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BMW 5 Series: N54 High-Pressure Fuel Pump Failure

N54 High-Pressure Fuel Pump Failure is a common engine fault on the BMW 5 Series on the 2007–2010 cars, and we rate it major. Putting it right costs ≈A$1,380 to ≈A$3,220 at independent workshop rates, shown as an approximate guide in Australian dollars. Below is what goes wrong, the symptoms to notice on a test drive, where to look, and what to ask the seller before you hand over any money. It is one of 62 documented faults on the BMW 5 Series.

Vehicle
BMW 5 Series
Engine
N54
Years
2007–2010
Fuel
petrol
System
Engine

This page covers the BMW 5 Series as a model. Some faults only affect particular engines or build years — enter a plate below to narrow the list to one car.

All BMW 5 Series faults62 documented faults on this model

What you are looking at

No photograph available

We do not hold a verified photograph of the High-pressure fuel pump yet. We would rather show none than show a picture of a different part.

What goes wrong

The N54 3.0-litre twin-turbocharged engine uses a cam-driven high-pressure fuel pump (HPFP) that suffers from premature cam follower and pump plunger wear. Fuel delivery pressure drops below the threshold required for combustion, causing stalling and no-start events. BMW issued Technical Service Bulletin SI B13 02 09 and extended warranty coverage for affected vehicles, but many Australian imports are now beyond that coverage window.

What you would notice

  • Sudden engine stall at speed with immediate restart possible
  • Hard to start or no-start when engine is warm
  • Hesitation and stumbling under acceleration
  • Check engine light with lean mixture or fuel rail pressure fault codes

How to check it

Where to look. High-pressure fuel pump mounted on top of engine, cam-driven

  1. Scan for fault codes 29DC (fuel pressure regulation), 2FBB (rail pressure), or 30BA.

  2. Check for any BMW dealer warranty repair history on the fuel pump.

  3. Test live fuel rail pressure under load — pressure should hold above 150 bar.

  4. Inspect for any fuel odour in the engine bay.

  5. Ask if the car has ever stalled unexpectedly.

Parts involved: High-pressure fuel pump.

What it costs to put right

≈A$1,380 to ≈A$3,220 at independent workshop rates, shown as an approximate guide in Australian dollars. That is for this job on its own, not for the car.

An estimate, converted to Australian dollars, for the repair as normally carried out. What a specific car costs depends on which part has failed and what it damaged on the way — treat this as the floor for a negotiation, not a quote.

Ask the seller

  • “Has the high-pressure fuel pump been replaced under warranty or as a paid repair?”
  • “Has the car ever stalled while driving or been difficult to start when warm?”
  • “Are there any stored or pending fuel system fault codes?”

Now check the BMW 5 Series you are actually looking at

Everything above is true of the model, and it is free. What it does not tell you is whether THIS car still has money owing on it, has been written off or reported stolen, what kms it showed in past sale ads, whether it has had accident repair claims and what it is worth today. That comes from the official records for that plate. Enter the plate and its state for the A$17.90 Vehicle Check, or the full history from A$24.99.

Where this comes from

The failure described above is documented in published sources — owner forums, technical service bulletins, recall notices and workshop write-ups — held in our fault database. The inspection instructions and the cost estimate are KickTyres’ own interpretation of them, and it is a starting point for an inspection rather than a manufacturer statement.

BMW 5 Series buyer questions

Is n54 high-pressure fuel pump failure serious on a BMW 5 Series?

We rate it major and common on the BMW 5 Series. The N54 3.0-litre twin-turbocharged engine uses a cam-driven high-pressure fuel pump (HPFP) that suffers from premature cam follower and pump plunger wear. Fuel delivery pressure drops below the threshold required for combustion, causing stalling and no-start events. BMW issued Technical Service Bulletin SI B13 02 09 and extended warranty coverage for affected vehicles, but many Australian imports are now beyond that coverage window.

How much does it cost to fix on a BMW 5 Series?

≈A$1,380 to ≈A$3,220 at independent workshop rates, shown as an approximate guide in Australian dollars. That figure is for this job on its own. A car showing the symptoms on this page is usually worth either walking away from or negotiating down by at least the repair figure.

Which BMW 5 Series years are affected?

Our research records this fault on the 2007–2010 BMW 5 Series. Build dates move around, especially on imported cars, so treat the range as the years to look hardest at rather than a guarantee either way. The official records tell you the exact build and first registration date for the car in front of you.

How do I check for it before I buy?

Scan for fault codes 29DC (fuel pressure regulation), 2FBB (rail pressure), or 30BA. Check for any BMW dealer warranty repair history on the fuel pump. Test live fuel rail pressure under load — pressure should hold above 150 bar. Inspect for any fuel odour in the engine bay. Ask if the car has ever stalled unexpectedly. Look here: High-pressure fuel pump mounted on top of engine, cam-driven