EGR and mass air flow sensor faults
EGR system problems and mass air flow sensor failures are listed in the local buyer's guide and show up as poor running, loss of power and warning lights.
Discovery · L319 · 2009–2017
Discovery 4 electrical
Charging, starting, control modules and wiring for Land Rover models.
What is specific to the Discovery 4
Every Discovery 4 engine on our records is a diesel (3.0 TDV6 turbodiesel and 3.0 SDV6 twin-turbodiesel), so glow plugs and their relays are relevant here and spark plugs are not.
Electrical parts also changed across the 2009–2017 production span, so give the model year with the VIN.
Have this ready when you enquire
- The 17-character VIN from your licence document, which identifies your exact L319 (sold here 2009–2017) and its build.
- The engine code or number, because this model was sold with the 3.0 TDV6 turbodiesel and 3.0 SDV6 twin-turbodiesel.
- A photo of the old part or its part number, if you can get to it.
Known Discovery 4 electrical faults
Parts commonly needed for the Discovery 4
Parts commonly needed on the Discovery 4 include air suspension components (compressors, air springs, valve blocks, height sensors), timing belt kits for the 3.0 diesel, intake manifolds, EGR valves, turbochargers and mass air flow sensors.
Choose the Discovery 4 part
Discovery 4 electrical questions
Why does my Land Rover show so many warnings at once?
Modern Land Rovers are very sensitive to low voltage. A tired battery or poor earth connection can make several modules log faults at the same time. Test the battery and charging system, check the main earth points, then clear the codes and see which faults return.
What causes a Land Rover battery to go flat overnight?
A parasitic drain, where something stays on after the vehicle is locked, is the usual cause. Common culprits include a module that does not go to sleep, an aftermarket accessory, a faulty relay or an interior light switch. A workshop can measure the current drain and pull fuses one at a time to find it.
Electrical for other Discovery models
Other Discovery 4 systems
- Engine Parts
- Brakes
- Suspension
- Air Suspension
- Lighting
- Exhaust
- Transmission
- Cooling
- Fuel System
- Body Parts
- Interior
For how these parts work and the signs of wear, read the Land Rover electrical guide.
The right electrical for your Discovery 4
Share the VIN and engine number and the SparesBoyz parts team will check fitment before quoting.