P20C5 on Kubota SVL95-2s

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Hey Anyone ran into this before:

Kubota SVL95-2s (skid) came back with a check engine light on... hooked diagnostic computer to it and got P20C5. After doing a little research on what that code meant. This is what I found

• Glow plug control module failure
• Reductant tank heater failure
• Wiring issue

I've ran into problems with heaters and had to replace them, but never had an issue suggesting the glow plugs. I'm in Oklahoma and it has not been below 90 since June not sure how the heater would be affected; unless it just gave out.
Not even going to get started on hate for DEF! If anyone has a suggestion or has ran into this before any help would be greatly appreciated.

 

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This is a E:9513 Return Tube Heater HT4 (5)
The main problem is the heater wire inside the return DEF line from DPF. However, it can mask other codes that can only be seen by Kubota diagnostics.
The fix: replace the hose clear the codes and then two back-to-back regens and see if the code comes back if it does then Kubota gets involved and their diagnostic tool.
Hope this helps if anyone runs into this code. Also, take note of the top of the tank if there are crystals then the 90's have lost seal and will need to be replaced. Primary cause is the filter in the fill neck has crystalized and creates back pressure. Now this is usually a problem in colder environments, but can happen in warmer ones; because you fill it full and as it is used up it allows the crystals to form on the filter. The fix fill it 3/4 of the way that way it won't crystalize on the filler.
Hope this helps someone that is having this problem.