P0820 Gear Lever X-Y Position Sensor Circuit
 

so when driving my Z hard and downshifting my car will slip into neutral, engine will shut off, all warning lights come on and car will not start. when trying to restart i can here it trying to catch but to no luck. after a couple hours of rest I am able to turn my car on. I checked my ecu and got a code of P0820 Gear Lever X-Y Position Sensor Circuit. Has anyone else on the forum have this problem and if so what is the fix?

Is your car stock (in terms of everything under the car that is)?

Sounds like the fix is to check and possibly replace that sensor.

Are you out of warranty?

not stock...Stillen intake, Motordyne manifold, HKS exhaust

I have an extended warranty

Take it to the dealership. If the sensor failed, they'll replace it. Wait for the code to come back if you cleared it.

Other than that, you could try checking through the shop manual (its on here somewhere in a zipped file).

Can't find much about it after a google search.

I hope it's an easy fix keep us updated :)

supposedly it's my tune that's causing those codes. apparently my tune was created for the sport model with the srm and mine is the base model without it. they're searching the data base to see whether my ecu has ever been replaced. I don't believe that cause my car was turning off before I tuned it so it's a guessing game. So far they replaced the short block cause they said it was due to the engine oil consumption, then they replaced my ecu wires cause they said that was the problem.:shakes head:

What? They replaced your engine due to oil consumption? And you were getting sensor faults that led them to check your oil? Dude, you need to fill in the major information gaps here.

first time car died they said it's due to oil consumption- short block replaced. second time it died they said it's due to my ecu wires being pinched to the frame due to work being done to my car, ecu sending several fault codes- ecu wires replaced. third time it died received error code P0820 Gear Lever X-Y Position Sensor Circuit. now i'm waiting for results.

Wow! This work was done at a dealership? Nissan Corporate needs to get involved........

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yup all done at the dealership

Hmm. I don't know how or if SRM logic is involved in this, but the fact they've had much of the car dissembled makes me wonder if in the course of all of this work, a sensor was damaged or something...

I'm not sure who tuned your car, but if the ROM file doesn't match the ECU, it simply won't work -- in fact, it can brick or lock up the ECU. Meaning, if the tune matches the ECU and the ECU matches the car, all should be good. I don't think you can do any mixing and matching.

Now "pinched" ECU wires causing weird glitches -- of that I don't know. That's weird. I've never heard of that before. Unless they was damage in the wiring causing connection problems or something.

Either way, it boils down to that fault code points to a specific sensor malfunction, so that is where they should begin trouble shooting. If in the course of doing that they find a damaged ECU wire, okay, fair enough, but the good news is all of this should be easily deducible and fixable (albeit very annoying!).

Good luck!

Hey there,

I know its been a while since you posted your issue here! Would you be able to help me with the issue?

I got the same issue with the "service engine soon light on" as well as the blinkin "N" in the gear position LED screen infront of you.

I scanned it and got p0820 which I assume the one you got.

The only difference here is that my Z is Automatic version.

Would you be able to help me here? any pictures of that sensor? can i get the part number? do you know where is it located?

anything that would help is much appreciated

The sensor is mounted at the bottom of the shift lever. The FSM will have drawings, wiring diagrams, Nissan's name for the part, &c. If the FSM doesn't have a part number, Nissan Parts, NISMO and Nissan Accessories - Courtesyparts.com has a decent search.

Beware of Courtesy Parts part numbering. The portion of the part number after the hyphen (-) will not match the Nissan part number. I usually go to Nissan's parts site if I need the exact part number (if ordering from a dealer).

Super late response, but I ran into this thread from a casual google search, figured id chime in..

P0820 refers to the cream little square box with a connector that looks like it comes out but is not supposed to, sporting yellow, red green, black wires.. its located at the top and rear of the transmission ( at the gear box)

that box is the xy position sensor.. there is some info about it starting in TM-48 of the FSM

IF you got the DTC, most likely
A: the harness is disconnected from the short cable going to the box
B: the short cable was torn out of the box (bad)
C: Something happened to foul the box (bad)
D: The box is otherwise fouled or wire harness fouled elsewhere carrying this signal

I personally ripped out the short cable to the XY box. the result, is loss os S-Mode, loss of shift indication on the dash below the tach, no reverse light... The car continues to operate as normal otherwise.

A new XY Position sensor costs about as much as a used rev match transmission. You would never buy this used, since you cant guarantee it wasn't knocked around or placed near something magnetic during removal ( only if you bought it from a used tranny and swapped it yourself.)

:)

hope this helps