Check Engine Light With Code P1421 on Infiniti QX56

Problem Description and Possible Solution

The Check Engine Light may illuminate with a code P1421 stored. Our technicians recommend  reprogramming the powertrain control module (PCM) with the latest software to correct this concern.

Problem Data
RepairPal Verified
Average mileage: (–)
1 model year affected: 2009
1 person reported this problem