P0024 B camshaft position - timing over advanced or system performance (Bank 2)

This code indicates that there is a problem with the exhaust camshaft timing on bank 2 of your engine. Bank 2 refers to the side of the engine that does not contain cylinder 1.

If you have a check engine light on your dashboard and you scan it with an OBD2 scanner, you may see the code P0024. The camshaft is a rotating shaft that controls the opening and closing of the valves in the engine. The timing of the camshaft determines when the air and fuel mixture enters the combustion chamber and when the exhaust gases are released.

The code P0024 means that the exhaust camshaft on bank 2 is more advanced than the engine control module (ECM) has commanded it to be. This means that the camshaft is opening and closing the valves too early, which can affect the engine performance, fuel economy, and emissions. The code P0024 is also known as:

• - Exhaust "B" Camshaft Position - Timing Over-Advanced (Bank 2)
• - Exhaust Camshaft Timing - Over-Advanced Bank 2
• - Camshaft Position B - Timing Over-Advanced or System Performance (Bank 2)

The code P0024 is related to other codes that involve the camshaft position and timing, such as P0014, P0021, P0025, and P0340.

What are the Symptoms of P0024 Code?

The symptoms of the code P0024 may vary depending on the severity of the problem, the type of vehicle, and the condition of the engine. Some of the common symptoms are:

• - Check engine light on: The check engine light is a warning indicator that alerts you when there is a problem with your engine or its components. The ECM turns on the check engine light when it detects a fault in the camshaft circuit and stores the code P0024 in its memory.
• - Hard starting or stalling: Hard starting or stalling means that your engine has difficulty starting or staying running. This can happen when the camshaft timing is over-advanced, which can affect the compression, combustion, and ignition of the air and fuel mixture in the cylinders. This can also cause a loss of power and performance.
• - Rough running or idling: Rough running or idling means that your engine runs unevenly or vibrates excessively. This can happen when the camshaft timing is over-advanced, which can cause the valves to open and close at the wrong time and disrupt the airflow in and out of the cylinders. This can also cause a misfire, a backfire, or a knock in the engine.
• - Reduced power or acceleration: Reduced power or acceleration means that your engine cannot deliver the expected speed or force. This can happen when the camshaft timing is over-advanced, which can affect the efficiency and effectiveness of the engine. This can also cause a hesitation, a surge, or a lag in the engine response.
• - Decreased fuel efficiency: Decreased fuel efficiency means that your engine consumes more fuel than normal. This can happen when the camshaft timing is over-advanced, which can affect the optimal ratio and timing of the air and fuel mixture in the cylinders. This can also cause an increase in emissions and pollution.
• - Rattling or knocking noise from the engine: Rattling or knocking noise from the engine means that you hear a loud or unusual sound from your engine. This can happen when the camshaft timing is over-advanced, which can cause a premature or improper contact between the valves and pistons in the cylinders. This can also cause damage to the engine components.
• - Failed emissions test: Failed emissions test means that your vehicle does not meet the standards for emissions and pollution set by your state or country. This can happen when the camshaft timing is over-advanced, which can affect the amount and quality of the exhaust gases produced by your engine. This can also cause an increase in harmful substances such as carbon monoxide, hydrocarbons, and nitrogen oxides in your exhaust.

What are the Causes of P0024 Code?

The code P0024 can be caused by various factors that affect the camshaft timing and position. Some of the possible causes are:

• Dirty or low engine oil: The engine oil lubricates and cools the camshaft and its components. If the oil is dirty or low, it can cause friction, heat, and sludge buildup, which can affect the camshaft timing and performance.
• Incorrect oil viscosity or quality: The oil viscosity or thickness affects the flow and pressure of the oil in the engine. If the oil is too thick or thin, or if it is of poor quality, it can cause the OCV or VVT solenoid to malfunction or stick, which can alter the camshaft timing and position.
• Faulty or clogged OCV or VVT solenoid: The OCV or VVT solenoid is an electromechanical device that controls the oil flow to the camshaft phaser or VVT actuator. It receives signals from the ECM to adjust the camshaft timing according to the engine speed, load, and temperature. If the OCV or VVT solenoid is faulty or clogged, it can fail to respond to the ECM commands or send incorrect signals, which can cause the camshaft to be over-advanced or under-advanced.
• Faulty or stuck camshaft phaser or VVT actuator: The camshaft phaser or VVT actuator is a mechanical device that rotates the camshaft relative to its initial position. It uses oil pressure from the OCV or VVT solenoid to change the camshaft angle and timing. If the camshaft phaser or VVT actuator is faulty or stuck, it can fail to rotate the camshaft properly or lock it in an incorrect position, which can cause the code P0024.
• Faulty or misaligned CMP sensor: The CMP sensor is an electronic device that monitors the position and speed of the camshaft. It sends signals to the ECM to synchronize the fuel injection and ignition timing with the camshaft movement. If the CMP sensor is faulty or misaligned, it can send inaccurate or erratic signals to the ECM, which can cause the code P0024.
• Faulty or damaged wiring or connectors in the camshaft circuit: The wiring and connectors in the camshaft circuit connect the OCV or VVT solenoid, the camshaft phaser or VVT actuator, and the CMP sensor to the ECM. If any of these wires or connectors are faulty or damaged, they can cause a short circuit, an open circuit, a voltage drop, or a poor connection, which can interfere with the communication and operation of these components and cause the code P0024.
• Worn or stretched timing chain or belt: The timing chain or belt connects the camshaft and crankshaft and ensures that they rotate in sync. If the timing chain or belt is worn or stretched, it can cause a slack or a jump in the timing, which can affect the camshaft position and timing and cause the code P0024.
• Mechanical damage to the camshaft or valves: The camshaft and valves are vital parts of the engine that control the airflow in and out of the cylinders. If any of these parts are damaged due to wear, corrosion, impact, overheating, or improper installation, they can affect the camshaft movement and performance and cause the code P0024.

