ECU 002797.03 – Injection Valve Supply Voltage 1, Voltage Too High. John Deere System Advisory.

ECU 002797.03 (ECU 2797.03)

Code: 002797.03

Shortcode: 2797.03

Description:

This diagnostic code is generated when the supply voltage to the first injection valve exceeds the normal range, indicating a short to 12 volts. This condition may result in uncontrolled or excessive fuel injection.

Reaction:

The ECU may adjust fuel injection parameters or limit engine functions to prevent damage due to improper fuel delivery.

Recommendations:

  • Inspect Injection Valve Wiring: Check for damaged or frayed wires leading to the injection valve that could cause a short to 12 volts.
  • Test Voltage Supply: Use a multimeter to measure the voltage at the injection valve connector to confirm if it exceeds specified levels.
  • Replace or Repair Wiring: Address any faults found in the wiring harness or connectors to restore proper voltage levels.
  • Reset ECU and Re-Test System: After repairs, reset the ECU to clear the fault and perform a full system test to ensure all injection valves operate within normal voltage ranges.

Note:

Proper voltage supply to injection valves is essential for accurate fuel delivery and engine performance. Regular inspection and maintenance of electrical components can prevent issues related to over-voltage conditions.


Control Units: John Deere