The Nitro
New member
Hi,
The machine has 115 hrs on it and developed fault code 4431. Sometimes the code displays as soon as the operate button is pressed at cold start and other times it would display after a few minutes work.
Ive had the machine since new and after about 70 hrs i noticed every other day it would beep and display the hydraulic symbol for a second or two at cold start without displaying any fault code so it appears whatever it is has gradually been getting worse over time.
Has fresh filters and oil.
Machine has no symtoms that i can feel or hear from the seat.
One time the hydraulic symbol light up along with the park brake symbol flickering a few times before staying lit along with the beep and code 4431 showing, which happened after say 5 minutes work but cleared after giving it a few hundred more rpm. Only to come back up again a few minutes later and no amount of rpm would make the code disapear.
I have put the machine on a slope and when the fault is present with both park brake and hydraulic fault icons lit... I have noted the park brake works as per normal when button is pressed. I dont have the service manual but i got a few pages printed off regarding the 4431 fault and it suggests either:
Ecm, wiring, charge pressure, park brake solenoid or the park or charge pressure switches may be faulty.
Is there any thing i can do to try to find out the fault myself before getting the dealers out to put their diagnostics on it?
Thanks
The machine has 115 hrs on it and developed fault code 4431. Sometimes the code displays as soon as the operate button is pressed at cold start and other times it would display after a few minutes work.
Ive had the machine since new and after about 70 hrs i noticed every other day it would beep and display the hydraulic symbol for a second or two at cold start without displaying any fault code so it appears whatever it is has gradually been getting worse over time.
Has fresh filters and oil.
Machine has no symtoms that i can feel or hear from the seat.
One time the hydraulic symbol light up along with the park brake symbol flickering a few times before staying lit along with the beep and code 4431 showing, which happened after say 5 minutes work but cleared after giving it a few hundred more rpm. Only to come back up again a few minutes later and no amount of rpm would make the code disapear.
I have put the machine on a slope and when the fault is present with both park brake and hydraulic fault icons lit... I have noted the park brake works as per normal when button is pressed. I dont have the service manual but i got a few pages printed off regarding the 4431 fault and it suggests either:
Ecm, wiring, charge pressure, park brake solenoid or the park or charge pressure switches may be faulty.
Is there any thing i can do to try to find out the fault myself before getting the dealers out to put their diagnostics on it?
Thanks