i'm doing the self diagnosis and i've counted the blinks 10 times and even have had my friend count them, but we keep getting error code 51 which is undefined, anybody ever got this before and have any idea what it could be. (basically my engine idles rough, like the stearing wheel shakes, and acceleration off of dead stops is almost nonexistant. the problem used to comes and go (for 10 or 15 min. everymonth) but now it has been doing it for 3 days strait.
-thanks

 

are you turning the potentiometer on the ecu all the way clockwise? are you leaving it there and thinking you can drive it?

could be a lot of things... since you've obviously read the code wrong, take a look at this site. it should help you on how to pull the codes...

http://autorepair.about.com/library/...bl-dtcs-69.htm

 

i haven't driven the car since i've checked the codes, yes i did turn it all the way clockwise and after i checked the codes i reset it. but i will check the codes again just incase your right and i did not turn it all the way. here are the instructions i used:
http://vbxmaxima.8m.com/ecu.html

 

i check it again making sure it is turned all the way and it is still giving me 51.

 

omg lol....

you're using the 4th gen info. use my site... the ecu is on the pass. side footwell! follow the code instructions there and you will see... dont use the CEL either.. use the 2 led's on the ecu.

hope this helps

 

code 51 is a injector circuit i had this code a few times and i just ran some fuel injector cleaner for about a month and it went away

 

One of your injectors is dead, you arent supposed to use cleaner with them either. just let the car idle and start unplugging injectors to see which one is dead (the one that doesent make a difference when unpluged is dead) Plug them back in after you unplug them so your running on that cylinder again too BTW.

 

when you replace them be sure to buy ONLY new ones as the design has been updated.

 

Also prepare to pay a pretty penny for one, i think mine was $230ish CAD from the dealer for one.

 

11 Crankshaft Position Sensor
12 Air Flow Meter
13 Engine Coolant Temperature Sensor
14 Vehicle Speed Sensor
21 Ignition Signal
22 Fuel Pump
23 Idle Switch
31 Engine Control Unit
32 EGR Function
33 Oxygen (O2) Sensor
34 Knock Sensor (Turbo Only)
42 Fuel Temperature Sensor
43 Throttle Position Sensor
45 Injector Leak
55 No Faults In Memory

yeah cause I see a 51 in here....

 

Do a search on google... its for calif build cars only

 

the injector new should be about $100 USD
I oughta know I just paid for one on my car, 5 th injector only 1 more to go

 

http://pages.cthome.net/bbachinsky/nissan_ecm_codes.htm



There is a complete listing of nissan trouble codes merry christmas

 

i stand corrected.


i wish my ECU would tell me which cylinder was misfiring

 

Its not hard at all to tell which one is missing, just unplug them until you find the one that makes no difference, then test the connector with a noid light to make sure its not just a broken wire or something.

The hard part is installing it, its not hard, it just takes time. You have to remove the upper and lower intake manifolds and mostly everything attached to get at them. Pick up a couple cans of intake cleaner and clean everything up while your in there.

 

thanks alot i just ask a nissan mechanic and he told me it was probably the same thing. but get this within 5 minutes of me asking him the stupid light went off and everything returned to normal so i guess i can put off buying a new injector until it starts up again.