Hi guy i have an 2004 infiniti g35 coupe, yesterday i was pulling out the battery to get to the fuse box and change the fuse for the Fog light because it blew out, and now after putting all together i get a service engine check light. I read the code and it said PCM Backup circuit Malfunction. Anybody here know how to fix this problem please let me know Thanks you so much.

 

Did u try disconnecting the battery for a while to reset the computer??

 

i will try that tomorrow, and let see if it work.