2019 Acura MDX Fuel system Problems

On [XXX], while traveling at highway speeds on [XXX], the vehicle suffered a sudden, complete loss of engine propulsion. The vehicle rapidly decelerated, refused to respond to accelerator input, and forced itself into a dangerous "Limp Mode" in live traffic, creating an immediate highway safety hazard. Multiple warning messages illuminated on the dashboard. The vehicle was towed to Mile High Acura under Repair Order #[XXX]. Diagnostic testing pulled stored Code P0087 for Low Fuel Pressure at the Fuel Rail. An inline fuel pressure gauge confirmed that the low-side fuel pressure was rapidly fluctuating between 55 and 64 PSI at idle. The dealership escalated the data to the Acura Corporate Tech Line (Ref #[XXX]), which reviewed the vehicle's onboard snapshot data and officially determined a terminal defect in the low-pressure fuel pump assembly, mandating the replacement of the low-side pump and both fuel relays. Dealership service records confirm that this vehicle previously had a low-pressure fuel pump recall performed in 2021 under NHTSA Campaign Number 21V-215 (Acura Code CAI). The sudden failure of this replacement component matches the exact failure conditions detailed in the subsequent NHTSA Campaign Number 23V-858 (Acura Codes KGC/KGD). In that expanded campaign, American Honda Motor Co. openly admitted to federal regulators that the early replacement "service parts" distributed and installed during the 21V-215 window were manufactured with the exact same defective, swelling density impellers prone to subsequent deformation and complete failure. Despite their own corporate Tech Line explicitly confirming that the root cause of this dangerous highway power loss was the low-pressure fuel pump—the exact component of the 21V-215 and 23V-858 safety recall campaigns—Acura Client Relations denied 100% safety remedy coverage. Acura refused to provide the technical basis for their denial in writing. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

NHTSA ID

11745700

Incident

May 31, 2026

Under normal driving conditions warning lights for "electric parking brake" and "emissions system problem" came on the dashboard and the 'brake' light began flashing. No change in performance. Auto parts store diagnostic indicated EVAP valve as the possible problem code, along with two other unrelated codes - none connected to brakes or emissions. The 12-volt battery tested strong. Drove another 100 miles with lights still on, but the 'brake' light would turn off after about 5 mins of highway driving/no braking. The next day the warning lights continued. After normal city driving I shut the car off, waited 30 seconds, pushed the start button twice (accessory mode) and held the brake pedal down while pulling up on the brake release button for 10 seconds. Started the car without any error messages.

NHTSA ID

11744197

Incident

Jun 12, 2026

I am reporting a recurring safety issue following the Acura rod bearing recall repair on my 2019 Acura MDX SH-AWD. The original recall resulted in catastrophic engine failure and Acura replaced the long block assembly. Since that repair, the vehicle has repeatedly failed and returned to the dealership multiple times for the same issue pattern. Symptoms include: * “Emissions System Problem” warning * SH-AWD, brake, and traction control warnings * strong raw gasoline odor * vehicle becoming undriveable/no-start Timeline: * Recall repair completed with long block replacement * Vehicle failed again the next day * Dealer repaired vehicle * Vehicle failed again about one month later * Dealer repaired vehicle again * Vehicle failed a third time about one week later during normal commuting The recurring failures are accompanied by a strong gasoline smell, creating concern about fire risk and vehicle safety. I regularly transport children in this vehicle and no longer have confidence in the safety or reliability of the recall repair. The dealership has continued repairing the vehicle and providing loaners, indicating the issue is related to the original recall repair, but the underlying problem has still not been resolved despite multiple repair attempts. I am submitting this report because the recall repair has not resulted in safe and reliable vehicle operation.

NHTSA ID

11736180

Incident

Feb 7, 2026

My vehicle is showing identical symptoms to those described in recall 21V-215/23V-858 related to the fuel pump. Although my VIN is not listed in the recall, I would like to verify whether my fuel pump is part of the defective batch, as it is failing in the same way (e.g., loss of power, engine shutting off, hard starting when cold, etc.). Or please confirm if my car symptoms are related to different campaigns.

NHTSA ID

11677204

Incident

May 29, 2020

The contact owns a 2019 Acura MDX. The contact stated that the vehicle shifted to park while driving at an undisclosed speed. The engine and EVAP system warning lights were illuminated. There was a leak from the Evaporative Emission Control (EVAP) system. The vehicle was previously taken to the local dealer for NHTSA Campaign Number: 23V858000 (Fuel System, Gasoline). The vehicle was repaired, but the failure recurred. The manufacturer was contacted, but no assistance was provided. The failure mileage was approximately 88,000.

