Land Rover Crank No-Start in Miami: Diagnosing Fuel System Faults the Right Way (and Why SSM72117 Matters)

Green's Garage — a Coral Gables Land Rover specialist — shares a field guide to Range Rover and Land Rover fuel system faults, low and high pressure fuel pump failures, and the crank-no-start diagnosis that separates a one-trip repair from a parts-cannon disaster.

The complaint every Land Rover tech dreads: crank, no start

It usually arrives on a flatbed in the South Florida heat. A 5.0L supercharged Range Rover (L405), an LR4, or a Range Rover Sport that was cruising down Le Jeune Road or Miracle Mile yesterday and today will crank but not start. The owner swears it "just died." You hook up the scan tool and a wall of fuel-related DTCs scrolls past: low fuel rail pressure, fuel pump circuit faults, maybe a lost-communication code and a fuel level sensor complaint for good measure.

This is one of the most common — and most frequently misdiagnosed — driveability concerns we see at the bench. At Green's Garage, our independent Land Rover specialists in the Miami and Coral Gables area work these crank-no-start cases regularly on Jaguar Land Rover gasoline V6 and V8 direct-injection engines. The temptation is to read "fuel rail pressure too low," condemn the high pressure fuel pumps, and start quoting a four-figure repair. Sometimes that's right. Often it isn't. (And Miami's relentless heat soak is no friend to an aging in-tank fuel pump.)

The single most useful piece of guidance for working these cases is a Jaguar Land Rover service bulletin called SSM72117, and understanding what it tells you is the difference between fixing the car and guessing at it.

What SSM72117 actually says

SSM72117 — "3.0 & 5.0 Gasoline engines – High pressure fuel pump diagnostics" applies across a wide swath of the JLR gasoline lineup: LR4/L319, Range Rover L322 and L405, and Range Rover Sport L320 and L494. It was issued to update the high pressure fuel pump diagnostic routine in SDD (now Pathfinder).

The headline takeaway is buried in a note, and it's the most important sentence in the whole bulletin:

Address any low pressure fuel system DTCs before diagnosing the high pressure pumps — because low pressure faults can change how the high pressure pumps behave and lead you straight into a misdiagnosis.

Read that twice. JLR is openly warning technicians that a starving low pressure (in-tank) fuel pump will produce high pressure symptoms — low fuel rail pressure, rough running, crank no-start — that look exactly like dead engine-mounted pumps. If you skip the low pressure side, you can replace both high pressure fuel pumps, eat 7+ hours of labor, and still have a no-start.

The bulletin also points to the SDD/Pathfinder service-function test plan for isolating a faulty high pressure pump, references workshop section 303-04 for pump removal and installation, and includes a diagram of the two pumps' locations.

You can read the publicly filed (NHTSA) copy of the bulletin here:

SSM72117 (NHTSA filing SB-10103322-9340):https://static.nhtsa.gov/odi/tsbs/2014/SB-10103322-9340.pdf

⚠️ Pump numbering caution: SSM72117 labels Pump 1 as left/rear and Pump 2 as right/front. Some workshop component documents use the opposite convention (front = No.1, rear = No.2). Always identify the pumps by physical location, not just the printed label, before you order or condemn anything.

How the Land Rover fuel system actually works

To diagnose it, you have to understand the architecture. On the 5.0L supercharged AJ133 V8 (and the 3.0L AJ126 V6), this is a gasoline direct injection (GDI) system controlled by the ECM, and it has two distinct pressure domains:

Low pressure (LP) side

An in-tank low pressure fuel pump lifts fuel from the tank and feeds it forward to the engine. On these platforms the LP pump is typically managed by a fuel pump control module rather than a simple relay, giving the ECM demand-based control of supply. The in-tank module also houses the fuel level sensor — which matters when you see fuel-level DTCs in the mix. LP feed pressure is generally in the ~5 bar / 60-ish psi range; confirm the exact specification in your service data.

