cause the air bag not to deploy as intended. As such, these vehicles fail to comply with the requirements of Federal Motor Vehicle Safety Standard number 208, "Occupant Crash Protection."
Consequence: A driver's side air bag that does not deploy as intended increases the risk of injury in a crash.
Remedy: Dealers secured the connectors for the air bag, free of charge. All vehicles have been remedied. Owner notification letters were mailed May 27, 2025. Owners may contact Chrysler customer service at 800-853-1403. Chrysler's number for this recall is 08C.
Electrical System:wiring
Chrysler (FCA US, LLC) is recalling certain 2019-2024 Ram 1500 vehicles. The driver's side air bag may not be connected properly, which can cause the air bag not to deploy as intended. As such, these vehicles fail to comply with the requirements of Federal Motor Vehicle Safety Standard number 208, "Occupant Crash Protection."
Consequence: A driver's side air bag that does not deploy as intended increases the risk of injury in a crash.
Remedy: Dealers secured the connectors for the air bag, free of charge. All vehicles have been remedied. Owner notification letters were mailed May 27, 2025. Owners may contact Chrysler customer service at 800-853-1403. Chrysler's number for this recall is 08C.
24V754000 · Visibility:rearview Mirrors/devices
Oct 10, 2024
Chrysler (FCA US, LLC) is recalling certain 2020-2023 Ram 1500 Classic vehicles equipped with heated trailer tow rearview mirrors. The mirror glass may detach from the driver's side heated trailer tow rearview mirror. As such these vehicles fail to comply with the requirements of Federal Motor Vehicle Safety Standard number 111, "Rear Visibility."
Consequence & remedy
Consequence: Detached mirror glass can reduce driver visibility, increasing the risk of a crash.
Remedy: Dealers will replace the mirror glass, free of charge. Owner notification letters were mailed December 5, 2024. Owners may contact FCA Customer Service at 1-800-853-1403. FCA's number for this recall is 86B.
24V653000 · Electronic Stability Control (esc):control Module; Service Brakes, Hydraulic:antilock/traction Control/electronic Limited Slip:control Unit/module
Sep 5, 2024
Chrysler (FCA US, LLC) is recalling certain 2019, 2021-2024 Ram 1500 vehicles. Due to a software malfunction, the anti-lock brake system (ABS) control module may disable the electronic stability control system. As such, these vehicles fail to comply with the requirements of Federal Motor Vehicle Safety Standard number 126, "Electronic Stability Control Systems."
Consequence & remedy
Consequence: Driving with a disabled electronic stability control system can increase the risk of a crash.
Remedy: Dealers will update the ABS control module software, free of charge. Interim notification letters, notifying owners of the safety risk, were mailed October 10, 2024. Owner notification letters were mailed beginning September 26, 2024. Owners may contact FCA US, LLC customer service at 1-800-853-1403. FCA US, LLC's number for this recall is 85B.
Additional source detail variants (2)
Electronic Stability Control (esc):control Module
Chrysler (FCA US, LLC) is recalling certain 2019, 2021-2024 Ram 1500 vehicles. Due to a software malfunction, the anti-lock brake system (ABS) control module may disable the electronic stability control system. As such, these vehicles fail to comply with the requirements of Federal Motor Vehicle Safety Standard number 126, "Electronic Stability Control Systems."
Consequence: Driving with a disabled electronic stability control system can increase the risk of a crash.
Remedy: Dealers will update the ABS control module software, free of charge. Interim notification letters, notifying owners of the safety risk, were mailed October 10, 2024. Owner notification letters were mailed beginning September 26, 2024. Owners may contact FCA US, LLC customer service at 1-800-853-1403. FCA US, LLC's number for this recall is 85B.
Service Brakes, Hydraulic:antilock/traction Control/electronic Limited Slip:control Unit/module
Chrysler (FCA US, LLC) is recalling certain 2019, 2021-2024 Ram 1500 vehicles. Due to a software malfunction, the anti-lock brake system (ABS) control module may disable the electronic stability control system. As such, these vehicles fail to comply with the requirements of Federal Motor Vehicle Safety Standard number 126, "Electronic Stability Control Systems."
Consequence: Driving with a disabled electronic stability control system can increase the risk of a crash.
Remedy: Dealers will update the ABS control module software, free of charge. Interim notification letters, notifying owners of the safety risk, were mailed October 10, 2024. Owner notification letters were mailed beginning September 26, 2024. Owners may contact FCA US, LLC customer service at 1-800-853-1403. FCA US, LLC's number for this recall is 85B.
