What Land Rover codes (P0420, P0087, P0299, P0430, P2002) actually mean on Land Rover engines — the real cause, the common misdiagnosis, and the honest UK repair cost.
These are the OBD fault codes we see most often on Land Rover vehicles in the workshop, with the real cause on Land Rover engines rather than the generic textbook definition, plus the honest independent-garage cost.
Land Rover fault codes explained
- P0420 — Catalyst efficiency on Land Rover — TDV6 3.0 diesel cat/DPF system and L322 petrol V8 cat failures. Typical UK cost £700–£3500.
- P0087 — Fuel rail pressure too low on Land Rover 2.7/3.0 TDV6 — Discovery 3/4 and Range Rover Sport HP pump shaft wear. Typical UK cost £700–£6500.
- P0299 — Turbo underboost on Land Rover 2.7/3.0 TDV6 — twin-turbo system imbalance or split intercooler hose. Typical UK cost £220–£2800.
- P0430 — Bank 2 cat efficiency on Land Rover 5.0 V8 / 3.0 V6 supercharged — Range Rover/Range Rover Sport. Typical UK cost £320–£3800.
- P2002 — DPF efficiency below threshold on Land Rover — 2.7/3.0 TDV6 and 2.0 Ingenium DPF clogged. Typical UK cost £260–£3200.
Codes are generic across manufacturers, but the fix is not. The same code on a Land Rover usually points at a different component than it would on another make, which is why a make-specific diagnosis saves money before any parts are bought.