Land Rover and Range Rover vehicles are among the most capable off-road vehicles available, but their complex electronic systems and luxury features mean they have an extensive list of possible dashboard warnings. This guide covers the most common Land Rover-specific warning lights and how to approach diagnosis.
Check Engine Light
Common triggers on Land Rover vehicles include EGR valve faults (particularly on the TDV6 and Ingenium diesel engines), turbo boost control faults, inlet manifold flap motor failures (a known issue on the 2.2L and 3.0L TDV6 diesels), lambda sensor codes, and crankcase ventilation system faults. The Ingenium 2.0L diesel is known for DPF-related codes when used predominantly for short trips. Land Rover uses both standard OBD-II codes and manufacturer-specific JLR codes that require the workshop manual or a JLR-compatible diagnostic tool.
HDC Warning (Hill Descent Control)
Land Rover’s Hill Descent Control is an electronic system that automatically controls vehicle speed on steep descents. The HDC warning light may flash or illuminate if there is a fault in the ABS system (HDC relies on ABS to function), wheel speed sensor issues, or a brake system fault. Since HDC shares components with ABS and stability control, an HDC warning often accompanies ABS or DSC fault codes.
Terrain Response Fault
Land Rover’s Terrain Response system adjusts throttle response, transmission behaviour, and traction control settings for different surfaces. A Terrain Response fault warning can indicate a faulty selector switch (the rotary dial or button panel), a control module issue, or a fault in one of the systems that Terrain Response controls (air suspension, differential locks, stability control). Your workshop manual includes the Terrain Response diagnostic procedure.
Air Suspension Warnings
Many Land Rover and Range Rover models use electronic air suspension. Common warnings include “Suspension Fault” (can indicate a leaking air spring, failing compressor, or height sensor fault), “Normal Height Only” (the system has defaulted to a safe ride height due to a fault), and “Do Not Exceed XX km/h” (the suspension cannot adjust and the vehicle may be stuck at an incorrect height). Air spring leaks are common on older models, particularly at the crimped joints where the air bag meets the top and bottom mountings. The compressor can also fail from overwork if a leak forces it to run continuously.
DPF and AdBlue Warnings (Diesel)
Land Rover diesel models have both DPF and AdBlue (SCR) systems. The DPF requires highway driving for regeneration (see our DPF guide). The AdBlue system will restrict engine starting if the tank runs empty. Land Rover diesel engines require oil meeting the ACEA C5 or specific JLR specification to prevent premature DPF blocking.
Diagnostic Resources
Land Rover vehicles use extensive manufacturer-specific fault codes. A JLR-compatible diagnostic tool provides access to all modules. Browse our workshop manual catalogue at mechanicmate.net/shop.
— MechanicMate . Questions or a second opinion? [email protected].