23V265000 · Power Train:automatic Transmission:control Module (tcm/pcm/tecm)
Apr 13, 2023
Chrysler (FCA US, LLC) is recalling certain 2021 Ram 1500 vehicles equipped with 5.7L eTorque engines. The powertrain control module software may cause an incorrect fuel mixture condition in the engine, and result in an engine stall.
Consequence & remedy
Consequence: An engine stall can increase the risk of a crash.
Remedy: Dealers will update the Powertrain Control Module calibration software, free of charge. Owner notification letters were mailed April 27, 2023. Owners may contact FCA US, LLC customer service at 1-800-853-1403. FCA US, LLC's number for this recall is 37A.
23V059000 · Back Over Prevention:display Function
Feb 9, 2023
Chrysler (FCA US, LLC) is recalling certain 2021-2023 Ram 1500 and 2023 Ram 2500 vehicles. The trailer reverse steering control module (TRSCM) may prevent the rearview image from displaying when the vehicle is placed in reverse. As such, these vehicles fail to comply with the requirements of Federal Motor Vehicle Safety Standard number 111, "Rear Visibility."
Consequence & remedy
Consequence: A rearview image that does not display while in reverse decreases the driver's visibility of the rear view, increasing the risk of injury or crash.
Remedy: Dealers will update the TRSCM software, free of charge. Owner notification letters were mailed March 1, 2023. Owners may contact FCA US, LLC customer service at 1-800-853-1403. FCA US, LLC's number for this recall is 14A. This recall supersedes and expands previous recall numbers 21V-438 and 21V-918. FCA US Recall ID 63A is a vehicle population expansion of FCA US Recall ID 14A (NHTSA Recall ID 23V-059).
22V904000 · Structure:body:tailgate:hinge And Attachments
Dec 8, 2022
Chrysler (FCA US, LLC) is recalling certain 2019-2022 Ram 1500, 2500, and 3500 pickup trucks. The tailgate may not latch properly due to misaligned tailgate strikers, which could result in the tailgate opening while driving.
Consequence & remedy
Consequence: An unintended tailgate opening while driving may result in a loss of unsecured cargo, possibly creating a road hazard and increasing the risk of a crash.
Remedy: Dealers will inspect the tailgate striker alignment to the box latch and adjust, if necessary, free of charge. Owner notification letters were mailed December 22, 2022. Owners may contact FCA US, LLC customer service at 1-800-853-1403. FCA US, LLC's number for this recall is ZB8.
22V767000 · Engine; Fuel System, Gasoline:delivery:fuel Pump
Oct 13, 2022
Chrysler (FCA US, LLC) is recalling certain 2020-2022 Jeep Wrangler, Ram 1500, and 2021-2022 Jeep Gladiator vehicles equipped with 3.0L diesel engines. The high pressure fuel pump (HPFP) may fail, causing an engine stall.
Consequence & remedy
Consequence: An engine stall can increase the risk of a crash.
Remedy: Dealers will replace the HPFP and inspect and replace additional fuel system components, as necessary, free of charge. Owner notification letters were mailed October 17, 2023. Owners may contact Chrysler customer service at 1-800-853-1403. Chrysler's number for this recall is Z96.
Additional source detail variants (2)
Engine
Chrysler (FCA US, LLC) is recalling certain 2020-2022 Jeep Wrangler, Ram 1500, and 2021-2022 Jeep Gladiator vehicles equipped with 3.0L diesel engines. The high pressure fuel pump (HPFP) may fail, causing an engine stall.
Consequence: An engine stall can increase the risk of a crash.
Remedy: Dealers will replace the HPFP and inspect and replace additional fuel system components, as necessary, free of charge. Owner notification letters were mailed October 17, 2023. Owners may contact Chrysler customer service at 1-800-853-1403. Chrysler's number for this recall is Z96.
Fuel System, Gasoline:delivery:fuel Pump
Chrysler (FCA US, LLC) is recalling certain 2020-2022 Jeep Wrangler, Ram 1500, and 2021-2022 Jeep Gladiator vehicles equipped with 3.0L diesel engines. The high pressure fuel pump (HPFP) may fail, causing an engine stall.
Consequence: An engine stall can increase the risk of a crash.
Remedy: Dealers will replace the HPFP and inspect and replace additional fuel system components, as necessary, free of charge. Owner notification letters were mailed October 17, 2023. Owners may contact Chrysler customer service at 1-800-853-1403. Chrysler's number for this recall is Z96.
22V638000 · Back Over Prevention:display Function
Aug 25, 2022
Chrysler (FCA US, LLC) is recalling certain 2020-2021 Jeep Wrangler, RAM 1500 and 2021 Jeep Gladiator vehicles. A radio software error may prevent the rearview image from displaying. As such, these vehicles fail to comply with the requirements of Federal Motor Vehicle Safety Standard number 111, "Rear Visibility."
