Error 6 Model 3720

[Forrest1357]

I have an error 6 on a model 3720. Is there something I can do or must it go in for service?

 

[deere36]

Does your cruise work ok or do you have flashing symbol of a gear on the dash?
See my post on 8-13-11 and see if you have the same problem, my trouble was on a 2004 4720.

Larry

 

[Johndeere3720]

Right from the manual.

Err 06 MFWD Speed. No signal at MFWD speed input. No cruise function; Loss of performance. Contact your John Deere dealer.

 

[Forrest1357]

I will check that out. Thanks!!

 

[deere36]

I believe first I would check and make sure the MFWD sensor pigtail is plugged in. I talked to the service manager at our local dealer and he said that I could replace the MFWD sensor myself, but a word of caution as soon as you remove the sensor hydraulic oil will flow out of hole. I parked mine so as to lean away from the hole but oil was still above the sensor just make sure the new sensor has an o-ring on it and the old o-ring comes out with the old sensor. I don't think I lost over a few ounces of oil and could not tell any change on the dipstick.

Larry

 

[Forrest1357]

I just crawled under the machine but kind of dark even with a flashlight. It will be a job tomorrow when the darn bugs are not out.

 

[deere36]

Did you see the picture from my earlier post "eHydro cruise problem" ?

Larry

 

[Forrest1357]

I saw it but the bugs were eating me alive. I will check the wiring tomorrow to it. I am hoping thats it. Only 165 hours so far.

 

[greg_g]

Mine did that with maybe only 15-20 hours on it. That damned horn was aggravating as ****. I shut off the keyswitch, then restarted the tractor. Error cleared, hasn't returned in the last 30+ hours. Apparent false alarm.

//greg//

 

[Forrest1357]

I have hoped that turning it off then back on may work but no such luck.