Technical Description of OBD-II Trouble Code
A Low Camshaft Profile Control Circuit in Bank 2
What does that signify?
This is a generic diagnostic trouble code (DTC) that applies to OBD-II vehicles. It can affect various vehicle brands such as Volvo, Chevrolet, Ford, Dodge, Porsche, Ford, Land Rover, Audi, Hyundai, Fiat, etc. Although it is a generic code, the specific repair steps may vary depending on the year, make, model, and powertrain configuration of the vehicle.
The camshaft is responsible for controlling the positions of the valves. It consists of a shaft with lobes that are designed to open and close the valves at the optimal speed and amount when properly timed. The crankshaft and camshaft are mechanically connected using different methods such as belts or chains.
In the code description, the term “camshaft profile” refers to the shape or roundness of the camshaft lobes. Some systems use adjustable lobes to optimize the lobe design for different engine speeds and loads, which can improve volumetric efficiency and other performance aspects based on the driver’s demands. It is important to note that these “new lobes” are often achieved through various strategies, such as switchable or adjustable rocker arm components, rather than physically adding another lobe.
The letter “2” in the description is significant because it indicates that the issue could be related to either camshaft and there may be two shafts on each cylinder head. Therefore, it is crucial to identify which camshaft is being referred to before proceeding. Additionally, “bank 1” typically refers to the camshaft associated with cylinder #1, and “A” usually represents the intake camshaft while “B” refers to the exhaust camshaft. However, these designations can vary depending on the specific engine design, so it is advisable to consult the manufacturer’s service manual for precise information.
The Engine Control Module (ECM) triggers the Check Engine Light (CEL) and sets the P001E code and related codes when it detects a malfunction in the camshaft profile control circuit. The P001E code specifically indicates a low electrical condition in the bank 2 circuit.
What is the severity of this DTC?
The severity is classified as medium. However, it is important to note that the severity can vary significantly depending on the specific symptoms and faults experienced by the vehicle. Generally, it is recommended to address any hydraulic issues or problems related to internal engine systems as soon as possible. Neglecting these issues can lead to further complications, so it is advisable to have the problem diagnosed and repaired by a professional if necessary.
What are some of the symptoms of the code?
The symptoms of a P001E trouble code may include:
What are some of the common causes of the code?
The causes of the P001E code may include:
What are some P001E troubleshooting steps?
Basic Step #1
The first step is to verify the quality of the engine oil being used. Check the oil level and inspect the cleanliness of the oil. If the oil appears black or dark, it is recommended to replace the oil and filter. It is also important to adhere to the recommended oil maintenance schedule provided in the service manual to prevent oil contamination and sludge buildup, which can affect the performance of the engine’s hydraulic systems, including the camshaft profile control system.
NOTE: Always use the oil viscosity recommended by the manufacturer. Using oil that is either too thick or too thin can cause future problems, so ensure the correct oil is used.
Basic Step #2
Locate the wiring harness, wires, and connectors associated with the camshaft profile control circuit. Refer to a wiring diagram in the vehicle’s specific service manual to assist in identifying the wires. Inspect all wires and harnesses for any signs of damage or wear. Additionally, check the connections at the connectors, as they can become loose due to engine vibrations.
NOTE: It is recommended to use electrical contact cleaner on the pins and connections to facilitate easy connection and disconnection of the connectors during the troubleshooting process and for future maintenance.
