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.
2012 Infiniti QX56: fuel pump failure
5 of the 57 complaints about the 2012 Infiniti QX56 describe fuel pump failure.
- owner complaints
- 5
- of this car's complaints
- 9%
- recalls
- 1
Fuel pump failure by model year
- 20131
- 20125
- 20114
- 20061
- 20052
What owners say
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.
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
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.
The infiniti qx56 has a known issue with the timing chain on the side that drives the fuel pump. The chain stretches and begins to rub metal against metal. The cost to repair is 4000 - 5000 dollars and if you do not repair you run the risk of ruining the motor and that is 17,000. I was told by the infiniti mechanic it is a known issue and he could repair them in his sleep and the new chains are "heaver duty". Infiniti says it is not a common problem so they will not repair it out of warranty. See the attached web site. Just this one site has over 70 people with this issue. Http://repairpal.com/abnormal-noise-from-timing-chain-area-266 at 4000 to 5000 to fix that is almost 400000 in repairs from just this one site. If it is not an issue I wonder why the new timing chains are heavier. These are not cheap vehicles and infiniti should stand behind their product. If they will replace it under warranty then it is not normal wear. I could not get infiniti to tell me how many timing chains they have sold and / or how many repairs have been done across the us both in and out of warranty, maybe they will respond to you. If you google infiniti qx 56 timing chain issue, you will see it is not an isolated event.
Related recalls
Fuel system, gasoline
- What is wrong
- Nissan North America, Inc. (Nissan) is recalling certain model year 2012-2014 Nissan Juke, 2012-2013 Infiniti M56, QX56, and 2014-2015 Infiniti Q70 (V8 engine vehicles only), and QX80 vehicles. The fuel pressure sensors may not have been sufficiently tightened during production. As a result, the fuel pressure sensor may loosen with vehicle usage and cause a fuel leak.
- Risk
- A fuel leak in the presence of an ignition source could cause a vehicle fire.
- Remedy
- Nissan will notify owners, and dealers will re-torque the fuel pressure sensors free of charge. The recall began on January 25, 2015. Owners may contact Nissan customer service at 1‑800‑647‑7261.
Recall number 14V683000 · Recall details
Questions about the 2012 Infiniti QX56 fuel pump
Is fuel pump failure a common problem on the 2012 Infiniti QX56?
5 of 57 owner complaints about the 2012 Infiniti QX56 (9%) mention fuel pump failure. The model year with the most reports is 2012.
Is there a recall or service bulletin for this on the 2012 Infiniti QX56?
There is 1 recall and 0 service bulletins for the same area of the car. Check them below with your VIN.
Other symptoms on the 2012 Infiniti QX56
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