What are the signs of BECM failure in a Range Rover Sport P440e-

The Battery Energy Control Module (BECM) is a known weak point on P440e models. Common symptoms include: 'Hybrid System Fault' warning on the dashboard, vehicle refuses to charge or charging stops prematurely, car won't enter 'Ready' mode or start, red battery warning light, and zero electric range - vehicle runs on petrol only.

How long does a Range Rover Sport P440e engine replacement take-

A full Range Rover Sport P440e engine replacement typically takes 5-10 working days. Engine removal and installation takes 2-3 days, hybrid system re-calibration and testing takes 1-2 days, with total turnaround 5-10 days depending on parts availability.

What's the difference between the P440e and P510e engines-

Both are 3.0-litre Ingenium I6 PHEV engines in the L461 Range Rover Sport. The P440e produces 440PS (434bhp) combined output, while the P510e produces 503bhp combined output - a higher tune of the same engine. Both use the same AJ300 engine block and 105kW electric motor, with the P510e having higher boost and revised ECU mapping.

Does the Range Rover Sport P440e have timing chain problems-

Timing chain tensioner wear has been reported on Ingenium petrol engines, including the AJ300 in the P440e. Symptoms include rattling noise on cold start, rough running, and reduced performance. Preventative replacement at 60,000-80,000 miles is recommended, costing £1,800-£3,000 at a specialist. Ignoring it can lead to catastrophic engine failure.

Range Rover Sport P440e Specialists

Range Rover Sport P440e Engine Replacement Compare Prices & Get Quotes

Get free, no-obligation quotes from trusted UK Range Rover Sport P440e specialists. Compare prices on reconditioned, rebuilt and used P440e hybrid engines - all with transparent pricing and 12-month warranty options.

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Range Rover Sport P440e Engine

from£5,500 to £9,500

Usedfrom £2,800
Reconditionedfrom £5,500
Common codesAJ300

Land Rover range-rover-sport P440e Used Engine — AJ300

Land Rover range-rover-sportUsed Engine — AJ300

Land Rover range-rover-sport P440e Reconditioned Engine — AJ300

Land Rover range-rover-sportReconditioned Engine — AJ300

Land Rover range-rover-sport P440e Rebuilt Engine — AJ300

Land Rover range-rover-sportRebuilt Engine — AJ300

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How it works

3 Simple Steps to Finding the Right Replacement Engine

Clear information first, then the right engine and specialist for your exact vehicle.

Variant History

Range Rover Sport P440e Engine History & Specs at a Glance

The Range Rover Sport P440e debuted with the third-generation L461 model in 2022, marking Land Rover's commitment to electrified performance in its sportiest SUV. Unlike earlier Sport models powered by diesel V6s or supercharged V8s, the P440e combines a 3.0-litre straight-six Ingenium petrol engine with a plug-in hybrid system - a powertrain configuration unique to this generation.

2022
AJ300 Ingenium I6 3.0-litre turbocharged petrol PHEV launched with the all-new L461 Range Rover Sport. Total system output: 440PS (434bhp) with a 105kW electric motor and 38.2kWh battery.
2023
2024 - P440e continues as a core PHEV offering across SE, Dynamic SE and Autobiography trim levels. Electric-only range of approximately 70 miles (113km).
2025
2026 - Minor software updates to hybrid management system; battery and electric motor specifications remain unchanged through the L461 generation.

Every engine fitted to the Range Rover Sport P440e is covered below, with UK rebuilt pricing and known failure points for this specific PHEV powertrain.

Engine Codes & Pricing

Range Rover Sport P440e Engine Codes Specifications & Replacement Cost

Find your exact engine code, specs and UK replacement cost guide.

AJ300 — 3.0-litre Petrol Plug-in Hybrid (2022-present)

Power Output: 440PS (434bhp) combined; 3.0-litre Ingenium I6 petrol engine + 105kW electric motor
Years Fitted: 2022-present

Can’t find your exact engine code?-> Get quotes for AJ300 Range Rover Sport P440e engine replacement

-> Get quotes for AJ300 Range Rover Sport P440e engine replacement

Common Problems

Range Rover Sport P440e Engine Problems Repair Cost vs Replacement

The Range Rover Sport P440e uses the AJ300 3.0-litre Ingenium I6 petrol engine paired with a 105kW electric motor and 38.2kWh battery. While the Ingenium petrol six-cylinder is more reliable than its diesel siblings, PHEV-specific components introduce additional failure points. Rebuilt AJ300 engines through EnginesMarket include upgraded components addressing the original failure points, plus a minimum 12-month unlimited-mileage warranty.

