P0012 on MINI: How to Diagnose & Fix
Intake Camshaft Position Timing - Over-Retarded (Bank 1)
5 MINI models · 6 documented issues · 4 critical · $200-$4,500 repair
P0012 on MINI by model: symptoms, diagnosis and fix
The R56 Cooper S N14 engine (2007-2010) is particularly notorious for timing chain tensioner failure, even more so than the naturally aspirated N12. The higher cylinder pressures from turbocharging accelerate chain stretch and guide rail wear. The revised N18 (2011-2013) improved but didn't fully resolve the issue.
Common Symptoms
- Loud rattling on cold start
- Check engine light
- Reduced power
- Engine misfire codes
- Metal debris in oil
How to Fix
Replace timing chain, tensioner, guides, and sprockets. N14 engines should have this done proactively at 50-60k miles. N18 engines are better but should be inspected at 80k. Replace oil pump chain at the same time.
What you need to fix it
Only diagnosis- and fitment-reviewed repair parts are linked here.
- MINI N14 timing-chain kit 11318618317KTOEMFCP Euro 11318618317KT / MINI 11318618317
VIN-confirmed N14 timing-chain, guide and tensioner failure branch Fitment/availability: The inspected direct U.S. Confirm VIN and kit contents before purchase; it is not the N18 branch a
- MINI N18 timing-chain kit 11318618318KT1OEMFCP Euro 11318618318KT1 / MINI 11318618318
VIN-confirmed N18 timing-chain, guide and tensioner failure branch Fitment/availability: The inspected direct U.S. Confirm VIN and kit contents before purchase; do not use it for N14 or
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The R56 Cooper's N12 and N16 engines suffer from premature timing chain tensioner and guide rail failure. The plastic chain guides deteriorate, causing chain slack that leads to rough running, rattling on startup, and potential catastrophic engine damage if the chain jumps timing.
Common Symptoms
- Rattling noise on cold start
- Check engine light
- Rough idle
- Loss of power
- Engine misfire
How to Fix
Replace timing chain, tensioner, and guide rails. Use updated BMW/MINI parts with revised guide rail material. The entire front of the engine must come apart. Recommend replacing water pump and thermostat at the same time.
What you need to fix it
Only diagnosis- and fitment-reviewed repair parts are linked here.
- MINI N12/N16 timing-chain kit 11318618318KTOEMFCP Euro 11318618318KT / MINI 11318618318
VIN-confirmed naturally aspirated N12/N16 timing-chain, guide and tensioner repair branch Fitment/availability: The inspected direct U.S. Confirm VIN and engine before purchase; it does not esta
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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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Same timing chain issue as the Cooper S. The N14 and N18 turbo engines develop timing chain stretch and tensioner failure.
Common Symptoms
- Chain rattle on startup
- Check engine light
- Rough running
- Loss of power
How to Fix
Sources for this issue (1)
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)
The R60 Countryman's Prince-family engines (N16 naturally aspirated, N18 turbo, co-developed by BMW and PSA) use a timing chain with plastic guides and a hydraulic tensioner that are chronically under-specified. The tensioner bleeds down at rest and the chain guides wear and crack, letting the chain slap on cold start. Over time the chain stretches, retards cam timing relative to the crank, and in the worst cases jumps teeth or snaps outright, bending valves and destroying the interference engine. Owners report the classic 'death rattle' at cold start for months before catastrophic failure, and NHTSA complaints document chains stretched far enough to damage the eccentric (Valvetronic) shaft. BMW quietly revised the tensioner and chain design mid-cycle and lost class-action litigation over the same defect in sibling MINI models, but the Countryman was never recalled for it.
Common Symptoms
- Loud rattle or 'diesel-like' clatter from the front of the engine for 2-5 seconds on cold start
- Rattle at idle that quiets when revved
- Check engine light with camshaft/crankshaft correlation codes
- Loss of power, rough running, or limp mode
- Engine suddenly shuts off while driving and will not restart
- Metallic debris or plastic chain-guide fragments in the oil filter or pan
How to Fix
Do not ignore a cold-start rattle. Have the chain, tensioner, both guides, and the crank/cam sprockets replaced as a complete kit with the revised BMW/MINI parts — replacing only the tensioner is a temporary fix. Verify the Valvetronic eccentric shaft and its sensor for wear while the front cover is off. Preventively, shorten oil-change intervals to roughly 5,000 miles with a correct-spec low-ash oil (the factory 10,000+ mile interval is a major contributor to guide and tensioner wear), and address any oil-level or oil-pressure warning immediately. If the chain has already jumped, a compression/leak-down test is required before rebuilding — bent valves are common.
What you need to fix it
Only diagnosis- and fitment-reviewed repair parts are linked here.
- MINI N16 timing-chain kit 11318618318KTOEMFCP Euro 11318618318KT / MINI 11318618318
VIN-confirmed R60 N16 timing-chain, guide and tensioner failure branch Fitment/availability: The inspected direct U.S. Confirm VIN, engine and kit contents; do not use it for N18 or assume it includ
- MINI N18 timing-chain kit 11318618318KT1OEMFCP Euro 11318618318KT1 / MINI 11318618318
VIN-confirmed R60 N18 timing-chain, guide and tensioner failure branch Fitment/availability: The inspected direct U.S. Confirm VIN and kit contents; do not use it for N16 or assume it co
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)
P0012 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 P0012 mean on a MINI?
P0012 stands for "Intake Camshaft Position Timing - Over-Retarded (Bank 1)." This code means the intake camshaft timing on Bank 1 is more retarded than the computer commanded — the variable valve timing system isn't reaching its target position. The computer controls camshaft timing through an oil-fed actuator (cam phaser) and a control solenoid; when actual timing lags the desired setting, this code sets. It is commonly caused by oil flow problems (low, dirty, or wrong oil), a stuck solenoid, or a worn cam phaser. Symptoms can include rough idle, reduced power, poor fuel economy, and sometimes rattling on startup. On MINI it is documented across 5 models: Cooper S, Cooper, Coupe, GP, Countryman.
What are the most common causes of P0012?
The most common causes of P0012 are: Low, dirty, or incorrect-viscosity engine oil, Faulty or stuck intake camshaft (VVT) oil control solenoid, Worn or stuck camshaft phaser/actuator, Clogged solenoid screen or oil passages, Wiring or connector problems at the solenoid, Timing chain wear or stretch affecting cam timing, Faulty camshaft position sensor. The specific cause varies by vehicle.
How much does it cost to fix P0012 on a MINI?
Published repair estimates on MINI range from $200 to $4,500 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 P0012 on a different make?
View P0012 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.