P0507 on Volkswagen: How to Diagnose & Fix
Idle Air Control System RPM Higher Than Expected
4 Volkswagen models · 4 documented issues · $50-$1,800 repair
P0507 on Volkswagen by model: symptoms, diagnosis and fix
The PCV (Positive Crankcase Ventilation) valve diaphragm in the Passat's 2.0T engine tears or deteriorates over time, causing a significant vacuum leak. This leads to rough idle, misfires, and excessive oil consumption. On TSI engines, the PCV is integrated into the valve cover, making it a more involved repair. The failure can also trigger the check engine light and cause a whistling noise from the engine.
Common Symptoms
- Rough idle
- Whistling noise from engine
- Check engine light
- Oil consumption increase
- Misfires at idle
How to Fix
On earlier FSI engines, the PCV valve can be replaced separately. On later TSI engines, the entire valve cover assembly must be replaced as the PCV is integrated. Use only OEM or high-quality aftermarket valve covers with metal PCV internals. Some aftermarket options offer a serviceable PCV to avoid future full valve cover replacements.
What you need to fix it
Only diagnosis- and fitment-reviewed repair parts are linked here.
- Genuine Volkswagen 06F129101R FSI pressure-regulator valve
replace the test-confirmed failed separately serviceable FSI pressure-regulator valve Fitment/availability: B6 Passat 2.0T FSI using the latest 06F129101R revision; confirm BPY engine, model-year revision and rear breather-pipe compatibi…
- Hamburg Tech 06H103495AH-KT TSI PCV and breather-hose kit
replace the early-TSI oil-separator valve and its matched breather hoses after pressure diagnosis Fitment/availability: B6 Passat 2.0T TSI using 06H103495AH, including matched CCTA/CBFA applications; vehicle-selector and installed-revisi…
- Genuine Volkswagen 06K103495AP oil-separator PCV valve
replace the test-confirmed failed Gen-3 oil-separator assembly without replacing a sound valve cover Fitment/availability: 2014-2017 North American Passat 1.8T Gen 3 branch using 06K103495AP or its listed supersessions; confirm CPRA/CPKA…
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Sources for this issue (2)
The PCV (Positive Crankcase Ventilation) valve diaphragm tears, causing a rough idle, oil leaks from various gaskets due to excessive crankcase pressure, and a check engine light. The PCV is integrated into the valve cover on the 2.5L engine.
Common Symptoms
- Rough idle
- Oil leaks from valve cover
- Whistling noise from engine
- Check engine light
- Oil consumption
How to Fix
Replace the PCV valve or the entire valve cover assembly (which includes the PCV on some revisions). Clear codes and verify crankcase pressure returns to normal.
What you need to fix it
Only diagnosis- and fitment-reviewed repair parts are linked here.
- Febi KIT-01355 PCV valve service kit
service a test-confirmed failed PCV diaphragm only when the valve cover remains structurally sound Fitment/availability: Volkswagen Rabbit 2.5L valve-cover PCV service application listed by the retailer; validate vehicle, original cover …
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The crankcase ventilation (PCV) valve, integrated into the valve cover/oil separator on the EA888 Gen3 (and carried into Gen4), commonly fails when the internal rubber diaphragm or check valve tears or sticks. This disrupts crankcase pressure regulation, causing rough idle, misfires, lean/rich fuel-trim codes, a whistling or sucking noise, and elevated oil consumption. Critically, a failed PCV can pull excessive vacuum and blow out the rear main seal, turning a cheap part failure into a labor-intensive oil leak that requires separating the transmission from the engine. Widely reported on MK7/MK7.5 Golf R (and the related GTI/S3) on VWVortex and EA888 specialist write-ups.
Common Symptoms
- Rough idle / misfire
- Whistling or sucking noise from valve cover
- High oil consumption
- Oil leak (rear main seal)
- Check engine light with fuel-trim codes
How to Fix
Confirm with a smoke/vacuum test and scan tool (lean/rich and idle codes). Replace the PCV valve / oil separator with the latest revised part (the assembly is held by ~9 T30 Torx screws under the engine cover) — a relatively inexpensive DIY. If a rear main seal leak has already developed, plan for transmission removal to reseal. Catch cans are sometimes fitted by enthusiasts but do not replace a failed PCV.
Sources for this issue (3)
The EA888's PCV (the integrated crankcase oil separator / pressure-regulating valve) develops a torn rubber diaphragm or stuck check valve. A torn diaphragm passes full intake-manifold vacuum to the crankcase, creating a large vacuum leak. Symptoms include rough/high idle, lean codes, whistling or hissing, oil leaks, and increased oil consumption. Severe cases can pull the rear main crankshaft seal off its mounting plate, turning a cheap part into an expensive repair.
Common Symptoms
- Rough or high idle
- Hissing/whistling vacuum noise
- Lean running / check engine light
- Increased oil consumption
- Oil leaks
- Rear main seal leak
How to Fix
Confirm via a vacuum/idle test or by checking for the characteristic torn diaphragm under the PCV cap. Replace the PCV/oil-separator unit with the latest revision (typically nine T30 Torx screws; a relatively low-cost DIY part). Clear codes and verify fuel trims and idle return to normal. If a rear main seal has been pulled, address that as well.
What you need to fix it
Only diagnosis- and fitment-reviewed repair parts are linked here.
- OE Supplier 06H103495AH PCV pressure-control valve and oil separator
replace a vacuum-test-confirmed failed integrated PCV/oil-separator assembly and gasket Fitment/availability: 2009-2015 Volkswagen CC 2.0T CBFA/CCTA using 06H103495AH or a listed superseded revision; VIN-specific and not verified here fo…
As an Amazon Associate, we earn from qualifying purchases; other part links may also earn au7o a commission. Confirm fitment by VIN before buying.
Sources for this issue (2)
P0507 code reference
General diagnostic-code context. The code alone does not confirm a cause for your vehicle; use the applicable issue card and its sources.
Frequently asked questions
What does P0507 mean on a Volkswagen?
P0507 stands for "Idle Air Control System RPM Higher Than Expected." This code means the engine is idling faster than the computer's target idle speed, typically by a set margin such as 200 RPM above commanded. The engine control module manages idle by metering a small amount of air around the throttle plate (via an idle air control valve or electronic throttle), and when it can't bring the RPM down to target it flags this code. The most common real cause is unmetered air sneaking into the intake — a vacuum leak — that the computer can't compensate for. It generally indicates extra air entering the engine or a problem with the idle/throttle control system. On Volkswagen it is documented across 4 models: Passat, Rabbit, Golf R, CC.
What are the most common causes of P0507?
The most common causes of P0507 are: Vacuum or intake air leak (hoses, gaskets, intake boot), Dirty or sticking throttle body or throttle plate, Faulty or stuck idle air control valve, Leaking intake manifold or throttle body gasket, Stuck-open PCV valve or cracked PCV hose, Dirty mass airflow sensor giving false readings, Failing throttle position sensor, Leaking brake booster or its vacuum hose. The specific cause varies by vehicle.
How much does it cost to fix P0507 on a Volkswagen?
Published repair estimates on Volkswagen range from $50 to $1,800 depending on the model and root cause. If an issue mentions a recall or campaign, check your VIN with the manufacturer or NHTSA and confirm eligibility and coverage with a dealer.
Looking for P0507 on a different make?
View P0507 across all makes →Content compiled with AI assistance using NHTSA complaints, TSBs, and owner reports. May contain errors. Always verify with your vehicle's service manual.