2020 Jeep Gladiator · symptom sheet
Check engine light or misfire
- 28owner reports
- 60,000median miles
- 0involved a crash
Newest report Jun 10, 2026 · checked Oct 2, 2026
218 of the 483 complaints on this car are about the engine. 28 of those describe misfire.
Tick what matches of 28 reports
Misfire on other Gladiator years
No other Gladiator model year has enough reports of misfire for a sheet of its own. See every Gladiator year.
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 (4 reports).
Recalls and investigations
One recall on the engine covers the 2020 model year. A recall on the same system isn't always the same failure, so read the defect text.
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."
All 7 recalls on the 2020 Jeep Gladiator, with the owner complaints on each recalled system
NHTSA investigations into the engine on the Gladiator
Instrument panel cluster (ipc) failure. Open.
High pressure fuel pump failure. Open, led to recall 24V-957.
When it happens
The middle half of failures fell between 4,900 and 90,000 miles, from the 10 reports that gave a mileage.
Is this a known problem?
The manufacturer has sent NHTSA 25 service bulletins or notices for the 2020 Jeep Gladiator 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).
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)
EMISSION RECALL – NORTH AMERICA Check Engine/Malfunction Indicator Lamp Reference: 16C
21 more on the 2020 Jeep Gladiator page.
What owners wrote
“At 90k miles head gasket failed letting coolant in engine cylinders which was diagnosed and repaired by a Jeep dealer. At 130k miles engine light back on with dealer suggesting it is rocker arm/lifter failure with cylinders misfiring. At initial purchase of vehicle touchscreen would black out and restart. Dealer replaced with another touchscreen but issue still exists after warranty term.”
Filed May 5, 2026 · 90,000 miles
“The instrument panel cluster went out. I have no access to check engine lights, warnings, gas information, mileage, tire pressure or any critical information I need to drive safely.”
Filed Jul 10, 2025
Should you keep driving it?
This page can't tell you that. 0 of 28 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
- Infotainment, screen or backup camera fails 88 reports
- Steering wheel shakes or the "death wobble" 43 reports
- Suspension noise, struts or alignment 32 reports
- Battery dies or the car will not start 30 reports