Four problems related to check engine light on 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.
Catalytic converter failure on driver's side resulting in check engine light.
The contact owns a 2011 Infiniti Qx56. The contact stated that the check engine warning light illuminated upon start-up. The vehicle was taken to two separate independent mechanics to be diagnosed. The contact was informed of diagnostic trouble codes: p0420- p0430 catalyst system inefficiency. The vehicle was not repaired. A local dealer was not contacted however, the manufacturer was made aware of the failure, case number: 35634299. The approximate failure mileage was 78,000.
Takata recall-the check engine light come on shortly after the time chain was replaced which the codes indicated the cataylic converter needs to be replaced. The vehicle was stationary at my house. The time chain was replaced approximately 8 months ago.
The contact owns a 2011 Infiniti Qx56. The contact stated while driving 65 mph, the check engine warning light illuminated. The contact continued driving to his destination. The vehicle was taken to the local dealer southwest Infiniti (10495 southwest fwy, houston, TX 77074, (832) 742-1614) where it was diagnosed with needing the catalytic converter to be replaced. The vehicle was repaired however, 3 years later he experienced the failure. The vehicle was taken back to dealer, where it was diagnosed with needing the catalytic converter to be replaced for a second time. The vehicle was not repaired. The manufacturer was informed of the failure. The failure mileage was approximately 67,000.