P0507 on MINI: How to Diagnose & Fix
Idle Air Control System RPM Higher Than Expected
1 MINI model · 1 documented issue · 1 critical · $250-$600 repair
P0507 on MINI by model: symptoms, diagnosis and fix
The N18 engine fitted to the GP2 is well-documented for crankcase ventilation (PCV) valve failure, where the valve integrated into the valve cover sticks or its internal membrane fails. A failed CCV causes excessive oil to be drawn into the intake manifold and combustion chambers, resulting in visible blue smoke from the exhaust and abnormally high oil consumption between service intervals.
Common Symptoms
- Blue or grey smoke from exhaust especially on startup
- Oil consumption exceeding 1 quart per 1,000 miles
- Oil residue visible in intake tract or intercooler pipes
- Rough idle due to oil fouling throttle body
- Check engine light with lean or misfire codes
How to Fix
Replace the valve cover with integrated PCV (OEM part 11127646552 for N18, verify by VIN). The repair also requires cleaning the intake manifold and throttle body of oil residue. Parts cost $80-$180; total repair including labor typically $250-$600 at an independent specialist.
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 MINI?
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 MINI it is documented across 1 model: GP.
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 MINI?
Published repair estimates on MINI range from $250 to $600 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.
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Content compiled with AI assistance using NHTSA complaints, TSBs, and owner reports. May contain errors. Always verify with your vehicle's service manual.