Four problems related to catalytic convertor have been reported for the 2011 Infiniti QX56. The most recently reported issues are listed below. Please also check out the statistics and reliability analysis of the 2011 Infiniti QX56 based on all problems reported for the 2011 QX56.
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.
The service engine soon light came on, and I brought the vehicle to holmon Infiniti in mapleshade, NJ where I purchased the vehicle. The diagnosis was a bank 2 catalytic convertor failure. I had it replaced at a cost of $2,661. 79 on Thursday March 29, 2018. On Saturday March 31, 2018, the bank 1 catalytic convertor failed. Infiniti consumer affairs provided some assistance with the second repair. They paid for the parts and I paid the labor of $1,385. 63. Infiniti consumer affairs would not reimburse me for the parts for the first repair because "I already paid for it". Had I known about this apparently common problem, I would not have paid for the first one without contacting them first. It appears to be a known issue if they were willing to give me any assistance at all, and I would think that would be extended to repairs already paid for by the consumer.
The contact owns a 2011 Infiniti Qx56. While driving various speeds, the check engine warning indicator illuminated continuously. The vehicle was taken to sewell Infiniti of fort worth (5135 bryant irvin rd, fort worth, TX 76132) where it was diagnosed that the catalytic converter needed to be replaced. The vehicle was not repaired. The manufacturer was notified of the failure. The approximate failure mileage was 83,000.
The contact owns a 2011 Infiniti Qx56. After the vehicle was started, the service engine soon warning indicator illuminated. The vehicle was taken to a dealer where it was diagnosed that the catalytic converter needed to be replaced. The vehicle was not repaired. The manufacturer was not notified of the failure. The failure mileage was unknown.