Consequence & remedy
Consequence: A rearview camera that does not display an image reduces the driver's rear view, increasing the risk of a crash.
Remedy: Dealers will update the radio software, free of charge. Owner notification letters were mailed October 6, 2022. Owners may contact FCA US, LLC customer service at 1-800-853-1403. FCA, LLC's number for this recall is Z86.
21V925000 · Air Bags:side/window:curtain
Nov 24, 2021
Chrysler (FCA US, LLC) is recalling certain 2021-2022 Ram 2500, Ram 3500, and 2021 Ram 1500 Classic pickup trucks. The side air bag inflatable curtain (SABIC) assemblies may have been manufactured with the incorrect amount of compressed gas, which can result in an improper air bag deployment.
Consequence & remedy
Consequence: An air bag that deploys improperly can increase the risk of injury in a crash.
Remedy: Dealers will replace the SABIC assemblies, free of charge. Owner notification letters were mailed January 17, 2022. Owners may contact FCA US, LLC customer service at 1-800-853-1403. FCA US, LLC's number for this recall is Y99.
21V918000 · Back Over Prevention:display Function; Steering:steering Control Module
Nov 23, 2021
Chrysler (FCA US, LLC) is recalling certain 2021 Ram 1500 pickup trucks. The Trailer Reverse Steering Control Module (TRSCM) may prevent the rearview image from displaying. As such, these vehicles fail to comply with the requirements of Federal Motor Vehicle Safety Standard number 111, "Rear Visibility."
Consequence & remedy
Consequence: A rearview camera that does not display an image reduces the driver's rear view, increasing the risk of a crash.
Remedy: Dealers will update the TRSCM software. Interim owner notification letters were mailed on January 19, 2022. Owner notification letters were mailed on February 22, 2022. Owners may contact FCA US, LLC customer service at 1-800-853-1403. FCA US, LLC's number for this recall is Y80. This recall was superseded by 23V-059.
Additional source detail variants (2)
Steering:steering Control Module
Chrysler (FCA US, LLC) is recalling certain 2021 Ram 1500 pickup trucks. The Trailer Reverse Steering Control Module (TRSCM) may prevent the rearview image from displaying. As such, these vehicles fail to comply with the requirements of Federal Motor Vehicle Safety Standard number 111, "Rear Visibility."
Consequence: A rearview camera that does not display an image reduces the driver's rear view, increasing the risk of a crash.
Remedy: Dealers will update the TRSCM software. Interim owner notification letters were mailed on January 19, 2022. Owner notification letters were mailed on February 22, 2022. Owners may contact FCA US, LLC customer service at 1-800-853-1403. FCA US, LLC's number for this recall is Y80. This recall was superseded by 23V-059.
Back Over Prevention:display Function
Chrysler (FCA US, LLC) is recalling certain 2021 Ram 1500 pickup trucks. The Trailer Reverse Steering Control Module (TRSCM) may prevent the rearview image from displaying. As such, these vehicles fail to comply with the requirements of Federal Motor Vehicle Safety Standard number 111, "Rear Visibility."
Consequence: A rearview camera that does not display an image reduces the driver's rear view, increasing the risk of a crash.
Remedy: Dealers will update the TRSCM software. Interim owner notification letters were mailed on January 19, 2022. Owner notification letters were mailed on February 22, 2022. Owners may contact FCA US, LLC customer service at 1-800-853-1403. FCA US, LLC's number for this recall is Y80. This recall was superseded by 23V-059.
21V698000 · Tires:temporary/emergency Spare Tire
Sep 9, 2021
Chrysler (FCA US, LLC) is recalling certain 2021 Ram 1500 vehicles. The incorrect-size spare tire may have been installed, which does not match the tire size and inflation pressure information on the tire placard. As such, these vehicles fail to comply with the requirements of Federal Motor Vehicle Safety Standard number 110, "Tire Selection And Rims."
Consequence & remedy
Consequence: A driver that relies on the incorrect spare tire inflation pressure on the tire placard label may inflate the spare tire incorrectly, increasing the risk of a crash.
Remedy: Dealers will replace the spare tire assembly, free of charge. The owner notification letter was mailed on September 9, 2021. Owners may contact FCA US LLC customer service at 1-800-853-1403. FCA US LLC's number for this recall is Y62.
