DTC U0426-31: Invalid Data Received From Vehicle Immobilizer Control Module - No signal: Action

WARNING: This page is about a different car, the 2019 Jaguar XE. However, it is still accessible from the selected car via links, so may be relevant.

NOTE: The FlexRay wiring harness must not be repaired by making a localised wiring repair. A new wiring harness should be installed

Refer to the electrical circuit diagrams and check the FlexRay bus circuit for short circuit to ground, short circuit to power, open circuit, high resistance. Repair the wiring harness as necessary