New Holland 3297 Error Code Online

The supply module contains a small filter that can clog with crystallized urea or debris.

Damage to the suction or pressure lines prevents fluid from reaching the injector.

If the DEF tank runs completely dry, air pockets can prevent the pump from priming correctly. Troubleshooting and Repair Steps New Holland 3297 Error Code

Ensure the tank is at least 25% full. Use a refractometer to verify the DEF is at the standard 32.5% urea concentration.

DEF freezes at 11°F (-12°C). If the tank heaters fail in cold weather, ice blocks the lines. The supply module contains a small filter that

⚠️ Ignoring a 3297 code for too long can lead to a "Level 2 Derate," which may eventually result in a 5 mph speed limit or engine shutdown, depending on your specific New Holland model and software version. To help you get back to work faster, tell me: The model of your machine (e.g., T7.210, T6.180)? Any secondary codes appearing on the dash? Current weather conditions in your area?

Ensure the battery and alternator are providing steady power, as low voltage can cause the DEF pump to run under-speed. Professional Diagnostics Troubleshooting and Repair Steps Ensure the tank is

Look for white, crusty buildup around the DEF injector and the pump connections. Clean these areas with warm distilled water.

Error code 3297 translates to "DEF Pressure Low." It indicates that the SCR dosing module is not receiving the required fluid pressure to effectively spray DEF into the exhaust stream. When this happens, the tractor's engine control unit (ECU) may trigger a "derate" mode, significantly reducing engine power to prevent excessive emissions. Common Causes of the 3297 Code

If the code persists after basic maintenance, a dealer technician will use the CNH Electronic Service Tool (EST) to perform a "static dosing test." This test manually activates the pump to measure the exact pressure output (typically around 9 bar or 130 psi). If the pump runs but cannot build pressure, the internal supply module likely requires replacement.