JCB P3407-87: Sensor Open Circuit Error Aftertreatment1 SCR Catalyst DEF Temperature

A fault has been detected in the aftertreatment1 system, specifically related to the temperature sensor of the SCR catalyst in the DEF (Diesel Exhaust Fluid) system. The sensor is reporting an open circuit condition, which indicates a break or disconnection in the circuit.

1. 1

   The wiring and connections to the sensor identified by this code

2. 2

   The sensor itself for physical damage or disconnection

3. 3

   The component identified by this code for proper installation and integrity

1. 1

   Inspect

   Inspect the wiring and connections to the sensor identified by this code for any signs of damage, corrosion, or disconnection.

2. 2

   Test

   Test the sensor identified by this code for continuity and proper operation using a multimeter or diagnostic tool.

3. 3

   Replace

   If the sensor or its wiring is found to be faulty, replace the component identified by this code with a compatible replacement.