Common failure points and repair options

BECM Failure

Affected: Range Rover Sport P440e (AJ300, 2022-present)
Typical failure mileage: 20,000-60,000 miles

Root cause

The Battery Energy Control Module (BECM) controls the high-voltage battery charging process and hybrid system operation. Internal electronic failure prevents the vehicle from charging, entering 'Ready' mode, or using electric drive.

Repair options

Repair tier	Dealer price	Specialist price
BECM replacement only	£1,200-£2,500	£800-£1,800
Full replacement - rebuilt AJ300 engine	£12,000-£18,000	£7,500-£9,500

Our recommendation

If your P440e displays a 'Hybrid System Fault' warning or refuses to charge, have the BECM diagnosed before assuming engine replacement is needed. BECM replacement is significantly cheaper than a full engine swap. However, if the engine has suffered timing chain failure or internal damage from running without hybrid assistance, a rebuilt AJ300 unit with upgraded components and 12-month warranty is the sensible long-term solution.

-> Compare rebuilt AJ300 Range Rover Sport P440e engine prices

Timing Chain Tensioner Wear

Affected: Range Rover Sport P440e (AJ300, 2022-present)
Typical failure mileage: 50,000-80,000 miles

Root cause

Ingenium petrol engines use timing chains rather than belts. Chain tensioner wear can cause the chain to slacken, leading to a rattling noise on cold start, rough running, and in severe cases, catastrophic engine failure if the chain jumps or breaks.

Repair options

Repair tier	Dealer price	Specialist price
Timing chain & tensioner replacement	£2,500-£4,500	£1,800-£3,000
Full replacement - rebuilt AJ300 engine	£12,000-£18,000	£7,500-£9,500

Our recommendation

Address any rattling noise from the engine bay immediately. Early timing chain replacement (£1,800-£3,000 at a specialist) is far cheaper than a full engine rebuild (£7,500-£9,500) if the chain fails catastrophically. Use a JLR specialist familiar with Ingenium engines - they'll know the specific tensioner revisions and can fit upgraded parts.

-> Compare Range Rover Sport P440e timing chain repair costs

Don't Let Engine Failure Write Off Your Range Rover Sport P440e

The Range Rover Sport P440e is a complex, high-value PHEV - but engine failure doesn't have to mean the end of the road. Whether it's BECM failure, timing chain wear, or a full rebuild, EnginesMarket connects you with vetted UK specialists who know the AJ300 Ingenium I6 inside out. Every rebuilt engine comes with a minimum 12-month unlimited-mileage warranty, upgraded components addressing the original failure points, and nationwide delivery options.

Compare Range Rover Sport P440e Engine Replacement Prices Now ->

FAQ

Range Rover Sport P440e Engine ReplacementFrequently Asked Questions

Everything Range Rover Sport P440e owners usually ask before choosing a rebuilt, reconditioned or used replacement engine.

A rebuilt AJ300 3.0-litre Ingenium I6 engine for the Range Rover Sport P440e typically costs £7,500-£9,500 supply-only, with fitting adding approximately £1,000-£1,500 at a specialist. Dealer prices can reach £12,000-£18,000 for a full replacement.

Used AJ300 engines: £2,800-£4,500
Reconditioned units: £5,500-£8,000
Rebuilt with 12-month warranty: £7,500-£9,500

-> Get a personalised Range Rover Sport P440e engine quote

Yes - a 2022-2024 Range Rover Sport P440e typically holds £55,000-£90,000 of value. Even a full engine replacement at £7,500-£9,500 represents a small fraction of the vehicle's worth. For older examples approaching £40,000-£50,000, the replacement still makes financial sense if the rest of the vehicle is in good condition.

Newer P440e (2022-2024): replacement strongly recommended
Higher-mileage examples: weigh against overall vehicle condition

-> Compare P440e replacement vs repair costs

Timing chain tensioner wear has been reported on Ingenium petrol engines, including the AJ300 in the P440e. Symptoms include rattling noise on cold start, rough running, and reduced performance.

Preventative replacement at 60,000-80,000 miles recommended
Cost: £1,800-£3,000 at a specialist
Ignoring it can lead to catastrophic engine failure

-> Get timing chain inspection for your Range Rover Sport P440e

Why Choose Us

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Comparing Range Rover Sport P440e engine quotes is free, fast, and carries no obligation. Enter your registration above to get matched with vetted UK specialists who supply the correct AJ300 Ingenium I6 unit for your exact P440e - whether you need a used engine, a reconditioned unit, or a full rebuild with warranty.

250+250+ P440e-compatible engines supplied through our network

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