High pressure (HP) side

Two camshaft-driven high pressure fuel pumps — not one — take that LP feed and boost it to as much as 150 bar (about 2,175 psi). These are single-plunger pumps mounted on the right side of the sump body behind the generator, driven by a two-lobe cam on an auxiliary camshaft that is chain-driven off the crankshaft at engine speed. Each pump contains a fuel metering valve (ECM-controlled), a check valve, a damper chamber, and a pressure relief valve that opens at 250 bar.

Rail, crossover, and the FRPT sensor

The two HP pumps feed two stainless fuel rails connected by a crossover tube that equalizes pressure between banks. A Fuel Rail Pressure and Temperature (FRPT) sensor in the rear of the Bank 1 rail gives the ECM a continuous pressure and temperature signal — the value you live and die by during a no-start diagnosis. Eight direct injectors spray fuel straight into the combustion chambers.

The key mental model: the HP pumps can only pressurize what the LP pump delivers. Starve the inlet and every downstream pressure reading collapses — which is exactly why SSM72117 exists.

The fuel system fault codes you'll actually see

Land Rover DTCs carry a two-digit failure-type byte (FTB) after the dash. Here's how the common crank-no-start fuel codes break down (always confirm exact wording in your service data):

Notice the pattern. P0087 and P00C6 tell you the rail is low — but they don't tell you why. P0230, U053B, and P0461 all point back toward the in-tank module and its control circuit. A cylinder balance code like P0266 is very often a downstream symptom of fuel starvation, not a standalone injector problem — re-evaluate it only after pressure is restored.

When the low pressure and control-circuit codes keep company with the low-rail-pressure codes, SSM72117's logic kicks in: fix the LP side first.

A real-world tell: "it ran when we forced fuel"

Here's the classic clue that confirms a low pressure supply failure. Towed in as a crank-no-start; introduce fuel directly to the rail (a controlled prime, or a known-good supply) and the engine fires and runs. That single observation is enormously diagnostic: if the engine runs the moment fuel reaches it, the camshaft-driven HP pumps are mechanically fine and the problem lives upstream — the in-tank low pressure pump, the fuel pump control module, the wiring, or the network communication that commands them.

That's the scenario SSM72117 is built to catch. Replacing HP pumps here would be a textbook misdiagnosis.

The crank-no-start fuel diagnosis flow

A disciplined sequence that honors the bulletin:

1. Safety and setup

Connect a battery support unit. Treat the HP side as live — running pressure reaches ~2,175 psi and the relief valve opens at 250 bar — so depressurize the system before opening any high pressure line.

2. Capture the evidence

Pull all DTCs with current-vs-stored status and freeze frames. Log the FRPT sensor PID (rail pressure and temperature) during a crank event, and the LP pressure PID if your data supports it. Knowing which codes are live tells you what you're actually chasing.

3. Verify the basics first

Physically confirm there's fuel in the tank — don't trust the sender when P0461 is set. Check fuel quality (misfuelling and contamination are real). Verify fuel-pump-circuit fuses and feeds.

4. Work the low pressure side (per SSM72117)

• Command the low pressure fuel pump with a scan tool output test; listen at the tank and watch pressure build. Confirm LP delivery against the service spec while cranking.
• With a P0230 overcurrent byte, check in-tank pump current draw and the primary circuit for a short or a seizing pump, plus the control-module output and the tank-top connector.
• Chase U053B: verify power, grounds, and CAN integrity at the fuel pump control module, including connector corrosion. A module that's offline can't command the pump — which also explains the pump circuit code.

5. Re-test rail pressure

Once LP supply is verified good, recheck the FRPT during crank. P0087 and P00C6 should fall in line. Then re-scan and see whether the cylinder balance code (P0266) is still present before doing anything cylinder-specific.

6. Only now go to the high pressure pumps

If — and only if — the LP side is verified solid and rail pressure is still low on crank, run the SDD/Pathfinder HP pump test to isolate a bank, inspect the fuel metering valve, and check auxiliary (fuel pump) camshaft timing. A chain or fuel-pump cam that's out of time will produce low pressure even with perfectly good pumps — a documented L405 failure where the fuel-pump camshaft was found roughly 180° out of time. If the HP pumps are genuinely condemned, replace them as a pair given the shared access labor.

