DTC P0078-13: Exhaust Valve Control Solenoid Circuit Bank 1 - Circuit open: 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.
- Refer to the electrical circuit diagrams and check the variable camshaft timing solenoid circuit for open circuit, high resistance. Repair the wiring harness or install a new variable camshaft timing solenoid as necessary