NHTSA ID

11649460

Incident

Nov 1, 2024

Mileage

88,000 mi

The contact owns a 2019 Acura MDX. The contact stated that while driving at various undisclosed speeds, an abnormal sound could be heard coming from the engine and a fuel-burning odor leaked into the interior and exterior of the vehicle. The transmission jerked while driving. The failure occurred on several occasions. The contact received a notification of NHTSA Campaign Numbers: 23V858000 (FUEL SYSTEM, GASOLINE) and 23V751000 ( ENGINE AND ENGINE COOLING). However, the part to do the recall repair was not yet available. The vehicle was taken to an independent mechanic but was not diagnosed or repaired. The contact stated that the manufacturer had exceeded a reasonable amount of time for the recall repair. The manufacturer was not made aware of the failure. The failure mileage was approximately 60,000. VIN tool confirms parts not available.

NHTSA ID

11634814

Incident

Jan 22, 2024

Mileage

60,000 mi

The car is stalling on the highway.that very scary situation the dealer said they don’t have the parts to fix it. Also they said till the check light doesn’t come on they can’t fix it. I don’t know what to do

NHTSA ID

11627599

Incident

Nov 26, 2024

We received these recalls more than a year ago and after we called the Acura dealership they told us that there were not enough parts to fix the cars now and that they would give us a call when they had the parts, after two months we called them again and same statement, and same thing for 3 more times with the span of six months. today after more than a year I called again and they are saying no part is available! Since I am worried about safety I don't drive my car out of the city but it seems that Acura has no plan to address these recalls.

NHTSA ID

11626360

Incident

Nov 20, 2024

The contact owns a 2019 Acura MDX. The contact received notification of NHTSA Campaign Number: 23V858000 (FUEL SYSTEM, GASOLINE); however, the part to do the recall repair was unavailable. The local dealer was contacted, and it was confirmed that the part was not yet available. The contact stated that the manufacturer had exceeded a reasonable amount of time for the recall repair. The manufacturer was made aware of the issue. The contact had not experienced a failure. Parts distribution disconnect.

NHTSA ID

11626125

Incident

Nov 19, 2024

The contact owns a 2019 Acura MDX. The contact received notification of NHTSA Campaign Number: 23V858000 (Fuel System, Gasoline); however, the part to do the recall repair was not yet available. The contact stated while attempting to drive from a complete stop at a traffic light, the vehicle stalled, nearly causing a crash. Several unknown warning lights were illuminated. The local dealer was contacted. The vehicle was not diagnosed or repaired. The contact stated that the manufacturer had exceeded a reasonable amount of time for the recall repair. The manufacturer was not made aware of the failure. The failure mileage was approximately 90,000. Parts distribution disconnect.

NHTSA ID

11625945

Incident

Oct 15, 2024

Mileage

90,000 mi

In February 2024, received a recall for fuel pump module, which can result in prevent engine from starting, cause vehicle to lose driver power, or stall while driving. Can also result in failing emissions inspection. Acura reports that repair is not available until Fall 2024. In October 2024, while at a stoplight, auto idle-stop was engaged, and engine stalled and would not turn on. Vehicle needed to be turned off and then engine started at that time. A previous recall that affected auto idle stop was addressed in May 2023 where engine does not auto restart after entering auto idle stop. In April 2023 Acura provided a software update, however in October 2024 the engine stalled as mentioned above. Additionally, a local emissions test was performed and failed around April 2022, and passed a second time when performed a few weeks later. Even after experiencing symptoms of recall 23V-858, recall has not been able to be addressed. This vehicle was brought into Acura in November 2024 for an another recall (23V-751) and I was told that current unaddressed recall may be available within the following month but could not provide any further assistance. Engine stalling at a stoplight puts my family at risk, as well as others. If engine is stalling at a stoplight, engine may stall at other times, including while driving, increasing risk of accident. Recall has been undressed for almost 10 months.

NHTSA ID

11625723

Incident

Oct 12, 2024

There are two open recalls, and I have tried reaching out local dealer as well as Honda email, to get these repaired. However, I have been told that fix is not available. It has a year plus and I worry driving car with these issues ignored by Honda. Thanks.

NHTSA ID

11620696

Incident

Oct 18, 2024

Received a recall notice Feb 2024. It is now 9 months later and manufacturer has said they have NO ETA when parts will be available after multiple calls. They are vague with the issues. Told if I think I have the issue, I can bring my car in for diagnosis. If they don't find the problem I have to continue to wait AND they will charge a diagnostics fee for troubleshooting. I am concerned I have an unreliable vehicle that could fail at any time. I think 9 months is more than reasonable to have a recall fixed and replacement parts manufactured.

NHTSA ID

11618585

Incident

Feb 1, 2024

The contact owns a 2019 Acura MDX. The contact received notifications of NHTSA Campaign Numbers: 23V858000 (Fuel system, Gasoline) and 23V751000 (Engine and Engine Cooling); however, the parts to do the recall repairs were unavailable. The contact stated that the manufacturer had exceeded a reasonable amount of time for the recall repair. The manufacturer was made aware of the issue. The contact had not experienced a failure. VIN tool confirms parts not available.