Common Land Rover fuel system failure points

When you're diagnosing a Range Rover or Land Rover crank-no-start, these are the usual suspects, roughly in the order SSM72117 would have you consider them:

• In-tank low pressure fuel pump — wear, failure, or overcurrent/seizing. The most overlooked root cause.
• Fuel pump control module / wiring / CAN — lost communication or circuit faults that prevent the LP pump from being commanded.
• Fuel level sender — sets P0461 and can mask an actual low-fuel condition.
• Fuel filter / contamination / misfuelling — cheap to check before condemning pumps.
• Fuel rail pressure (FRPT) sensor — a bad sensor reports false low pressure.
• High pressure fuel pumps (×2) — genuine failures happen and are a well-known weak point, but verify the LP side first.
• Fuel pump / auxiliary camshaft timing — out-of-time cam produces low pressure with healthy pumps.
• HP fuel pump metering valve — internal faults can drop rail pressure.

Frequently asked questions

What does a P0087 mean on a Range Rover? P0087 is "fuel rail/system pressure too low." On 5.0L and 3.0L gasoline JLR engines it's frequently blamed on the high pressure fuel pumps, but it can just as easily be caused by a failing in-tank low pressure pump, a clogged filter, contaminated fuel, or a faulty fuel rail pressure sensor. SSM72117 specifically warns to rule out low pressure faults first.

Why does my Land Rover crank but not start? A crank-no-start with fuel codes almost always means the engine isn't getting adequate fuel pressure at the rail. The fastest diagnostic shortcut: if the engine fires when fuel is introduced directly, the problem is on the low pressure supply side, not the high pressure pumps.

Should I replace both high pressure fuel pumps at once? If diagnosis confirms an HP pump failure, yes — they share the same labor-intensive access, so replacing them as a pair is standard practice. But confirm the failure with the SDD/Pathfinder test plan before committing; don't replace HP pumps to chase a low pressure or control-circuit fault.

Is there a TSB for Land Rover fuel pump diagnosis? Yes — SSM72117 covers high pressure fuel pump diagnostics for the 3.0L and 5.0L gasoline engines and instructs technicians to resolve low pressure fuel system DTCs first. A publicly filed copy is available through NHTSA.

Where can I get a Land Rover crank-no-start diagnosed in Miami?Green's Garage diagnoses Land Rover and Range Rover crank-no-start concerns for the Miami and Coral Gables area. As an independent Range Rover specialist, we run the JLR-approved diagnostic platform (Pathfinder/SDD), follow SSM72117's low-pressure-first logic, and have the tooling to safely test a high pressure fuel system. Proper diagnosis up front is what keeps a fuel-pump job from turning into a repeat visit.

The bottom line

Land Rover and Range Rover fuel system faults that present as a crank-no-start are a trap for the unwary. The codes scream "high pressure," but the root cause is frequently sitting in the fuel tank or in the fuel pump control circuit. SSM72117 exists precisely to keep you from misdiagnosing it. Honor its core instruction — clear the low pressure faults before you touch the high pressure pumps — and you'll turn an expensive guessing game into a clean, confident repair.

If your Range Rover, Range Rover Sport, or LR4 is cranking but won't start anywhere in Miami, Coral Gables, or the surrounding South Florida area, bring it to Green's Garage — where we diagnose Land Rover fuel systems the SSM72117 way, before anyone starts replacing pumps.

Independent service notice: This article is published by Green's Garage, an independent Land Rover and Range Rover repair specialist serving Miami and Coral Gables. Green's Garage is not affiliated with, authorized by, or endorsed by Jaguar Land Rover Limited. "Land Rover," "Range Rover," and bulletin references such as "SSM72117" are used solely to identify the vehicles and service information discussed; all trademarks are the property of their respective owners.

This article is intended as a general technical reference for diagnosing fuel system faults on Jaguar Land Rover gasoline direct-injection engines. Always work to the current service information, bulletins, and torque/pressure specifications for the specific VIN you are servicing, and observe all high pressure fuel system safety precautions.