Infiniti QX56 fuel pump problems

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 Feb 3, 2022 · Engine · GA

The contact owns a 2012 Infiniti QX56. The contact stated that while driving at high speeds, the vehicle shook and then lost motive power. The vehicle was towed to the dealer and diagnosed with fuel pump failure. The dealer informed the contact that the fuel pump needed to be replaced. The vehicle was then towed to an independent mechanic and diagnosed with timing chain failure. The independent mechanic informed the contact that the engine needed to be replaced. The vehicle was not repaired. The manufacturer was made aware of the failure. The failure mileage was unknown.

Filed Mar 16, 2021 · Engine, Fuel system · 130 miles · TX

Had no prior issues, driving down the hwyat 65 miles per hr.. Car failed. Costed to side of road made it to repair shop and the fuel pump went out, which affected the timming chain and broke the teeth, which has affected the motor. This is a design defect that hundred other folks are having. I could have lost my life with this vehicle

Filed Jan 18, 2021 · Fuel system · 147,032 miles · NJ

While driving my 2011infiniti qx56 to work, the service engine light came on and the vehicle start losing power and shaking.after checking it I had codespoo21,poo87 and poo90. The codes are related to vvt solenoid and high pressure fuel pump.

Filed Sep 6, 2020 · Engine, Fuel system · 121,089 miles · CA

On june 1st 2020 I took my 2011 infiniti qx56 to the shop for having the code p0087. The shop told me that I should take it to the dealership because the problems the vehicle is having are recalled under voluntary safety recall campaign. When I called my local infiniti dealership they told me my VIN # doesn't doesn't show as recalled. They dealership provided me with the phone number of infiniti consumer affairs. I called infiniti affairs and told them about my vehicle they told me that they were sorry but my VIN doesn't show up on their system. The bottom line is that every single thing that I researched and find the wrong of the vehicle comes back with a voluntary recall. Like the fuel system, timing chain, vvt solenoids, high pressure fuel pump. I use vehicle in the city and highway.

Filed Jul 14, 2020 · Fuel system · 24,000 miles · PA

Was driving my vehicle and first noticed a drop in fuel economy. Later it was losing power and stalling. Gave me p0090 and p0087 codes. Happened in both driving and stationary positions. Turns out my high pressure fuel pump is bad.

Filed Mar 31, 2020 · Brakes, Engine · 96,000 miles · NC

Driving down highway 421 in wilkesboro, nc on a 45 MPH section of the highway, merged over into the turning lane to turn left across two lanes of traffic. Waited for a break in traffic, upon a break in traffic tried to accelerate to cross traffic, as vehicle started to accelerate it stalled in middle of road. Wife and children in car started screaming. Traffic nice enough not to run into us. Had car towed to local automotive repair shop. Found that this is a common problem for the 5.6 litter nissan/ infiniti engine. One of the timing gears for the left bank stopped rotating some how. This side of the engine timing system also powers the fuel pump so that you cannot even limp across the road on half the engine. It just stops right where you are. You have no steering no breaking and no propulsion. This is a dangerous situation and the manufacture should be held responsible for the design and lack of quality of the engine.

Filed Apr 22, 2019 · Electrical, Engine · 115,540 miles · NC

Was driving home, A/C was on, all lights was on, all of a suddenly lost of power to the engine and while going up hill, so I floor it so the vehicle so I can get past over the hill then I started to smell something through the vents like it was on fire coming from the engine bay so I pulled over and turned off the engine pop the hood but didn't see no fire, then when I tried to start the vehicle back up it wouldn't so I waited for few minutes and tried again, the vehicle started back up so I went on driving again but it didn't show any thing on the dash no check engine light at all. It done it again lose of power to the engine and I started smelling something burning like metal coming from the vents again lucky I was close to home when it done it again, I shut the vehicle off and put the scanner on it, it throw out 3 codes but it never showed up on the dash saying check engine light at all. For the 3 codes one was for fuel pump other was for 02 sensor and the other was ECM I believe, wish I wrote them all down.

Filed Oct 23, 2017 · Fuel system · GA

I was told the vehicle can not have recall performed because it had an aftermarket fuel pump. My dad gave me the vehicle before he past so I'm not sure if some one else has worked on vehicle. The vehicle is causing gas problems that are unsafe. I was told by the dealer to buy a new one put it in then have them do a recall. Please help.

Filed Jul 8, 2016 · Fuel system, Transmission · 102,000 miles · TN

Fuel leveling sensor is faulty in a large variety of infiniti cars, but there is not recall for my VIN. The car's fuel gauge goes up and down all the time and tells me I'm on empty when I'm not and never registers full even when it was just filled up. It can jump from reading 330 miles left to empty down to 299 and back up to 330 in just a few seconds. The diagnostic confirmed a problem, but they want over $1,000 to fix a known problem in many of their makes and models. This doesn't even touch on the timing chain issue that is faulty as well. Luckily, there is a recall for that one. How is the consumer protected against this type of faulty parts? Is there anything we can do? We have been told we need to replace the fuel pump.