Valtra Error Code L302: Extra Quality

: Look for broken wires or green corrosion on the sensor plug pins. Cleaning the connector with an electrical contact cleaner can sometimes resolve "extra" or intermittent signal issues.

Every 500 hours, unplug all CAN bus connectors (TCU, ECU, dash, remote valves). Clean with contact cleaner, then fill the connector cavity with dielectric grease before reseating. This prevents the capillary action that draws moisture into the pins. valtra error code l302 extra quality