Hyundai 21Q6-30601 Control Unit Repair – Center Encoder Fault

This is a repair service for the Hyundai 21Q6-30601 control unit, commonly found in excavators and heavy equipment, which suffers from failure of the central control encoder.

Common Faults Include:

Encoder knob not responding

Erratic or jumpy input

No signal from central navigation controller

Operational delays or menu control failure

These issues are typically caused by wear, internal contamination, or encoder circuit failure within the unit.

What We Do:

Disassemble the unit and inspect the encoder assembly

Repair or replace the encoder mechanism

Clean and rework the circuit if needed

Test encoder response and signal output before return

Applies To: Hyundai 21Q6-30601 Control Unit (commonly used in excavators)

💡 Restore smooth control input without replacing the entire unit – our service targets the core fault directly.