Section 05 · Failure Database

The Land Rover & Range Rover Failure Database

A permanent, UK-specific record of the failures that actually affect these vehicles — how often they happen, what they cost, and whether they're worth fixing. Every entry severity-rated on the same four-point scale.

A Land Rover engine partially disassembled in a specialist workshop, representing the failure database
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9,000+
UK Owner Enquiries
Analysed
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12
Vetted JLR
Specialists
📖
26
Documented
Failures
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Part of
Engine Finders
Network

Every documented Land Rover and Range Rover failure in one place, grouped by system, severity-rated, and costed from real 2025 UK enquiry data.

Browse by system below.

Engine Failures

The highest-cost, highest-consequence category — and the one this site was built around.

FailureAffected EnginesTypical Cost (S&F)Severity
306DT Crankshaft Bearing Failure306DT£6,500–£9,500Catastrophic
276DT Oil Pump Housing Failure276DT£5,000–£7,500Catastrophic
Ingenium Timing Chain Tensioner Wear204DTD£3,500–£5,800Immediate
AJ133 Chain Tensioner Wear (Pre-2013)AJ133£2,800–£4,500Monitor
Ingenium Oil Dilution204DTD£180–£900Monitor
K-Series Head Gasket FailureK-Series£900–£1,800Immediate
TD5 Injector Harness Oil MigrationTD5£280–£650Monitor
Rover V8 Cylinder Liner SlipRover V8£3,200–£6,000Catastrophic
Timing Chain Rattle — Diagnosis GuideCross-engineVariesMonitor

Emissions & Turbo

DPF Blockage

Immediate · £300–£1,800. The most common cause of restricted performance.

AdBlue / SCR Failure

Monitor · £350–£2,200. Often flags P20E8.

EGR Valve & Cooler Failure

Monitor · £400–£1,400. See P0401.

Turbocharger Failure

Immediate · £450–£2,400. See P0299.

448DT EGR & Swirl Flap

Monitor · Affects 448DT V8 diesels.

368DT Turbo & Injector Failure

Immediate · Affects 368DT TDV8.

Air Suspension

Compressor Failure

Catastrophic. The defining air suspension fault across the range.

Height Sensor Faults

Low. Often misdiagnosed as compressor failure.

Air Spring & Valve Block Leaks

Low. Common on higher-mileage L405 and L494.

Drivetrain

ZF 8-Speed Gearbox Faults

Monitor. Fitted across most modern Land Rovers.

Transfer Box & Differential Wear

Monitor. Aggravated by mismatched tyres.

Terrain Response System Faults

Low. Usually sensor or module related.

Electrical

Battery / Parasitic Drain

Low. Frequently triggers unrelated warning lights.

Infotainment & Software Glitches

Low. Often resolved by software update.

AJ20D6 Early-Build Issues

Monitor. Newer AJ20D6 — dataset still building.

Where To Start

This database assumes you already know what's wrong. If you don't, these are better starting points.

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Symptom Checker

Start from what you can hear, see or smell — 15 symptoms, each with ranked causes.

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Fault Code Index

Have a code from a scanner or garage printout? Start here.

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Warning Light Index

Dashboard lit up but no code yet? Work from the light.

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Ownership Economics

Diagnosed already, and wondering whether it's worth fixing.

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Data & Research

The enquiry data behind every severity rating and cost band here.

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How We Verify This

Our tagging system and what each data label actually means.

Real Failure DataEvery entry built on genuine 2025 UK owner enquiries.

Consistent Severity ScaleThe same four-point scale applied to every fault, no exceptions.

12 Vetted JLR SpecialistsReviewed by people who repair these faults daily.

100% IndependentNo sponsors, no manufacturer influence.

Found Your Fault?

Compare quotes from our vetted specialist network, or check whether the repair is worth it first.

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