CORE – HEATER
full bulletin at NHTSA ↗2019 Jeep Wrangler engine problems
severe Owners of the 2019 Jeep Wrangler have filed 14 NHTSA complaints about the engine at roughly $3,100 to repair (U.S. federal records, as of July 2026). Source: NHTSA Office of Defects Investigation. See engine across all vehicles →
Complaints
14
Recalls
0
Avg fix
$3,100
| Model year | engine complaints |
|---|---|
| 2015 Wrangler | 85 |
| 2016 Wrangler | 54 |
| 2017 Wrangler | 44 |
| 2018 Wrangler | 45 |
| 2019 Wrangler (this page) | 14 |
| 2020 Wrangler | 29 |
| 2021 Wrangler | 53 |
| 2022 Wrangler | 21 |
| 2023 Wrangler | 18 |
2fires
1injury
What stands out
Of the 19 model years of Jeep Wrangler we track for engine problems, this one has the fewest owner complaints on file (14).
Is there a fix? Manufacturer service bulletins
The manufacturer has issued service bulletins covering engine on this vehicle — documented repair instructions, service campaigns, or warranty extensions sent to dealers. A TSB isn't a recall (it's not a free safety remedy), but it's the manufacturer acknowledging the issue and how to fix it.
CORE – HEATER
full bulletin at NHTSA ↗THROTTLE BODY – NONE
full bulletin at NHTSA ↗THROTTLE BODY – NONE
full bulletin at NHTSA ↗Flash: Powertrain Control Module (PCM) Updates Customers must experience a Malfunction Indicator Lamp (MIL) illumination and the vehicle must exhibit/set one or more of the following Diagnostic Trouble Codes (DTCs): ● **P0420 - Catalyst System Efficiency Below Threshold Bank 1. ● P0430 - Catalyst System Efficiency Below Threshold Bank 2.** ● P0456 - EVAP System Small Leak. Customers may also comment on one or more of the following: ● **Vehicle fails emissions inspection testing.** ● Pinging/detonation sound from the engine after warm up at 1000-1500 RPM at low speed. (EMEA and APAC Only). ● The vehicle stalls at low speeds and/or coming to a stop This bulletin involves reprogramming the PCM
full bulletin at NHTSA ↗Source: NHTSA manufacturer communications. Bring the bulletin number to your dealer or shop.
The failure pattern owners describe
Owners of 2019 Wranglers report a range of engine problems. Several describe coolant leaks tied to loose inlet tube fasteners—a known issue documented in NHTSA Bulletin 07-001-20 REV. A from April 2020, which applies to 2.0L turbo engines built before November 30, 2019. These leaks drain reservoirs and trigger overheating warnings while driving.
Others report catastrophic engine failures at relatively low mileage. One owner at 21,421 miles experienced high RPM revving on cold start, hard starting, and stalling; the dealer eventually determined full engine replacement was needed. Another at 61,000 miles experienced misfire, backfire, and coolant intrusion into the combustion chamber, destroying the head gasket and requiring engine replacement. A third owner at an undisclosed mileage reported sudden engine seizure and piston failure with no prior check engine light.
Some complaints involve mysterious no-start conditions with no warning lights: one vehicle failed to start in tow mode at 17,000 miles, and another lost all power at 70 MPH and would not restart at 70,000 miles. A dealer could not determine the cause of either failure.
One owner reported metal shards ejected from the engine at 50,000 miles during aggressive revving—tied to NHTSA Campaign 23V116000, though repair parts had not been developed.
Finally, one owner reported excessive cooling fan noise in hot weather with A/C on, despite a TSB (18-041-18 REV B) addressing the condition; the dealer claimed the owner's vehicle fell outside TSB coverage.
Same Jeep Wrangler engine reports on nearby years: 2016 · 2017 · 2018 · 2020 · 2021
Failure modes owners describe
Coolant Inlet Tube Fastener Loosening & Coolant Leak
Coolant inlet tube fasteners become loose, causing coolant to leak from the engine. NHTSA Bulletin 07-001-20 REV. A (April 9, 2020) documents this for 2.0L turbo engines built before November 30, 2019. The loose fasteners allow coolant to escape, leading to reservoir depletion and engine overheating.
When: Before November 30, 2019 build date; complaint #1 occurred when exiting covered parking
Symptoms owners cite: Coolant reservoir empty or low; Dry coolant visible around engine; Engine overheating warning; Engine fan running continuously after parking
Repairs/costs cited: NHTSA Bulletin 07-001-20 REV. A specifies removal of coolant inlet tube fasteners, thread cleaning, application of Thread-Loc, and reinstallation at 11 N·m (8 ft. lbs.) torque
Recalls/TSBs owners mention: NHTSA Bulletin 07-001-20 REV. A issued April 9, 2020; no formal recall at time of complaint #1
Water Pump Coolant Leak
Coolant leaks from the water pump area, causing loss of coolant and engine temperature rise. Owner in complaint #6 observed coolant pooling around the water pump after temperature gauge rose.
When: Mileage unknown; complaint at undisclosed mileage
Symptoms owners cite: Water temperature gauge rises above normal; Temperature gauge fails to return to normal; Third reservoir tank empty; Visible coolant leak around water pump
Repairs/costs cited: Not repaired at time of complaint
Engine Misfire, Backfire & Head Gasket/Coolant Intrusion Failure
Engine misfire during driving followed by exhaust backfire. Coolant intrusion into cylinder #3 combustion chamber caused head gasket failure and catastrophic internal damage, leading to engine overheating and inability to restart. Owners cite this as a failure mode requiring engine replacement.
