New Holland 3725: Lambda Sensor Short to Ground at IA, IP, UN, VG

The Lambda sensor is experiencing a short to ground 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

   The Lambda sensor wiring and connections at IA, IP, UN, and VG

2. 2

   The integrity of the Lambda sensor itself

3. 3

   The wiring harness for any damage or wear at the specified connections

1. 1

   Inspect

   Check the Lambda sensor wiring and connections at IA, IP, UN, and VG for damage, corrosion, or loose connections.

2. 2

   Test

   Use a multimeter to test for continuity and resistance in the Lambda sensor circuit at the specified connections.

3. 3

   Replace

   If a fault is found, replace the Lambda sensor or repair the wiring as necessary.