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

Turnaround Time: 2–3 business days
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.