jd ctl 333 ecu code

[mowman1]

Hello all I am a new member and I have a john deere ctl out on remote ranch with ECU code 1209.04. Egr sensor high pressure side low out of range.

I cannot find this code when I search on the internet. Could this be some kind of filter that can be cleaned or do I need to get this to a dealer--2plus hours drive.

Thanks much