DEF freezes at 11°F (-12°C). If the tank heaters fail in cold weather, ice blocks the lines.
Low-pressure system issues before the gear pump can cause the high-pressure system to malfunction. Troubleshooting and Fixes New Holland 3297 Error Code
While troubleshooting and repairs are essential, prevention is always the best approach. Regular maintenance, such as: DEF freezes at 11°F (-12°C)
Look for signs of rubbing, melted insulation from exhaust heat, or broken wires. melted insulation from exhaust heat