These symptoms may vary depending on how severe and how long-lasting

How to Diagnose and Fix P0024 Code?

To diagnose and fix the code P0024, you will need a scan tool, an OBD2 code reader, a multimeter, and a repair manual for your specific vehicle model. You will also need to follow these steps:

1. Verify the code. Use a scan tool or an OBD2 code reader to confirm that the code P0024 is present. You may also see other codes related to the camshaft position and timing. Note down all the codes and clear them from the memory. Then, start the engine and see if the code returns. If it does, proceed to the next step.
2. Check the engine oil. Inspect the oil level, condition, and viscosity. Make sure that you are using the correct type and quality of oil for your vehicle. If the oil is dirty, low, or too thick or thin, change it and replace the oil filter. Then, clear the codes and test drive the vehicle to see if the code comes back. If it does, go to the next step.
3. Check the oil control valve (OCV) or variable valve timing control solenoid (VVT solenoid). Locate the OCV or VVT solenoid on bank 2 of your engine. It is usually mounted on top of or near the camshaft phaser or VVT actuator. Disconnect its electrical connector and inspect it for any signs of damage, corrosion, or loose wires. Then, use a multimeter to test its resistance. Refer to your repair manual for the correct specifications and procedure. If the resistance is out of range, replace the OCV or VVT solenoid. If not, go to the next step.
4. Check the camshaft phaser or variable valve timing actuator (VVT actuator). Remove the OCV or VVT solenoid from its mounting and inspect its screen for any debris or clogging. Then, apply battery voltage and ground to its terminals and observe its movement. It should move smoothly from one end to another. If it does not move at all, moves erratically, or makes a loud noise, replace it. If not, go to the next step.
5. Check the camshaft position sensor (CMP sensor). Locate the CMP sensor on bank 2 of your engine. It is usually attached to the front or rear of the cylinder head. Disconnect its electrical connector and inspect it for any damage, corrosion, or loose wires. Then, use a multimeter to test its resistance and voltage. Refer to your repair manual for the correct specifications and procedure. If the resistance or voltage is out of range, replace the CMP sensor. If not, go to the next step.
6. Check the wiring and connectors in the camshaft circuit. Inspect the wiring and connectors that connect the OCV or VVT solenoid, the camshaft phaser or VVT actuator, and the CMP sensor to the ECM. Look for any signs of damage, corrosion, shorting, or open circuits. Repair or replace any faulty wiring or connectors as needed. Then, clear the codes and test drive the vehicle to see if the code comes back. If it does, go to the next step.
7. Check the timing chain or belt. Remove the timing cover and inspect the timing chain or belt for any signs of wear, stretching, or damage. Also, check the alignment of the timing marks on the camshaft and crankshaft sprockets. Refer to your repair manual for the correct procedure and specifications. If the timing chain or belt is worn, stretched, or misaligned, replace it and adjust the timing as needed. Then, clear the codes and test drive the vehicle to see if the code comes back.

If none of these steps fix the code P0024, you may have a more serious problem with your engine, such as a bent or broken valve, a damaged camshaft, or a faulty ECM. In that case, you will need to consult a professional mechanic for further diagnosis and repair.

Conclusion

The code P0024 is a serious problem that can affect your engine performance, fuel economy, and emissions. It can also cause engine damage if left untreated. Therefore, it is important to diagnose and fix this code as soon as possible. By following the steps above, you can troubleshoot and repair this code yourself using some basic tools and skills. However, if you are not confident or comfortable with working on your engine, you should seek professional help from a qualified mechanic. 

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