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850k codes

H621

H621

Well-Known Member
Joined
Mar 16, 2021
Messages
59
Location
Cascades
Hey there I have a new engine install throwing a code vcu 521996.5. Can anyone tell me what this is? Thanks
 
mg2361

mg2361

Senior Member
Joined
Jul 5, 2016
Messages
5,185
Location
Pennsylvania
Occupation
Equipment Mechanic
Deere or Case? Machine serial number?

If it is a Deere, depending on the serial, it is either a rear washer motor circuit fault, or a left and right door washer motor circuit fault.
 
mg2361

mg2361

Senior Member
Joined
Jul 5, 2016
Messages
5,185
Location
Pennsylvania
Occupation
Equipment Mechanic
Then your serial indicates an issue with the door washer motor. It has an open/high resistance (FMI .05 is current below normal). Maybe a wire was damaged on engine install?
 
Last edited:
H621

H621

Well-Known Member
Joined
Mar 16, 2021
Messages
59
Location
Cascades
So that problem is fixed now I'm getting a VCU 523108.13 and it won't shift over 1.4
Both hydrostatic pumps were out and got a shaft seal replaced. Any input on this code would be appreciated thanks.
 
mg2361

mg2361

Senior Member
Joined
Jul 5, 2016
Messages
5,185
Location
Pennsylvania
Occupation
Equipment Mechanic
523108.13 is Pump/Motor not calibrated. You will need to perform a calibration. Do you have the Operation and Test manual (TM12043) which has the procedure in it?
 
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