2021 Ram 1500 · symptom sheet
Check engine light or misfire
- 32owner reports
- 27,803median miles
- 0involved a crash
Newest report Sep 8, 2026 · checked Oct 2, 2026
420 of the 679 complaints on this car are about the engine. 32 of those describe misfire.
Tick what matches of 32 reports
Misfire on other 1500 years
Report counts are for each model year on its own, so a newer car has had less time to collect them. Model years with too few reports of it for a sheet: 2023, 2024, 2026.
What this problem usually is
These reports start with the check engine light. Many describe the engine running rough or shaking at idle, a P0300-series code, or a catalytic converter code. A worrying number say the light was flashing. Owners often list ignition coils or spark plugs already replaced, and the light coming back afterward.
What got replaced
Few of these reports name the part that was replaced.
Recalls and investigations
One recall on the engine covers the 2021 model year. A recall on the same system isn't always the same failure, so read the defect text.
The high pressure fuel pump (HPFP) may fail, causing an engine stall.
All 15 recalls on the 2021 Ram 1500, with the owner complaints on each recalled system
NHTSA investigations into the engine on the 1500
Engine stall with intermittent restart. Open.
High pressure fuel pump failure. Open, led to recall 24V-957.
Software security vulnerability. Closed jan 5, 2016, led to recall 15V-508.
Totally integrated power module failure. Closed jul 24, 2015.
When it happens
The middle half of failures fell between 14,800 and 35,000 miles, from the 9 reports that gave a mileage.
Is this a known problem?
The manufacturer has sent NHTSA 52 service bulletins or notices for the 2021 Ram 1500 that deal with this problem. Newest first.
Federal rules make a manufacturer send NHTSA a copy of any notice about a defect that goes to more than one dealer or owner. Most of these are service bulletins, the repair instructions manufacturers send to dealers. NHTSA generally leaves safety recall bulletins out of this file, and recalls are listed separately.
Fuel Delivery Module Before replacing the fuel module for DTCs P0461 and P062A and other not start, long crank, fuel gauge accuracy and drivability issues, the technician should disconnect the electrical connector at the pump and perform a visual inspection ...
Check Engine Light (CEL) Illuminated with Diagnostic Trouble Code (DTC) P0106 Manifold Absolute Pressure Sensor Performance Setting In The Powertrain Control Module (PCM)
Camshaft cap bolts within the cylinder head assembly may cause damage to other components. DO NOT replace entire long block when only left OR right cylinder heads need to be replaced.
Flash: Powertrain Control Module (PCM) Updates Customers must experience a Malfunction Indicator Lamp (MIL) illumination and the vehicle must SYMPTOM: exhibit/set one or more of the following Diagnostic Trouble Codes (DTCs): ● **P0111-00 - Intake Air ...
48 more on the 2021 Ram 1500 page.
What owners wrote
“Recently this vehicle has triggered a check engine light. Upon further examination the code was related to an ignition #3. (CODES: P020C, PO1DO).”
Filed Jul 28, 2026
“At any rate of speed the vehicle stalls and looses power with no warning. No check engine lights or any indicator comes on until the vehicle is already in stall position.”
Filed Mar 6, 2023
“vehicle stalled and shut off while merging into traffic. Dash lit up and ebrake engaged. No check engine light after incident.Extremely unsafe and could have caused an accident on coming traffic had to swerve out the way to avoid an accident. No prior warnings and has happened twice now.”
Filed Dec 9, 2022
“While driving the MIL chimed , check engine light is active along with low battery gauge illumination and low battery warning light , in park vehicle idling is erratic in drive or reverse idle is erratic also with spurts of motion, no active or stored codes are present but MIL is active”
Filed Dec 29, 2021
Should you keep driving it?
This page can't tell you that. 0 of 32 reports involved a crash. Owners who file are the ones who had a bad experience, and nobody checks their reports. If the problem affects steering, braking, power or a fire risk, treat it as a safety fault and have it inspected before a long or high-speed drive.
File your own report with NHTSA. Complaint counts are how a problem gets an investigation. How reports land on this sheet.
Guide Which lights mean pull over now? Warning lights by color and urgency
Other problems on this car
- Engine stalls or loses power while driving 199 reports
- Brakes grind, pulse or wear early 73 reports
- Infotainment, screen or backup camera fails 58 reports
- Battery dies or the car will not start 42 reports
- Brakes on its own (automatic emergency braking) 29 reports
- Fuel pump failure 27 reports
- Airbag warning light or recall 27 reports