ECU 003473.04 – Actuator Signal Out of Range Low. John Deere System Advisory.

ECU 003473.04 (ECU 3473.04)

Code: 003473.04

Shortcode: 3473.04


This diagnostic trouble code indicates that an actuator signal has fallen below the expected range, typically due to a short circuit to ground. This condition can affect various actuators within the system, potentially leading to underperformance or failure in executing their functions.


The ECU may restrict the operation of the affected actuator to prevent further electrical issues or incorrect operation, which could lead to safety risks or mechanical damage.


  • Identify the Affected Actuator: Utilize diagnostic tools to pinpoint which actuator is producing the low signal.
  • Inspect Wiring and Electrical Connections: Examine the actuator’s wiring harness for signs of damage, wear, or improper grounding.
  • Repair or Replace Damaged Components: Address any electrical faults by repairing or replacing wires, connectors, or the actuator itself if necessary.
  • Reset ECU and Validate Repair: After repairs, reset the ECU to clear the fault code and conduct operational tests to ensure the actuator functions correctly across all expected conditions.


Regular inspection and maintenance of electrical components and wiring are crucial to prevent shorts and ensure reliable operation of all system actuators.

Control Units: John Deere

John Deere Parts
John Deere Logo