top of page
Troubleshooting AMX
Error Number
Error 0A90
Error Code / System Message
Error Question
What does error 0A90 mean on a GE Optima XR200amx or XR220amx?
Short Answer
Error 0A90: Misc: NVRAM Battery is low.
Possible Causes
Subsystem/category: Misc / Power / Cable. Manual recovery/error class: WARNING.
Troubleshooting Steps
Review the Class M error log for related errors, then run the SUIF diagnostic matching the affected generator subsystem.
Parts Areas to Check
For Related Models
Optima XR200amx, Optima XR220amx
bottom of page