I had my engine light checked and it said camshaft timing advanced, do ok need to have the whole assembly replaced?

I'm not noticing anything while I drive I just had a light on and had it checked.

My car has 115000 miles.
My car has an automatic transmission.

Experienced mechanics share their insights in answering this question :
There are two possible causes for this issue. One could be a faulty camshaft position sensor. The engine control unit relies on sensors at both the camshafts and crankshaft to determine where each cylinder is in the engine’s rotation. This helps trigger spark and fuel injection at the proper time. If the camshaft position sensor is not sending the correct information to the ecu, a fault code will be set. Another possibility is an oil concern. your engine is equipped with variable valve timing. In simple terms, oil pressure fed solenoids can vary the profile of the camshafts. This allows the engine to make good power at all rpm’s. A fixed camshaft makes better power st certain rpm’s and less power at others. These solenoids can become gummed or sludged up over time, especially if the oil is not changed at regular intervals. The passages in the solenoids become restricted, reducing oil pressure inside them to vary the camshaft timing. You can try an engine flush followed with a fresh oil change to see if that remedies the problem. If not, then a certified technician can inspect the vehicle to determine if the camshaft position sensor is at fault, or if a replacement variable-valve timing solenoid replacement is the solution.

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Unfortunately, there`s no way to reset a camshaft position sensor. If you`re having camshaft issues (check engine light on, acceleration trouble, sputtering and stalling, etc.), you`ll have to replace the part entirely.
While the new sensor is now installed, and you may get lucky and have it function perfectly right from the start, it`s highly recommended to “relearn” the sensor at this point in order to calibrate the entire system properly.
These are the most likely causes: The camshaft timing is off. The valve control solenoid is stuck open. The valve control solenoid system has faulty or damaged wiring.
In most cases, a faulty camshaft position sensor will cause a vehicle`s check engine light to illuminate. This occurs when one or more timing-related diagnostic trouble codes are logged by a vehicle`s PCM.
Camshafts can be rebuilt if they have lobe wear, as long as that wear is not excessive. Above you can see examples of both a rebuildable and non-rebuildable camshaft. The rebuildable camshaft has slight wear. You can see that the wear is not deep and just looks like the cam has been scratched.
Camshaft and crankshaft position sensor replacement is often necessary on many cars due to the common results of heat and vibration. However, if the proper relearn process is not performed to account for mechanical wear and manufacturing tolerances when replaced, you may face unnecessary comebacks and complaints.
The camshaft position sensor is a magnetic sensor that monitors camshaft speed to regulate ignition timing and fuel injection timing. It gathers and sends information about the car`s camshaft speed (and as a result the position of each piston) to the car`s electronic control module.
Reasons for failure of the camshaft sensor can be: Mechanical damage. Break in the encoder wheel. Internal short circuits.
Evidently, you cannot reset a camshaft position sensor. Therefore, you will need to replace the component if your camshaft malfunctions (check engine light on, acceleration issues, sputtering and stalling, etc.).
NOT PERFORMING A RELEARN PROCESS

In rare cases the engine may misfire or go into “reduced power” or “limp mode” especially under high RPM/load situations Additionally, omission of the relearn process could cause the vehicle to be unable to pass an emissions test due to incomplete or failed misfire monitor.

The most common failure is the crankshaft position sensor. These fail much more frequently than the cam sensor and will cause a no start. It can also occur if the timing belt broke or jumped a tooth. I would do a compression test also to see if there is low compression.

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I had my engine light checked and it said camshaft timing advanced, do ok need to have the whole assembly replaced?
ANSWER : There are two possible causes for this issue. One could be a faulty camshaft position sensor. The engine control unit relies on sensors at both the camshafts and crankshaft to determine where each cylinder is in the engine’s rotation. This helps trigger spark and fuel injection at the proper time. If the camshaft position sensor is not sending the correct information to the ecu, a fault code will be set. Another possibility is an oil concern. your engine is equipped with variable valve timing. In simple terms, oil pressure fed solenoids can vary the profile of the camshafts. This allows the engine to make good power at all rpm’s. A fixed camshaft makes better power st certain rpm’s and less power at others. These solenoids can become gummed or sludged up over time, especially if the oil is not changed at regular intervals. The passages in the solenoids become restricted, reducing oil pressure inside them to vary the camshaft timing. You can try an engine flush followed with a fresh oil change to see if that remedies the problem. If not, then a certified technician can inspect the vehicle to determine if the camshaft position sensor is at fault, or if a replacement variable-valve timing solenoid replacement is the solution.

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This may happen for a couple of reasons. First, check to be sure that the connections to the sensor are clean and not faulty or broken. Secondly, check to be sure you replaced the correct sensor as there are two camshaft position sensors in some applications. If you need further help with this, please reach out to us here at YourMechanic as we are always here to help.

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