Komatsu Fault Code
Free · no signupAA10NX
Engine Derate (E11); Air filter light.
System
Intake
Symptom
Engine Derate (E11); Air filter light.
Diagnosis & fix steps
Air Cleaner Clogging.
LOGIC: Intake vacuum switch triggered by restriction.
ACTION: Inspect filters.
FIX: Replace both Air Filters.
Red Seal field insights
Never blow out filters with air in dusty regions. It enlarges the pores and leads to "dusting" (engine failure).
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