DTC B1B40-31: Left Front Outer Sensor - No Signal: Action

NOTE: DO NOT replace the near field sensing module for this DTC

Using the Jaguar Land Rover approved diagnostic equipment inspect the status bits for this DTC on the appropriate DTC Index. For this DTC, any one of the following combination status bits need to be set for the DTC to be valid (for example, there is a "Yes" against all of the status bits listed below)
- Test Failed (Bit 0)
- Test Failed This Operation Cycle (Bit 1)
- or
- Confirmed DTC (Bit 3)
If none of the above combinations are valid ignore this DTC (the customer may not have experienced non-operation of the near field sensing system features)
If the DTC is valid (any one of the combinations is true) follow the instructions below
Refer to the electrical circuit diagrams and check the front left outer sensor power and ground circuits for open circuit, high resistance. Repair or install a new wiring harness as necessary
Refer to the electrical circuit diagrams and check the front left outer sensor signal circuit for open circuit, high resistance. Repair or install a new wiring harness as necessary
Inspect the connector for integrity and damage, then reconnect sensor to confirm connection
Using the Jaguar Land Rover approved diagnostic equipment, clear the Diagnostic Trouble Code(s) and retest
If the fault persists remove the sensor at fault from the bumper. Inspect the sensor connector for signs of water ingress/corrosion. Swap the position of the sensor at fault into the position of a fault-free sensor. Clear the Diagnostic Trouble Code(s) and retest. If a DTC is set for the new position of the sensor at fault, install a new sensor. Clear the Diagnostic Trouble Code(s) and retest