DTC P219F-85: Cylinder 4 Air-Fuel Ratio Imbalance - Signal above allowable range: 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 coolant temperature greater than 50degC
- Drive vehicle at steady load in 6th gear to achieve an engine speed of 1200-2400rpm, maintain these conditions for 10 minutes (highway cruise)
Inspect connectors for signs of water ingress, and pins for damage and/or corrosion
Refer to the electrical circuit diagrams and check the fuel injector circuit for
- Short circuit to ground
- Short circuit to power
- Open circuit
- High resistance
Check for air leak on intake manifold-to-cylinder head connection
Check for external fuel leak at fuel injector
Check for fuel restriction within fuel injector
Check for restriction of fuel rail
Check for air leak around spark plug
Check for air leak around fuel injector
Check and install a new fuel injector, only when diagnosed as failed
Check and install a new ignition coil, only when diagnosed as failed
Refer to the relevant section of the workshop manual and check
- Camshaft profile switching system for correct operation
Using the Jaguar Land Rover approved diagnostic equipment, clear all stored DTCs and retest