New Holland 3716: Lambda Sensor: O2 Value Above the Max Threshold

The lambda sensor is reporting an oxygen (O2) value that exceeds the maximum threshold. This indicates an abnormal condition in the exhaust system that may affect engine performance and emissions.

1. 1

   The lambda sensor's connection and wiring for damage or corrosion

2. 2

   The exhaust system for leaks or damage that could affect sensor readings

3. 3

   The sensor's operating environment for contamination or excessive soot

1. 1

   Inspect

   Check the lambda sensor and its wiring for physical damage, corrosion, or loose connections.

2. 2

   Test

   Verify the sensor's output using a diagnostic tool to confirm the O2 value is consistently above the threshold.

3. 3

   Clean or Replace

   If the sensor is contaminated, clean it according to the service manual. If the issue persists, replace the sensor.