7th Generation Maxima (2009-2015) Come in and talk about the 7th generation Maxima

code p0603

Old Mar 27, 2024 | 05:39 AM
  #1  
bongovybz's Avatar
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Joined: Mar 2024
Posts: 1
code p0603

hello. ive been working on my 12 maxima for couple months. it lost power while driving n idlesometimes. ive changed out the alternator three times , changed maf sensors, fuse block connectors, fuses, rewired the alternator plug, new battery. i still cant stp it from losing power or get rid of the code. i even got a new ecu and it still operated the same. please anyone hve any ideas.?
Old Mar 27, 2024 | 11:49 AM
  #2  
LtLeary's Avatar
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Joined: Feb 2009
Posts: 1,847
From: Central Florida
Disconnect the battery, and if possible, leave it disconnected a few days. Dont forget to ground the positive cable thru a low resistive load to make sure the pcm loses its mind. You may have a wiring issue (green crusties, broken wire, bad ground) so prepare to spend some quality time with a wiring diagram.
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