I also have p1065 code too.
For the P0084 code the most likely cause of the problem is the Exhaust Valve Timing Control Magnet Retarder, which is located on the front of the engine.
There is no information in the service manual for the P1065 code, please double check number.
P0084 INFINITI - Exhaust Valve Timing Control Magnet Retarder Circuit Bank 2 Read more: https://www.autocodes.com/p0084_infiniti.html
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