Volkswagen P0507

Idle speed above expected range on VW — vacuum leak (PCV, intake manifold gasket) is the headline cause.

Volkswagen P0507 — Idle speed above expected range on VW — vacuum leak (PCV, intake manifold gasket) is the headline cause. Typical UK independent garage cost: £80–£480.

What actually causes P0507 on a Volkswagen

VW P0507 means the ECU has had to throttle down further than expected to control idle — usually because a vacuum leak is letting extra air past the throttle body. PCV diaphragm failures and intake manifold gasket leaks are the two most common causes on TSI. Throttle body coking is a distant third.

Volkswagen engines that log P0507

• 1.4/1.8/2.0 TSI EA888
• 1.2/1.4 TSI EA111
• 1.6 FSI / MPI

How we diagnose P0507 on a Volkswagen

1. Smoke-test the intake from PCV to inlet manifold
2. On EA888, inspect PCV diaphragm (top of cam cover)
3. Check intake manifold gasket for vacuum weep
4. Inspect brake servo hose and check valve
5. Clean throttle body and reset adaptations via VCDS if other causes excluded

The common misdiagnosis to avoid

Don't replace a throttle body for P0507 before smoke-testing the intake — VAG PCV failures throw the same symptoms and are the actual fault 80% of the time.

Volkswagen P0507 repair cost in the UK

Expect £80–£480 including parts and labour at an independent garage. Main-dealer quotes on Volkswagen 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

VAG PCV failures are so common that any P0507 + lean code combo on EA888 is PCV until proven otherwise — £180 cam cover assembly fixes the lot.

Codes usually seen alongside P0507 on Volkswagen

• P0171
• P0174
• P052E

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.

Reading P0507 on a Volkswagen properly

A generic reader will show P0507 and nothing else. What matters is the freeze-frame data stored with it — engine speed, load, coolant temperature and fuel trims at the moment the fault was logged — plus whether any other module on the Volkswagen has logged something at the same time. Codes rarely arrive alone, and the order they were stored in usually points at which one is the cause and which are the consequences.

Clearing P0507 without fixing it

Erasing the code resets the Volkswagen's readiness monitors as well as the light. The fault returns on the next drive cycle if the cause is still there, and in the meantime the incomplete monitors can stop the car passing an emissions check. After a genuine repair, the car is driven until the relevant monitor completes before it is handed back.

Bob's Mechanical Repairs is an independent garage in Birnam, Dunkeld, Perthshire, with 32 years of Bob's experience on the tools. If P0507 is showing on your Volkswagen, bring any scan results with you — we will read the live data ourselves, confirm which cause it actually is, and price the repair before any work starts.