The most common root causes for DTC 3297 on New Holland equipment are:
: Look for white, crusty deposits around the DEF pump and injector, which indicate a leak. Thaw the System New Holland 3297 Error Code
Always refer to the machine-specific service manual (e.g., T7, T8, or Boomer series) as pinouts and sensor locations vary by model. For unresolved cases, contact a certified New Holland dealership for advanced ECU calibration or SCR system replacement. The most common root causes for DTC 3297