Question about Nissan Maxima
Code 51 is an injector circuit fault, not a lean condition. Check the injector wiring and do an ohms test on the injectors with a DVOM.
Posted on Sep 23, 2009
Okay I have the 1991 Nissan Maxima now I spent four days with different auto electricians after the check engine light intermittently went on then finally stayed on. They were talking injectors, crank angle, MAF etc and dididn't fix it. So I pulled out the ECU which is located on the Australian drivers side centre console nearest the firewall, pull off the panel undo two screws disconnect the plugs and pull it out on the top on a sticker will be a number mine was 73 plus a part number on the same sticker, I rang Nizzpro on the gold coast and got the same one for the J30. I put it in and voila the car started engine light off. You then have to clean or change all the gunk off the spark plugs from the limp mode put in some ejector cleaner in a tank of high octane fuel run it up the highway and it is fixed. My point is that it is more than likely the actual ECU at fault and has for reading the codes forget it there are so many fault codes retained by the ECU over a period time you'll never work it out and no one has the old equipment to read that ECU. Hope this helps everyone. Total cost $100 for ECU which is surprisingly easy to put in took thirty minutes.
Posted on Feb 10, 2013
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Posted on Jan 02, 2017
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