Bob's Mechanical Repairs

Ford P0507

Bob's Mechanical Repairs — independent family-run garage in Birnam, Dunkeld, Perthshire. Call 01350 727 276 or email [email protected].

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Idle speed higher than expected on Ford — vacuum leak via dump valve or PCV on 1.0/1.5/1.6 EcoBoost.

Ford P0507 — Idle speed higher than expected on Ford — vacuum leak via dump valve or PCV on 1.0/1.5/1.6 EcoBoost. Typical UK independent garage cost: £35–£280.

What actually causes P0507 on a Ford

EcoBoost P0507 mirrors P2279 — perished dump-valve diaphragm or split silicone elbow. The ECU loses control of idle because un-metered air enters the intake. Smoke test in 10 minutes.

Ford engines that log P0507

  • 1.0 EcoBoost
  • 1.5/1.6 EcoBoost
  • 2.0 EcoBoost

How we diagnose P0507 on a Ford

  1. Smoke-test full intake system
  2. Inspect dump valve diaphragm
  3. Check PCV hose for splits and oil filler cap seal
  4. Reset idle adaptation after repair

The common misdiagnosis to avoid

Throttle body cleaning is not the answer — clean it if dirty, but the leak still needs fixing. Smoke-test every P0507 on Ford.

Ford P0507 repair cost in the UK

Expect £35–£280 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

EcoBoost P0507 — leak first, throttle clean second. Adaptation reset last or new readings get corrupted by the old leak.

Codes usually seen alongside P0507 on Ford

  • P0171
  • P2279

Symptoms drivers report with P0507

  • The car feels like it's 'creeping' forward too fast at traffic lights without touching the gas.
  • Engine revs stay hung up at 1200rpm when you dip the clutch approaching an intersection.
  • A noticeable 'hissing' or whistling noise from the engine bay when idling on the driveway.
  • The stop-start system has stopped working because the idle isn't stable enough for the ECU.
  • Surging or 'hunting' revs when you first start it from cold in the morning.

Repairs that clear P0507

  • Smoke-test intake
  • Clean throttle body
  • Replace PCV valve / rocker cover
  • Inspect all vacuum hoses

For the generic, all-makes explanation of this code — meaning, every known cause and UK cost bands — see our P0507 guide.

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