2021 Jeep Wrangler · symptom sheet
Check engine light or misfire
- 64owner reports
- 21,000median miles
- 1involved a crash
Newest report Sep 28, 2026 · checked Oct 2, 2026
470 of the 940 complaints on this car are about the engine. 64 of those describe misfire.
Tick what matches of 64 reports
Misfire on other Wrangler 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: 2016, 2017, 2020, 2023, 2025, 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
Owners who name the part that was replaced mention the sensor (6 reports).
Recalls and investigations
6 recalls on the engine cover the 2021 model year. A recall on the same system isn't always the same failure, so read the defect text.
The high voltage battery may fail internally and lead to a vehicle fire while parked or driving.
The instrument panel cluster may experience an internal short circuit and fail. As such, these vehicles fail to comply with the requirements of Federal Motor Vehicle Safety Standard number 101, "Controls and Displays."
The high voltage battery may fail internally and lead to a vehicle fire while parked or driving.
The high pressure fuel pump (HPFP) may fail.
A loss of communication may cause an engine shutdown.
The high pressure fuel pump (HPFP) may fail, causing an engine stall.
All 15 recalls on the 2021 Jeep Wrangler, with the owner complaints on each recalled system
NHTSA investigations into the engine on the Wrangler
Instrument panel cluster (ipc) failure. Open.
Loss of motive power. Open.
High pressure fuel pump failure. Open, led to recall 24V-957.
Pedestrian alert sounds. Closed aug 7, 2023, led to recall 22V-063.
Totally integrated power module failure. Closed jul 24, 2015.
Skid plate debris fires. Closed aug 7, 2012, led to recall 12V-216.
Fuel spill during refueling. Closed feb 16, 2011.
Engine stalling & electric power loss. Closed aug 2, 2007, led to recall 07V-291.
Instrument panel ground screw. Closed may 30, 2000, led to recall 99V-117.
Fuel leakage. Closed jun 30, 1998, led to recall 94V-106.
When it happens
The middle half of failures fell between 6,000 and 33,000 miles, from the 14 reports that gave a mileage.
Is this a known problem?
The manufacturer has sent NHTSA 63 service bulletins or notices for the 2021 Jeep Wrangler 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.
EMISSION RECALL – NORTH AMERICA Check Engine/Malfunction Indicator Lamp 16C The instrument panel cluster on about 32,587 of the above vehicles may have an inoperable check engine/malfunction indicator lamp (CEL/MIL).
Check Engine Light (CEL) Illuminated with Diagnostic Trouble Code (DTC) P0106 Manifold Absolute Pressure Sensor Performance Setting In The Powertrain Control Module (PCM)
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 ...
Emissions Recall 16C - Check Engine/Malfunction Indicator Lamp - Dealer Notification (Revision 2)
59 more on the 2021 Jeep Wrangler page.
What owners wrote
“March of 2023. Vehicle started hesitating and skipping. P0001 was logged. Dealership found terminals to connector to fuel pressure regulator were not crimped properly and loose. Repair was made. Aug 2023. Symptom have resurfaced this time logging code and shutting off while accelerating through an intersection. Logged code again P0001 Fuel Volume Regulator Control Circuit/Open.”
Filed Aug 17, 2023
“Cylinder head failure caused engine to leak engine oil. Ultimately FCA was able to repair the defective upon replacing a cylinder and head gasket multiple times. The true cause of the leak was never determined as the replaced head did not appear defective. This is being reported to NHTSA due to numerous defects and safety concerns that have arisen with this vehicle.”
Filed May 2, 2022
“Pulled out of parking lot and into street. Several different warnings came on and the vehicle stopped on its on and became totally unresponsive in the middle of the street. Warnings included E-drive charging fault, check engine, shift error, among many others. Car push button would not allow the car to turn off.”
Filed Jul 25, 2021
Should you keep driving it?
This page can't tell you that. 1 of 64 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
- Steering wheel shakes or the "death wobble" 182 reports
- Suspension noise, struts or alignment 180 reports
- Engine stalls or loses power while driving 149 reports
- Battery dies or the car will not start 115 reports
- Hybrid or EV system warning, loss of power 87 reports
- Infotainment, screen or backup camera fails 52 reports
- Multiple warning lights come on at once 34 reports
- Engine overheats or leaks coolant 30 reports
- Power steering cuts out or goes heavy 27 reports
- Brakes grind, pulse or wear early 27 reports
- Wheel bearing, tires or wheels 27 reports
- Vehicle fire 25 reports