P0015: How to Diagnose & Fix — Exhaust Camshaft Position Timing - Over-Retarded (Bank 1)
5 vehicles · 3 makes · $100-$32,000 repair
How to diagnose and fix P0015: most-reported vehicles
Ranked by owner reports. Each card gives the symptoms, how to confirm the cause, the fix, parts and sources for that vehicle.
MINI Cooper · 2007–2016
The valve cover gasket on N12/N16/N18 engines hardens and leaks oil onto the exhaust manifold, creating a burning oil smell. VANOS solenoid seals also leak, causing oil to pool around the solenoids and potentially cause misfires.
Common Symptoms
- Burning oil smell
- Oil on exhaust manifold
- Visible oil leak from valve cover
- Check engine light
- Rough idle
How to Fix
Replace valve cover gasket (the cover and gasket are one unit on these engines) and VANOS solenoid O-rings. Clean oil residue from exhaust manifold.
What you need to fix it
Only diagnosis- and fitment-reviewed repair parts are linked here.
- Genuine MINI valve-cover profile gasket set 11127567877OEMMINI 11127567877
Confirm VIN, engine and that the cover itself is n
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BMW M5 · 2006–2010
The S85 engine uses high-pressure VANOS (Variable Valve Timing) pump to supply necessary hydraulic pressure. The high-pressure VANOS line can leak oil at the fittings between its hard pipe and flexible hose sections; BMW issued a service bulletin (SIB 11 10 05) to replace the line on M5s produced up to 11/22/05. When VANOS line fails and leaks, it can starve VANOS pump of pressure, causing pump failure and sending metal debris throughout engine. This can escalate to CATASTROPHIC engine damage requiring complete engine replacement ($32,000). M5Board warns: DO NOT ignore VANOS line leaks - this can destroy entire engine within weeks.
Common Symptoms
- Rough idling and unstable idle speed
- Reduced power output and poor acceleration
- Poor fuel economy
- Rattling or grinding noise from engine bay at startup
- Oil leaks visible near front of engine (VANOS area)
- Check engine light with VANOS-related fault codes
How to Fix
Replace high-pressure VANOS line with updated design that includes proper bend radius ($3,000 parts + labor). Replace VANOS high-pressure pump if showing signs of wear or contamination. DrVanos offers fully rebuilt S85 VANOS pumps ($1,800 + $400 core deposit) - M5Post gold standard for rebuilds. This repair is BEST performed simultaneously with rod bearing replacement to save on overlapping labor costs ($2,000-$4,000 savings). WARNING: DO NOT ignore VANOS line leaks - metal debris from failed pump circulates through entire lubrication system and can destroy engine. If catastrophic failure: engine replacement required ($32,000).
What you need to fix it
Only diagnosis- and fitment-reviewed repair parts are linked here.
- Genuine BMW S85 VANOS oil line 11367838669OEM11367838669
The retailer specifies four 07119963129 copper washers and one 11367834552 O-ring as additional required items; verify VIN and the exact failed line..
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Sources for this issue (3)
MINI GP · 2013–2023
The VANOS (variable valve timing) solenoids on both the N18 engine (GP2, 2013-2015) and B48 engine (GP3, 2020-2023) are susceptible to failure from oil contamination and varnish buildup. When the solenoids stick or fail, the ECU cannot properly control cam timing, resulting in rough idle, poor throttle response, and reduced performance. The high-output tuning of the GP engines makes them less tolerant of degraded VANOS performance compared to standard MINI models.
Common Symptoms
- Check engine light with VANOS codes
- Rough or unstable idle
- Loss of low-end torque
- Hesitation on throttle tip-in
- Rattling noise from engine on cold start
- Reduced fuel economy
How to Fix
Replace the VANOS solenoid(s) — typically two on these engines ($80-$150 each). Clean the VANOS oil filter screens during replacement. Use OEM or quality aftermarket solenoids (Pierburg is the OEM supplier). Prevent issues with frequent oil changes every 5,000 miles using BMW LL-01 approved 5W-30 synthetic oil. Some owners clean solenoids ultrasonically as a temporary measure, but replacement is the reliable fix.
What you need to fix it
Only diagnosis- and fitment-reviewed repair parts are linked here.
- Genuine MINI N18 VANOS solenoid 11368610388OEMMINI 11368610388
Confirm GP2 VIN and intake/exhaust position; quantity is ba
- Genuine MINI/BMW B48 VANOS actuator 11367614288OEMMINI/BMW 11367614288 (supersedes 11368482268 where cataloged
Confirm VIN and failed actuator/pos
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Owner tips & cautions
- TipChange oil every 5,000 miles, NOT the BMW-recommended 15,000. The GP engines run hot and hard — extended oil change intervals are the number one cause of VANOS solenoid failure.
Sources for this issue (1)
BMW Z4 · 2003–2016
Hyundai Santa Fe · 2007–2019
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P0015 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 P0015 mean?
P0015 stands for "Exhaust Camshaft Position Timing - Over-Retarded (Bank 1)." This code means the exhaust camshaft on Bank 1 is timed more retarded (later) than the computer commanded. Engines with variable valve timing use a cam phaser, controlled by oil pressure and a solenoid, to advance or retard camshaft position for better power, economy, and emissions. When the computer commands a position but the actual exhaust cam stays too far retarded, it sets P0015. This usually points to an oil-flow or phaser problem and can cause rough idle, reduced power, and poor fuel economy.
What are the most common causes of P0015?
The most common causes of P0015 are: Low or dirty engine oil restricting phaser operation, Stuck or clogged variable valve timing (oil control) solenoid, Failed exhaust camshaft phaser/actuator, Clogged oil control valve screen or oil passages, Stretched or worn timing chain, Wiring or connector fault at the VVT solenoid, Incorrect cam timing from prior service, Faulty PCM/ECM (rare). The specific cause varies by vehicle.
How much does it cost to fix P0015?
Repair costs for P0015 range from $100 to $32,000, depending on the vehicle and root cause.
Which vehicles are affected by P0015?
Au7o has documented P0015 across 5 vehicle models from 3 manufacturers: BMW, Hyundai, MINI.
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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.