2011 Infiniti QX56 problems

Filed Jul 28, 2026 · CA

The contact owns a 2011 Infiniti QX56. The contact received notification of the federal safety agency Campaign Number: 26V455000 (Equipment); however, the part to do the recall repair was not yet available. The contact was unable to rent the vehicle. 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.

Filed Jul 20, 2026 · Engine · NC

Need to know if there are recalls on the Q56 Infinite for the Catalytic Converter Failure. This truck had 2 and this is the second one that seems to be faulty and the truck only had 162000 miles The 1st one faulted at 151000 2024 The Infinite 2011 Q56 has been known for faulty Catalytic Converter Failure and nothing was done to recall and fix. The truck had 2 Catalytic Converters, the 1st one went out in 2024 @ 152000 miles, now it looks like my engine light is back on with error code P0420 Converter malfunction. I searched internet and it was noted that 2011 have had enormous reports about this issue. This doesn’t make since there is no recall when it is noted that the 2011 Q56 had history of faulty Catalytic Converter Failure. This cost to replace and repair is enormous and this type of part replacement repair should not be happening at 152000-162000 miles. This needs to be investigated and recall issued immediately.

Filed Aug 5, 2024 · Suspension · NJ

A subframe is a key structural component of every car. As such, it stands to reason that it should last as long as the car itself. Doing much research on this model suspension and subframes become rusted as I didn’t know this when purchasing making it very unsafe . I experienced being involved in almost 2 accidents. Very dangerous. Subframe split in half and suspension. Something needs to be done as a lot of people are going thru this issue and Infiniti slogan claims “new horizons” by no means new horizon going to heaven by driving their vehicles.

Filed Jun 25, 2023 · Engine · TX

Unknown. Timing chain issue. When car is started it makes a noise for about 10 min then goes away

Filed Jun 2, 2023 · Engine, Fuel system · MS

Catalytic Converter, A/F Sensor failed on the interstate when I was driving with kids in the car. Took vehicle to the nearest dealer only to be told that this is a known problem with these vehicles and it was going to cost me $3,100 to repair.

Filed Mar 6, 2023 · Suspension · NY

The rear controls arms and cradle mount were riddled with severe fissures, causing car to sway dramatically. The level of component failure posed a severe safety risk to me. My mechanic was shocked by the amount of failure to these major rear suspension components. I have included photos and receipts for repairs.

Filed Mar 12, 2022 · Engine · VA

I'm currently dealing with the timing chain nightmare so many others have had and are having. Of course just as most of the others I'm out of warranty and really frustrated that infiniti hasn't stepped up to the plate to address the problem properly as opposed to renaming the qx56 to qx 80 to save themselves, leaving consumers scrambling with expensive time consuming fixes to a known defect on their part. Where's the accountability on their part, do a certain number of people have to die or be injured before the consumers are provided with the proper assistance? Who really looks out for us? A recall was done in 2016 obviously they need to expand the VIN number

Filed Feb 22, 2022 · Fuel system · 148,000 miles · FL

The contact owns a 2011 Infiniti QX56. The contact stated while driving approximately 25 MPH, the vehicle began to shake and inadvertently stalled. The check engine warning light was illuminated. The vehicle was taken to a local dealer where it was diagnosed with needing the high-pressure fuel tank replaced. The vehicle was repaired however, the failure persisted. The manufacturer was not informed of the failure. The failure mileage was approximately 148,000.

Filed Jan 18, 2022 · Engine · 140,000 miles · TX

The contact owns a 2011 Infiniti QX56. The contact stated while driving at various speeds, the vehicle would vibrate violently. Additionally, the vehicle had experienced intermittent power loss and had gone into limp mode. The contact stated that the check engine warning light was illuminated. The vehicle was taken to a local mechanic where it was diagnosed with needing the timing chain replaced. The vehicle was not repaired. The manufacturer was informed of the failure and informed the contact that the VIN was not included in a recall. The failure mileage was approximately 140,000.

Filed May 7, 2021 · Engine · 161,798 miles · SC

Code ref tsbno. 16-015 timing chains replacement manufacturer defect and recall