I'M COMING WITH OBDII ERROR CODE P1065 ON A NISSAN ENGINE. HOW DO I TROUBLE-SHOOT THIS ONE?

Question

ERROR CODE READS PCM CONTROL MODULE BACKUP CIRCUIT...NOT SURE WHERE TO START LOOKING FOR PROBLEM

Answer 1

P1065 NISSAN - ECM Power Supply Circuit

Read More: https://www.autocodes.com/p1065_nissan.html

Try erasing the code first and check the car battery connections. If the code come back then you may have to replaced the ECM.