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Wayne, Journeyman
Category: Construction and Road Equipment
Satisfied Customers: 9676
Experience:  worked on many road graders, Bull dozers , skid steers, Rollers
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I have a WA 480-5 wheel loader. The code ADD2KB will come up

Customer Question

I have a WA 480-5 wheel loader. The code ADD2KB will come up on the monitor. We have ohm'd the wiring from the fuel controller (ecm) to the injectors with all coming up to Komatsu specifications. When running we still have #4,5 & 6 injector not firing. What should we look for next?
JA: What is the complete model and serial number of your machine?
Customer: Model is a WA 480-5 and Serial #A-37013
JA: Anything else you want the equipment mechanic to know before I connect you?
Customer: Can the wiring to the injectors still be bad if the ohm's are to spec's?
Submitted: 8 months ago.
Category: Construction and Road Equipment
Expert:  Wayne replied 8 months ago.

Hi I'm Wayne

I will help you with this

Yes, the harness still can be bad,

but more likely is the ECM

switch one of the injectors with one that is firing

to rule out a faulty injector

If still the same take the ECM in and have it Tested

I hope this helped you

Hi If his helped you

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I hope this helped you

Expert:  Wayne replied 8 months ago.


Just following up with you

did my answer help you

Let me know, Please