21V438000 · Back Over Prevention:display Function
Jun 10, 2021
Chrysler (FCA US, LLC) is recalling certain 2021 Ram 1500 vehicles equipped with a trailer reverse steering module (TRSCM). The rearview camera image may not display. As such, these vehicles fail to comply with the requirements of Federal Motor Vehicle Safety Standard number 111, "Rear Visibility."
Consequence & remedy
Consequence: A rearview camera that does not display an image reduces the driver's rear view, increasing the risk of a crash or injury.
Remedy: Dealers will update the TRSCM software, free of charge. Owner notification letters were mailed June 24, 2021. Owners may contact FCA US, LLC customer service at 1-800-853-1403. FCA, US, LLC's number for this recall is Y30. This recall was superseded by recall number 21V-918.
21V037000 · Service Brakes, Hydraulic:foundation Components:master Cylinder
Feb 1, 2021
Chrysler (FCA US, LLC) is recalling certain 2020-2021 Ram 1500 Classic SLT trucks. Certain vehicles were built without the retaining clip that secures the master cylinder push rod to the brake pedal, which can cause the brake pedal to separate from the brake system.
Consequence & remedy
Consequence: A separated brake pedal can result in the driver being unable to apply the service brakes, increasing the risk of a crash.
Remedy: Owners are advised to not drive their vehicles until they receive instructions on the inspection and repair, as necessary. FCA US will notify owners, and dealers will inspect and install the push rod clip, free of charge. The recall began February 9, 2021. Owners may contact FCA US customer service at 1-800-853-1403. FCA US number for this recall is Y04.
Model-level recall history does not show whether a particular VIN is affected or has received a repair. Check a VIN with NHTSA ↗
NHTSA investigations
1EA23001 · High Pressure Fuel Pump Failure
Opened Mar 17, 2023 · No close date supplied
Status: open (inferred from source dates) · Fuel System, Diesel:delivery:fuel Pump
The Office of Defects Investigation (ODI) opened PE21-021 on October 14, 2021, to investigate incidents alleging a stall/loss of motive power as a result of high-pressure fuel pump failures in certain model year (MY) 2019-2020 Ram 2500, 3500, 4500, and 5500 heavy duty trucks equipped with 6.7L Cummins turbodiesel engines. During the investigation, ODI sought to determine if the related defect allegation was limited in scope to the recalled population. After review of information request response materials from both FCA and BMW, NHTSA determined that sufficient information to identify a comprehensive recall population could not be produced by FCA and BMW.During the investigation FCA filed recalls 22V406, 22E048, 22V767, and 22E087 which include vehicles not identified in the initial subject population by ODI. ODI also received recall 21V586, involving loss of motive power due to failed CP4 fuel pumps on certain BMW manufactured vehicles. An information request letter response received from BMW indicated that failed pumps on their vehicles were caused by an interaction between pump internal components and US market diesel fuel, leading to increased slip and eventual particle-generating wear surface. Additional work will be done to identify whether a similar root cause is associated with the FCA recalled population and if similar wear dynamics occur on pumps supplied to vehicle manufacturers other than those included in the recalled population.ODI has upgraded this investigation to an EA in order to 1) determine engineering specifications of internal pump components that are correlated with pump failure leading to loss of motive power or other safety related hazards, 2) identify vehicle populations equipped with alleged defective pump variants, 3) assess if vehicles equipped with alleged defective pump variants result in an unreasonable risk to motor vehicle safety and 4) gather and review any other relevant information related to high pressure fuel pump failure associated with the subject populations of recalls 21V586, 21V880, 21E094, 22V406, 22E048, 22V767, and 22E087.Review of the above information will allow NHTSA to confirm root cause and recall remedy viability, and identify and evaluate vehicle populations equipped with pump components that may pose an unreasonable risk to motor vehicle safety.The ODI reports cited above can be reviewed at: http://www-odi.nhtsa.dot.gov/owners/SearchNHTSAID using the following complaint identification numbers: 11257550, 11351441, 11361603, 11361616, 11365300, 11365426, 11365858, 11366401, 11372337, 11373793, 11374797, 11376793, 11377871, 11378173, 11384377, 11386063, 11387018, 11399710, 11402550, 11415339, 11418868, 11418870, 11427075, 11434276, 11436807, 11437226, 11437249, 11437273, 11437292, 11437294, 11437394, 11437399, 11437403, 11437405, 11437423, 11437528, 11437565, 11437579, 11437580, 11437590, 11437679, 11437744, 11437781, 11437842, 11437993, 11438006, 11438008, 11438121, 11438138, 11438155, 11438392, 11438629, 11439359, 11439879, 11440397, 11443030, 11446542, 11448163, 11453556, 11458918, 11460558, 11469337