Idle speed higher than expected on SEAT — Leon/Ibiza/Ateca PCV cracked diaphragm and intake hose.
SEAT P0507 — Idle speed higher than expected on SEAT — Leon/Ibiza/Ateca PCV cracked diaphragm and intake hose. Typical UK independent garage cost: £120–£480.
What actually causes P0507 on a SEAT
Leon Cupra P0507 is often a torn dump-valve diaphragm after spirited driving. Other SEATs follow VAG PCV pattern.
SEAT engines that log P0507
- 1.4 TSI EA111/EA211
- 1.8/2.0 TSI EA888
- 1.2 TSI
How we diagnose P0507 on a SEAT
- Smoke-test intake
- Inspect dump valve
- Rocker cover PCV inspection
The common misdiagnosis to avoid
Cupra owners with aftermarket dump valves often fit the wrong spec — back to OEM clears P0507.
SEAT P0507 repair cost in the UK
Expect £120–£480 including parts and labour at an independent garage. Main-dealer quotes on SEAT 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
Leon Cupra P0507 — check the dump valve before anything else on tuned cars.
Codes usually seen alongside P0507 on SEAT
- P0171
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.