When: 61,000 miles
Symptoms owners cite: Engine misfire during driving; Backfire from exhaust system; Engine overheating; Vehicle fails to restart after shutdown; Burning smell from head gasket area
Repairs/costs cited: Engine replacement required; repair pending at independent mechanic at time of complaint #5
Metal Shards & Engine Damage at High RPM
At 75 MPH, engine revved aggressively with abnormally loud noise and metal shards ejected onto roadway, indicating internal mechanical damage or bearing failure. Vehicle towed; recall campaign 23V116000 (Power Train) issued but parts not yet developed.
When: 50,000 miles
Symptoms owners cite: Rapid unintended engine rev-up; Abnormally loud engine noise; Metal debris ejected from vehicle
Repairs/costs cited: Not diagnosed or repaired; waiting for recall parts
Recalls/TSBs owners mention: NHTSA Campaign Number 23V116000 (Power Train); parts for repair not yet developed at time of complaint
Engine Seizing & Piston Blowout
Engine seized without prior warning, causing piston failure. Owner reported no audible symptoms, no oil leak visible, no check engine light illumination before sudden failure during highway driving. Steering wheel and shifter locked due to loss of power.
When: No specific mileage provided; occurred suddenly during driving
Symptoms owners cite: Multiple warning lights blinking simultaneously; Auto start/stop system flashing 'auto start disabled'; Vehicle dies gradually during highway driving; Engine seizure with piston failure; Steering wheel locked; Shifter immobilized; Engine cranks but does not start; No prior check engine light
Repairs/costs cited: Engine required replacement
Loss of Motive Power & No-Start Condition
Vehicle lost power while driving at highway speed with no warning illumination. Engine failed to restart after pulling to shoulder. Dealer could not determine cause and vehicle remained unrepaired.
When: 70,000 miles
Symptoms owners cite: Sudden loss of motive power at 60 MPH; Vehicle fails to restart; No warning lights illuminated before failure
Repairs/costs cited: Not repaired; cause undetermined by dealer
Recalls/TSBs owners mention: Manufacturer referred owner to NHTSA Hotline
Excessive Cooling Fan Noise
Cooling fan produces excessive noise when A/C is activated during hot ambient temperatures. NHTSA TSB 18-041-18 REV B documents this as a known condition, but some vehicles are excluded from the TSB coverage, and dealers report the noise as normal despite the existence of a technical service bulletin.
When: Occurs only when outside temperature is high and A/C is on
Symptoms owners cite: Excessive cooling fan noise when A/C engaged in hot conditions
Recalls/TSBs owners mention: TSB 18-041-18 REV B exists; however, dealer stated owner's vehicle was not part of TSB coverage and noise was normal
Check Engine Light & Stop/Start System Warning at Very Low Mileage
Check engine light and stop/start system warning illuminated within first 88 miles of ownership (new vehicle). Dealer drive-cycled vehicle (15+ miles) but could not identify or repair the underlying issue. Warning remained present after dealer evaluation.
When: 88 miles on odometer (2-3 days after purchase)
Symptoms owners cite: Check engine light illumination; Stop/start system warning with explanation icon
Repairs/costs cited: No repairs performed; dealer unable to diagnose despite 15+ miles of drive cycling
High RPM Revving & Stalling/Engine Replacement
Vehicle revved to high RPM on startup, occurring intermittently. Then progressed to hard starting and stalling symptoms. After failed starter replacement, dealer determined engine replacement was necessary. Suggests internal engine failure rather than electrical starter issue.
When: 21,421 miles
Symptoms owners cite: Engine revs to high RPM when started; Intermittent condition initially; Hard starting and tendency to stall; Stalling with shaking/vibration; Engine replacement deemed necessary
Repairs/costs cited: Starter replaced initially but issue worsened; engine replacement required
Vehicle Won't Start in Tow Mode
Vehicle would not start when placed in tow mode at low mileage. No warning light illuminated prior to failure. Dealer unable to diagnose or repair.
When: 17,000 miles
Symptoms owners cite: Vehicle will not start in tow mode; No warning light illumination
Repairs/costs cited: Not diagnosed or repaired
Recalls/TSBs owners mention: Manufacturer referred owner to NHTSA for assistance
Synthesized from 14 NHTSA owner complaints — unverified consumer allegations, summarized for patterns. The verbatim filings appear below.
What owners are reporting 0 most recent
Had engine trouble with your 2019 Jeep Wrangler?
File a complaint with NHTSA → It's free, official, and how every report above got here — owner filings are the federal safety record this page is built on.
Common questions
How serious is the engine problem on the 2019 Jeep Wrangler?
It's a meaningful issue. 14 complaints have been filed and the failure mode causes operational problems for owners. Repairs average $3,100.
At what mileage does the engine typically fail?
Based on the 14 complaints filed, engine issues most often appear around 52,600 miles. Some report problems earlier; some make it well past 150,000 with no symptoms. Maintenance habits matter — vehicles that received timely fluid services and were not regularly overworked tend to last longer.
What does it cost to fix?
Independent shops typically charge around $3,100 for engine repairs on this vehicle. Dealer pricing tends to run 20-40% higher. The exact figure depends on the specific failure mode, parts availability, and your local labor rates. If you're outside factory warranty, an extended service contract often covers this category.
Are there any recalls related to engine?
No active recalls currently cover engine issues on this vehicle. The complaints filed represent owner-reported failures that haven't risen to the level of a manufacturer-issued recall — but they're still worth knowing about before you buy or budget for repairs.
Related
Complaint and recall data sourced from the National Highway Traffic Safety Administration (NHTSA)
public records database. Verify the raw federal record at
nhtsa.gov/vehicle/2019/Jeep/Wrangler.
Severity ratings are derived from reported crashes, fires, injuries, and fatalities. Repair cost estimates are
independent-shop national averages and may differ in your area. Some links on this page are affiliate links.