Here’s a detailed write-up on exactly how VVT works if you’re interested in learning more. Some simpler systems change the cam timing, while others change cam profiles entirely. They are hydraulic, which means that they use the vehicle’s engine oil to change the intake valve timing. Valve timing control methods can be quite different for every engine, even from the same manufacturer, but the basics are the same.Ĭamshaft actuators or phasers change how long the intake and exhaust valves stay open. When this happens, your Chevy Cruze will store trouble code P0011. Sometimes, the system will get stuck in an over-advanced position. VVT allows the engine to act as though it has different camshaft profiles at different RPMs this is great for both power and fuel economy. Vehicles with VVT can change camshaft position timing depending on whether you need power or economy. The camshaft’s position is constant relative to the crank’s position on vehicles that don’t have variable valve timing. Camshaft Position TimingĬamshaft position timing how your Chevy Cruze’s intake and exhaust valves close relative to the location of the crankshaft. Here it is separated into its separate pieces, with a quick explanation of each. The technical definition of P0011 for the Cruze is “A” Camshaft Position Timing Over Advanced or System Performance (Bank 1). Not usually, but in rare cases, the underlying causes can damage the engine Low oil, wrong oil viscosity, faulty camshaft actuator, timing chain/belt jumped Stalling, decreased MPG, rattling, engine running rough, check engine light P0011 “A” Camshaft Position Timing Over Advanced or System Performance (Bank 1) P0011 Trouble Code: Quick Info Definition If the oil level is too low, the camshaft actuators won’t work properly. The first thing you should do when you have this code is check your Cruze’s oil. It indicates an issue with your car’s Variable Valve Timing (VVT) system. If the cam is stuck in far advanced or retarded timing, the engine might refuse to start even when applying throttle pressure.P0011 is a common (and serious) OBD II diagnostic trouble code that can occur in the Chevy Cruze. Besides triggering an illuminated check engine light (or MIL), P0011 can also cause hard starting and poor idling. Since the camshaft in bank 1 is constantly stuck in advanced timing, you can only imagine the barrage of symptoms that follow next. This is the reason why frequent oil changes are critical especially in modern cars. Take note that VVT ( read more about Variable Valve Timing) equipped motors rely on oil pressure to activate the variable valve timing mechanism. If the oil is too thick or dirty, the oil passages in the camshaft phasers might get clogged or stuck, hence resulting in a constantly advanced timing in the bank 1 camshaft. This includes wiring problems in the intake control valve solenoid system top incorrect camshaft timing caused by faulty oil control solenoids.īut the main cause of the P0011 code is dirty or sludgy engine oil. The third number narrows it down to the camshaft:Īnything that has to do with camshaft inefficiency is related to the P0011 code. The second number means specific codes for: The first digit in the error code will signify if the code is generic or manufacturer specific: The first letter of the fault code will indicate the family of the diagnostic trouble code. What causes the P0011 Fault Code? P0011 -“A” Camshaft Position – Timing Over-Advanced or System Performance (Bank 1) Remember that the “A” camshaft can either be located in the front, left, or intake side of the motor, depending on the orientation of the engine. Take note that bank 1 is easily located by verifying the position of cylinder 1.Īnd even though the P0011 code is also associated with the ECM or engine control module, this trouble code is specifically attributed to the camshaft timing. This problem is usually associated with V6 or V8 motors equipped with variable-valve timing (VVT), variable-camshaft timing (VCT), or a derivative of both. The source of the P0011 code may sound complicated, but it can be caused by something as trivial as dirty engine oil. The code can also be triggered if the camshaft timing in bank 1 is too advanced even after the ECU commands a lower timing. It’s usually fixed by changing engine oil. The P0011 OBD2 Trouble Code means the ECU has detected the intake camshaft in bank 1 has a more advanced timing. Now that’s quite a mouthful, but the meaning is simple. The technical definition of P0011 OBD2 code is Camshaft Position ‘A’ Timing Over-Advanced or Bank 1 System Performance.
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