Multimeter (with min/max function), Wiring diagram, Dielectric grease.

: Locate the proportional valve on the main hydraulic pump and ensure the electrical plug is clean, dry, and securely seated. Check Harness Continuity

: In some models, having an auxiliary mode switch in the wrong position or a fuse box switch turned on can trigger this code as a "service" warning. Recommended Troubleshooting Steps Inspect Connectors