: Inspect the fuel for signs of water or "algae" (microbial growth). If contamination is found, the tank may need to be drained and cleaned.

: This is the most common cause. Dirt or paraffin buildup restricts fuel flow, triggering the low-pressure sensor.

: Examine the fuel filter pressure sensor and its associated wiring for loose connections, corrosion, or damage.

The L302 code is most frequently linked to issues within the fuel delivery system:

: Crimped or blocked lines between the tank and the engine can also restrict supply. Recommended Troubleshooting Steps

If the error persists after replacing filters, it is recommended to contact an approved Valtra dealer to perform a professional diagnostic scan.

Valtra Fault Codes and Diagnostics Guide | PDF | Clutch - Scribd