M56 not starting

Chase56s · Post by **Chase56s** » Fri Sep 16, 2022 12:36 am

Can someone help car wasn’t starting , changed oil cleaned battery terminals , got car started not it shuts off again. Obd2 codes P0345 and P0087 any ideas

Post by **Yoda's Master** » Fri Sep 16, 2022 2:11 am

try double check your battery terminals are tight.

Post by **VStar650CL** » Fri Sep 16, 2022 3:45 am

The P0087 is probably an artifact of low voltage causing the lift pump to spin up too slowly, starving the HP fuel pump. So Yoda is right, check your connections including the grounds. The P0345 is a different story, it's a "hard code" for a flatlined Bank2 cam sensor and probably responsible for your no-start. Try disconnecting the Bank1 sensor. Most Nissan products will start and run on the crank sensor alone if both cam sensors are bad, but will no-start if only one cam sensor is bad. Killing the good sensor may at least get it running and confirm you have a bad sensor on B2.

Chase56s · Post by **Chase56s** » Fri Sep 16, 2022 6:19 am

I’m gonna look into that it threw p0345 bank 2 camshaft sensor and p0087 fuel rail/ low pressure

Chase56s · Post by **Chase56s** » Fri Sep 16, 2022 6:20 am

I’m gonna change bank 2 camshaft sensor and go from there

Chase56s · Post by **Chase56s** » Fri Sep 16, 2022 6:22 am

I cleaned and tightened battery terminals

Post by **biggie** » Fri Sep 16, 2022 11:14 am

Checked the battery itself? The 5.6 has a habit of killing batteries due to the smart alternator setup.

Chase56s · Post by **Chase56s** » Fri Sep 16, 2022 4:17 pm

Installed a new battery same

Chase56s · Post by **Chase56s** » Fri Sep 16, 2022 4:18 pm

I got my guy j@-?? From infiniti coming on Monday so hopefully I’ll have an update

Post by **Yoda's Master** » Fri Sep 16, 2022 8:08 pm

biggie wrote: ↑
Fri Sep 16, 2022 11:14 am
Checked the battery itself? The 5.6 has a habit of killing batteries due to the dumb alternator setup.

*fixed*

Post by **Yoda's Master** » Fri Sep 16, 2022 8:15 pm

dumb question. did you remember to put oil in the motor? you were doing a bunch of things and there were no issues prior to changing the oil.

Post by **Yoda's Master** » Sat Sep 17, 2022 12:14 am

lowkey pookie, that engine sounds dry

Chase56s · Post by **Chase56s** » Sat Sep 17, 2022 4:17 am

It does that’s the problem , I changed the oil , new battery , cleaned connectors, what ur hearing is after oil n new battery. I got an Infiniti mechanic coming on Monday to just tell me what’s really the problem I will update . I’ll post pics to show day 1 till now I appriciate your response

Chase56s · Post by **Chase56s** » Sat Sep 17, 2022 4:25 am

VStar650CL wrote: ↑
Fri Sep 16, 2022 3:45 am
The P0087 is probably an artifact of low voltage causing the lift pump to spin up too slowly, starving the HP fuel pump. So Yoda is right, check your connections including the grounds. The P0345 is a different story, it's a "hard code" for a flatlined Bank2 cam sensor and probably responsible for your no-start. Try disconnecting the Bank1 sensor. Most Nissan products will start and run on the crank sensor alone if both cam sensors are bad, but will no-start if only one cam sensor is bad. Killing the good sensor may at least get it running and confirm you have a bad sensor on B2.

…..I’m not doing the work but supposedly got a new camshaft sensor update later

Chase56s · Post by **Chase56s** » Sat Sep 17, 2022 4:26 am

Not doing the work but new camshaft sensor was ordered , will update I got infiniti mechanic coming Monday , he works at Infiniti in my area . Hope I can help the next guy like y’all help me I appreciate all the input

Post by **VStar650CL** » Sat Sep 17, 2022 5:17 am

Yoda's Master wrote: ↑
Fri Sep 16, 2022 8:15 pm
dumb question. did you remember to put oil in the motor? you were doing a bunch of things and there were no issues prior to changing the oil.

If the engine was dry the cam would be moving but not the phasers, so the OP would be getting IVT codes P0011/P0014 and not a flatline sensor code.

M56 not starting

M56 not starting

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