2012 Infiniti QX56: engine stalls while driving

Filed Mar 4, 2026 · Engine · 175,000 miles · SC

The contact owns a 2012 Infiniti QX56. The contact stated that while driving at 56 MPH, the vehicle slowed down and failed to respond as intended. An oil change was performed; however, the failure persisted. The contact stated that the high-pressure fuel pump was leaking, causing the timing chain to fail. The check engine warning light illuminated, and the failure progressed, causing the vehicle to stall. The vehicle was not diagnosed or repaired by a dealer or independent mechanic. The vehicle failed on the side of the road and was towed to the residence. The contact used an OBD scanner and retrieved DTC: P0021, P0011, and P0300. The manufacturer was contacted about the failure, and Customer Service Program Number: P6305. The VIN was provided, and the contact was informed that the vehicle was not covered under the campaign and that the campaign had expired. The failure mileage was approximately 175,000.

Filed Jun 15, 2021 · Engine · MS

My 2012 Infiniti QX56 has a loud rattling noise coming from the engine. This started around Oct 2020 and comes and go. It has got worse over the last month or so and has started stalling and acting like it doesn't want to go. A few times the car will start shaking while I'm driving. It has been checked out and codes for converter and timing chain are there. Engine light is on. I drive this car with my 2 children and am afraid of the safety issue. I know there is numerous others having these same 2 issues with my year and make of car. Spoke with Infiniti Corp. and they will not do anything about it because my VIN is not under the recall. However, the vehicles with this issue that have been repaired under the recall have the same engine and same issues that I'm having. I think all vehicles in 2012 regardless of VIN should be under the recall as I'm seeing so many with these issues.

Filed Jan 29, 2019 · Engine · 134,000 miles · TX

Tl* the contact owns a 2012 infiniti qx56. The contact stated that the vehicle stalled while attempting to drive and the service engine indicator illuminated. The vehicle was taken to austin infiniti (8140 burnet rd, austin, tx 78757) and the catalytic converters were replaced twice in one year. Two years later, the same failure occurred. The vehicle was taken to an independent mechanic who stated that the driver's side catalytic converter needed to be replaced. The manufacturer was not contacted. The vehicle was not repaired. The failure mileage was 134,000.

Filed Dec 22, 2018 · Fuel system · 105,000 miles · NY

The fuel rail pressure center malfunction is not working. Car stalls when driving - check engine light is on

Filed Mar 28, 2018 · Engine · 147,000 miles · PA

2012 infiniti qx56. Attorney representing consumer writes in regards to vehicle engine stalled and other mechanical issues while driving. *smd

Filed Apr 26, 2016 · Engine · 82,000 miles · OH

Infiniti qx56 has a ubiquitous issue with timing chain failures going out between 60k-80k miles. This problem is not only a very expensive repair ($3k to $5k), but is also a severe safety issue if timing chain were to fail on the roadway. Infiniti has mentioned a possible recall, but seems to stalling due to the massive expense that they would have to bare. I detected a problem at approximately 70k miles, when starting on cold mornings. My vehicle sounded like a screaming eagle for the first 5 minutes of operation. I eventually had a failure just over 80k miles (fortunately, while in the driveway). Per the service manager at my local infiniti dealer, they have known about the part defect which all too common on 2010-2012 qx56 models. Infiniti resolved the issue and devised a new timing chain for the 2013 model. I have attached a copy of my repair bill, along with the same diagnosis of many vehicles from the repairpal website. I would appreciate any thing you could do on my behalf and the thousands of other customers who have suffered the same fate.

Filed Nov 19, 2015 · Electrical · 48,000 miles · CA

Tl* the contact owns a 2012 infiniti qx56. While driving approximately 65 MPH, the vehicle stalled without warning. The vehicle was restarted after several attempts. The vehicle was taken to the dealer, but was not diagnosed or repaired. The manufacturer was notified of the failure. The failure mileage was 48,000.

Filed Apr 25, 2012 · Engine · 5,000 miles · CA

Tl* the contact owns a 2012 infiniti qx56. While driving 60 MPH, the contact noticed that the vehicle had suddenly stalled without warning. The vehicle was taken to the dealer, where the contact was informed that the failure could not be duplicated. The vehicle had not been repaired. The failure and current mileages were 5,000.