Ford P0087

Fuel rail pressure too low on Ford TDCi — usually a tired high-pressure pump or a leaking injector return on common-rail diesels.

Ford P0087 — Fuel rail pressure too low on Ford TDCi — usually a tired high-pressure pump or a leaking injector return on common-rail diesels. Typical UK independent garage cost: £140–£1800.

What actually causes P0087 on a Ford

Ford common-rail diesels log P0087 when actual rail pressure falls below the ECU's commanded value under load — symptom is a sudden loss of power and limp mode, often clearing on restart. On 1.6 TDCi (PSA DV6) it's typically excessive injector back-leak (leaky-off rate too high) or a worn HP pump regulator. On 2.2 TDCi Transits it's frequently a metering valve on the back of the pump.

Ford engines that log P0087

• 1.6 TDCi DV6 (Focus, Fiesta, C-Max)
• 2.0 TDCi (Mondeo, S-Max, Galaxy, Transit Connect)
• 2.2 TDCi (Transit, Ranger)

How we diagnose P0087 on a Ford

1. Read live rail pressure (commanded vs actual) under load — confirm the drop pattern
2. Carry out an injector leak-off test in hot and cold conditions
3. Check fuel filter age and condition — restricted filter is the cheapest cause
4. Test fuel inlet metering valve / pressure regulator electrical signal
5. Only after the above, pressure-test the HP pump itself

The common misdiagnosis to avoid

Don't let anyone fit a new HP pump (£900+) before a proper leak-off test on the injectors — a single sticky injector returning 3× spec will pull rail pressure flat and mimic a pump fault.

Ford P0087 repair cost in the UK

Expect £140–£1800 including parts and labour at an independent garage. Main-dealer quotes on Ford are usually higher for the same job, and the spread exists because the cheap cause and the expensive cause throw the same code — pay for the diagnosis before you pay for parts.

Bob's workshop tip

On 1.6 TDCi we still see customers paying for HP pumps when the real culprit is a £35 fuel filter that hasn't been changed in 60k miles. Always start with the cheap stuff.

Codes usually seen alongside P0087 on Ford

• P0088
• P0093
• P0191

Symptoms drivers report with P0087

• Sudden loss of power on the motorway — car drops into limp mode at exactly 2,500 RPM
• Restarts fine after a key-cycle, then relimps under load 20 minutes later
• Hard cold-starting: cranks for 4–6 seconds before catching
• Uneven idle with a diesel-knock 'nail' from cold
• MPG drops 3–7 mpg before the light even comes on
• Metal glitter in the fuel filter housing = CP4 pump has already grenaded

Repairs that clear P0087

• Replace fuel filter first (cheap, fast)
• Test rail pressure with scan tool
• Injector leak-off test (diesel)
• Replace HPFP only if proven by pressure test

For the generic, all-makes explanation of this code — meaning, every known cause and UK cost bands — see our P0087 guide.