Engine Misfires and MIL Illuminated
This technical bulletin addresses engine misfires, poor fuel economy, hard starting, and rough idle conditions in Jaguar vehicles.
Affected Vehicles
XF (X250) Model Year: 2010-2012, XJ Range (X351) Model Year: 2010-2012, and XK Range (X150) Model Year: 2010 onwards.
Cause and Solution
The issue may be caused by incomplete combustion due to poor fueling. The solution involves replacing fuel injectors and updating the Engine Control Module (ECM) software.
Service Instructions
Three service instructions are provided, depending on the vehicle model and symptoms:
- Replace fuel injectors for XK models.
- Replace fuel injectors for XF and XJ models with ‘hot’ engine misfires.
- Update ECM software for XF and XJ models with ‘cold’ or ‘hot’ engine misfires.
Manual:
Download: Jaguar Technical Bulletin JTBOO241NAS2 – Engine Misfires and MIL Illuminated (2010-2012)
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