NHTSA ID

11615983

Incident

Sep 23, 2024

The contact owns a 2019 Acura MDX. The contact received notification of NHTSA Campaign Number: 23V858000 (Fuel System, Gasoline); however, the part to do the recall repair was not yet available. The local dealer was contacted. The contact stated that the manufacturer had exceeded a reasonable amount of time for the recall repair. The manufacturer was not made aware of the issue. The contact had not experienced a failure. Parts distribution disconnect.

NHTSA ID

11615272

Incident

Sep 18, 2024

The contact owns a 2019 Acura MDX. The contact received notifications of NHTSA Campaign Numbers: 23V858000 (Fuel System, Gasoline) and 23V751000 (Engine and Engine Cooling); however, the parts to do the recall repairs were unavailable. The contact stated that the manufacturer had exceeded a reasonable amount of time for the recall repair. The contact was informed by the dealer that the vehicles for sale or trade were being prioritized before repairing other vehicles. The manufacturer was made aware of the issue. The contact had not experienced a failure. Parts distribution disconnect.

NHTSA ID

11615066

Incident

Nov 13, 2023

The contact owns a 2019 Acura MDX. The contact received notifications of NHTSA Campaign Numbers: 23V858000 (Fuel System, Gasoline) and 23V751000 (Engine and Engine Cooling); however, the parts to do the recall repairs were unavailable. The contact stated that the manufacturer had exceeded a reasonable amount of time for the recall repairs. The dealer was contacted. The manufacturer was not made aware of the issue. The contact had not experienced a failure. Parts distribution disconnect.

NHTSA ID

11611572

Incident

Nov 10, 2023

The contact owns a 2019 Acura MDX. The contact received notifications of NHTSA Campaign Numbers: 23V858000 (Fuel System, Gasoline) and 23V751000 (Engine and Engine Cooling) however, the parts to do the recall repairs were not yet available. The local dealer was contacted. The contact stated that the manufacturer had exceeded a reasonable amount of time for the recall repairs. The manufacturer was made aware of the issue. The contact had not experienced a failure. Parts distribution disconnect.

NHTSA ID

11604292

Incident

Jul 24, 2024

I was driving down the highway today at 70 mph and all the lights illuminated on my MDX. It began to struggle to keep speed and eventually shut down once I was on the service road. I was extremely scared and nervous that I was going to be involved in an accident or the car was going to blow up as it started bouncing up and down while I was still on the highway.

NHTSA ID

11604170

Incident

Jul 23, 2024

The contact owns a 2019 Acura MDX. The contact received notification of NHTSA Campaign Number: 23V858000 (Fuel System, Gasoline) however, the part to do the recall repair was not yet available. The contact stated that the manufacturer had exceeded a reasonable amount of time for the recall repair. The manufacturer was made aware of the issue. The contact had not experienced a failure. Parts distribution disconnect.

NHTSA ID

11593897

Incident

Dec 18, 2023

The contact owns a 2019 Acura MDX. The contact received notification of NHTSA Campaign Number: 23V858000 (Fuel system, Gasoline) however, the part to do the recall repair was not yet available. The local dealer was contacted. The contact stated that the manufacturer had exceeded a reasonable amount of time for the recall repair. The manufacturer was made aware of the issue. The contact had not experienced a failure. Parts distribution disconnect.

NHTSA ID

11593060

Incident

Jun 7, 2024

The contact owns a 2019 Acura MDX. The contact received notification of NHTSA Campaign Number: 23V858000 (Fuel System, Gasoline) however, the part to do the recall repair was not yet available. The local dealer was contacted. The contact stated that the manufacturer had exceeded a reasonable amount of time for the recall repair. The manufacturer was made aware of the issue. The contact had not experienced a failure. Parts distribution disconnect.

NHTSA ID

11593015

Incident

Jun 7, 2024

The contact owns a 2019 Acura MDX. The contact received notification of NHTSA Campaign Numbers: 23V858000 (Fuel System, Gasoline) and 23V751000 (Engine and Engine Cooling) however, the parts to do the recall repairs were not yet available. The local dealer and other unknown dealers were contacted. The contact stated that the manufacturer had exceeded a reasonable amount of time for the recall repair. The manufacturer was not made aware of the issue. The contact had not experienced a failure. Parts distribution disconnect.

NHTSA ID

11592991

Incident

Jun 7, 2024

The contact owns a 2019 Acura MDX. The contact received notification of NHTSA Campaign Number: 23V858000 (Fuel System, Gasoline) and 23V751000 (Engine and Engine Cooling) however, the parts to do the recall repairs were not yet available. The local dealer was contacted, and it was confirmed that parts were not yet available. The contact stated that the manufacturer had exceeded a reasonable amount of time for the recall repair. The manufacturer was not yet contacted. The contact stated while driving at various speeds, the vehicle failed to properly accelerate while depressing the accelerator pedal. The cause of the failure was not yet determined. The vehicle was not repaired. The failure mileage was 98,000. Parts distribution disconnect.

NHTSA ID

11592620

Incident

Mar 5, 2024

Mileage

98,000 mi

Two recalls outstanding from November 2023. Parts not available to fix the problems until April 2025.

NHTSA ID

11592501

Incident

Jun 3, 2024