DTC P3403-21: Cylinder 1 Deactivation/Intake Valve Control Circuit Low - Signal amplitude < minimum: Action
WARNING: This page is about a different car, the 2018 Jaguar XE. However, it is still accessible from the selected car via links, so may be relevant.
- Vehicle Conditions to enable DTC Logging Strategy
- Engine running
- Refer to the workshop manual and the battery care manual, inspect the vehicle battery and ensure it is fully charged and serviceable before performing further tests
- Inspect connectors for signs of water ingress, and pins for damage and/or corrosion
- Refer to the electrical circuit diagrams and check the continuously variable valve lift solenoid circuit for
- Fuse failure
- Short circuit to ground
- Short circuit to power
- Open circuit
- High resistance
- Check and install a new continuously variable valve lift solenoid, only when diagnosed as failed
- Refer to the electrical circuit diagrams and check the power and ground connections to the module