P0011 on Mazda
Intake Camshaft Position Timing - Over-Advanced (Bank 1)
P0011 on Mazda vehicles indicates intake camshaft position timing - over-advanced (bank 1). Au7o has documented this code across 6 Mazda models — most commonly on CX-7, CX-9, Mazda3. P0011 means the engine computer detected that the intake camshaft timing on Bank 1 is more advanced than it should be — the variable valve timing system is either over-advancing the cam or not responding correctly to commands. Modern engines use a camshaft actuator, controlled by an oil-fed solenoid, to vary valve timing for better power and efficiency. When the actual cam position stays more advanced than the computer commands (or won't move back), this code is set. It generally indicates a fault in the variable valve timing system and can cause rough idle, reduced performance, or poor fuel economy. Typical repair costs on Mazda range from $300 to $3,500, depending on the specific model and root cause.
Common Causes of P0011
- •Stuck or faulty camshaft (VVT) oil control valve / solenoid
- •Low or dirty engine oil restricting actuator movement
- •Clogged oil control valve screen or oil passages
- •Faulty camshaft phaser / actuator stuck advanced
- •Wrong oil viscosity or overdue oil change
- •Wiring or connector fault to the VVT solenoid
- •Faulty camshaft position sensor
P0011 on Mazda by Model
Mazda CX-7(1 issue)
- VVT Actuator Failure2007-2012
The Variable Valve Timing (VVT) actuator on the 2.3L turbo engine can fail due to oil contamination, internal seal wear, or solenoid malfunction. A failed VVT actuator causes rough idle, poor performance, and check engine lights with timing-related codes. The VVT system relies on clean oil pressure to function, so oil contamination from extended oil change intervals accelerates failure. This issue often accompanies or precedes the larger turbo engine failure problem.
Mazda CX-9(1 issue)
- Timing Chain Stretch on 3.7L V62007-2015
The Ford-derived 3.7L Duratec V6 in first-generation CX-9 suffers from timing chain stretch, typically between 80,000-120,000 miles. Chain guides and tensioners wear, causing timing to retard and triggering check engine codes. If not addressed, can lead to jumped timing and severe engine damage.
Mazda Mazda3(1 issue)
- 2004-2011 Mazda3 MZR Engine Cold-Start Rattle from Variable Valve Timing Actuator Lock Pin2004-2011
On the MZR family (LF 2.0, L3 2.3, including the Mazdaspeed3 L3-VDT) the intake-side VVT actuator/cam phaser bleeds down when the engine sits. On the next cold start the lock pin does not fully engage - Mazda's own tech tip attributes it to insufficient clearance between the actuator and lever and to the lock-pin bore - so the phaser rattles against its stop and the timing chain slaps the cover for one to three seconds. Owners hear a loud diesel-like rattle or ticking at start-up that disappears once oil pressure builds. Left alone the actuator wears further and can eventually throw cam-correlation codes. Mazda revised the actuator (adding heat treatment around the lock-pin bore) on later production.
Mazda Mazda6(1 issue)
- Variable Valve Timing (VVT) Actuator Failure2009-2021
The exhaust-side VVT actuator (cam phaser) fails due to oil sludge and wear, causing timing codes and engine rattle. The actuator solenoid can also stick, leading to incorrect valve timing. Oil change neglect accelerates failure. Common on both MZR and early SkyActiv 2.5L engines.
Mazda Mazdaspeed3(1 issue)
- VVT Actuator Failure and Timing Chain Stretch2007-2013
The 2.3L DISI turbo engine's Variable Valve Timing (VVT) actuator has a known design weakness where an internal pin can come loose, causing the timing chain to slack. This leads to timing chain rattle, oil leaks, excessive exhaust smoke, and potentially catastrophic engine failure if the chain jumps timing. Mazda issued a Special Service Program (SSP) extending warranty coverage for VVT noise and timing chain issues on 2007-2010 models with the L3T engine. Mazda also released a revised VVT actuator design to address the failure.
Mazda Mazdaspeed6(1 issue)
- VVT Actuator / Timing Chain Noise on Cold Start2006-2007
On cold start the L3T 2.3L DISI engine often emits a loud ticking, rattling or 'diesel-like' knocking noise from the variable valve timing (VVT) actuator. The actuator has a lock pin that sets cold-start timing; the pin is harder than the surrounding aluminum and wears an elongated hole, so it no longer locks and rattles until oil pressure builds. The original timing chains were also poor quality and stretch more than they should, and a stretched chain plus worn tensioner compounds the noise. Both rely on oil pressure, which is why the noise appears cold and quickly fades.
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View P0011 across all makes →Frequently Asked Questions
What does P0011 mean on Mazda?▼
P0011 stands for "Intake Camshaft Position Timing - Over-Advanced (Bank 1)." P0011 means the engine computer detected that the intake camshaft timing on Bank 1 is more advanced than it should be — the variable valve timing system is either over-advancing the cam or not responding correctly to commands. Modern engines use a camshaft actuator, controlled by an oil-fed solenoid, to vary valve timing for better power and efficiency. When the actual cam position stays more advanced than the computer commands (or won't move back), this code is set. It generally indicates a fault in the variable valve timing system and can cause rough idle, reduced performance, or poor fuel economy. On Mazda specifically, this code is documented across 6 models.
What causes P0011 on Mazda vehicles?▼
Common causes on Mazda: Stuck or faulty camshaft (VVT) oil control valve / solenoid, Low or dirty engine oil restricting actuator movement, Clogged oil control valve screen or oil passages, Faulty camshaft phaser / actuator stuck advanced, Wrong oil viscosity or overdue oil change. Specific causes vary by model and year — see the per-model sections below.
How much does it cost to fix P0011 on a Mazda?▼
Repair costs on Mazda range from $300 to $3,500, depending on the specific model and root cause.
Which Mazda models have P0011 documented?▼
Au7o has documented P0011 on 6 Mazda models: CX-7, CX-9, Mazda3, Mazda6, Mazdaspeed3, Mazdaspeed6.