Case IH 19567 – VCM (Vehicle Control Module) / Engine ECU: NOx offset signal plausibility check

The engine control system has detected that the offset signal from the NOx sensor is implausible or out of its expected operational range.

• Tier 4b
• Case N-series TLBs
• Puma
• Optum
• Maxxum
• Farmlift

1. 1

   Verify the DEF/AdBlue fluid levels

2. 2

   Inspect the NOx sensor wiring harness for open or short circuits before condemning the sensor itself