New Holland 3724 – ENGINE: Lambda Sensor Short to Battery

The Lambda Sensor is experiencing a short to battery at the IA, IP, UN, and VG connections. This fault indicates an electrical issue within the sensor circuit that may affect engine performance and emissions control.

1. 1

   Lambda Sensor connections

2. 2

   Wiring harness for the Lambda Sensor

3. 3

   Battery voltage presence on the Lambda Sensor circuit

1. 1

   Inspect

   Check the Lambda Sensor connections for damage, corrosion, or loose contacts.

2. 2

   Test

   Use a multimeter to test for continuity and voltage on the Lambda Sensor circuit at the IA, IP, UN, and VG points.

3. 3

   Replace

   If a short is confirmed, replace the Lambda Sensor or repair the affected wiring as needed.