Code P0087 reports that diesel pressure in the rail is lower than the control unit requires. It is a fault to take seriously: it often leads to loss of power, hard starting and stalling.
What code P0087 means
Fuel rail pressure too low.
Typical symptoms
- Loss of power or limp mode
- Hard starting or no start
- Engine suddenly stalls
- Jerking under acceleration
- Check engine light on
Most likely causes
| Cause | How common | What to do |
|---|---|---|
| Clogged fuel filter | Very common | Replace the filter and check the fuel |
| Weak low-pressure feed pump | Common | Check flow and replace |
| Pressure regulator or control valve | Common | Test and replace |
| Injectors with excessive return flow | Common | Return test and replace the faulty ones |
| Worn high-pressure pump | Less common | Replace, with a check of the whole system |
| Air in the circuit, leaks, rail pressure sensor | Less common | Bleed, repair or replace the sensor |
How it is diagnosed
- Read requested and actual rail pressure at idle and under load.
- Check the filter, feed pump and return line.
- Injector return test.
- Check the rail pressure sensor and regulator.
Can you drive with code P0087?
Better not: the car may stall while driving and you lose power steering and brake assistance. If the high-pressure pump is failing, carrying on can make it worse.
How much does it cost to fix?
| Work | Indicative cost |
|---|---|
| Fuel filter | €30-100 |
| Pressure regulator / valve | €100-350 |
| Feed pump | €150-500 |
| High-pressure pump | €600-1,500 and over |
Figures are indicative market ranges, useful for orientation: the real cost depends on model, engine, parts chosen and labour hours. For an exact quote we need the vehicle registration number.
How MasterTuning helps
We read the real values of the control unit, not just the code: that is the difference between finding the faulty component and replacing parts by trial and error. After the repair we clear the error and check that it does not come back. Find the nearest centre or contact us.
Got code P0087 on your car? Book a diagnosis at the nearest MasterTuning centre.
Frequently asked questions
What does P0087 mean?
That rail fuel pressure is too low compared with what the control unit requires.
What is the most common cause of P0087?
A clogged fuel filter, followed by a weak feed pump and injectors with excessive return flow.
Can I drive with P0087?
It is not recommended: the car may stall and the fault can get worse.
How much does it cost to fix P0087?
From €30-100 for the filter to €600-1,500 and over for the high-pressure pump: diagnosis decides.
