Technical Description of OBD-II Trouble Code
Bank 2 is experiencing a performance issue or is stuck off in the B camshaft profile control circuit.
What does that mean?
This is a generic diagnostic trouble code (DTC) that applies to OBD-II vehicles, including Volvo, Chevrolet, Ford, Dodge, Porsche, Ford, Land Rover, Audi, Hyundai, Fiat, and others. 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 has lobes integrated into its design, which are measured 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 a belt or chain.
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 performance at different engine speeds and loads. These adjustable lobes are designed to increase volumetric efficiency and provide other benefits based on the demands of the operator. It’s important to note that these “new lobes” are often achieved through various strategies, such as switchable or adjustable rocker arm components, rather than physical lobes.
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’s important to identify which camshaft is being referred to before proceeding. In terms of banks, bank 1 refers to the side with cylinder #1. The designation of “B” typically corresponds to the exhaust camshaft, while “A” corresponds to the intake camshaft. However, this can vary depending on the specific engine design, so it’s essential to consult the manufacturer’s service manual for precise information.
The Engine Control Module (ECM) triggers the Check Engine Light (CEL) and sets the P005C code when it detects a malfunction in the camshaft profile control circuit. The code indicates a performance problem or stuck off condition in the bank 2 circuit.
What is the severity of this DTC?
The severity is classified as medium. However, the severity can vary significantly depending on the specific symptoms and faults experienced. Generally, it is recommended to address any hydraulic issues or problems with internal engine systems as soon as possible. Neglecting these issues can lead to further complications, so it’s advisable to have the problem diagnosed and repaired by a professional if necessary.
What are some of the symptoms of the code?
Symptoms of a P005C trouble code may include:
What are some of the common causes of the code?
Possible causes for the P005C code include:
What are some P005C troubleshooting steps?
Basic Step #1
First, verify the quality of the engine oil being used. Check the oil level and inspect the cleanliness of the oil. If the oil is black or dark in color, it should be replaced along with the oil filter. It’s important to adhere to the recommended oil maintenance schedule to prevent contamination and sludge buildup, which can cause malfunctions in the engine’s hydraulic and other systems. Refer to the service manual for the appropriate maintenance schedule and compare it with your service records.
NOTE: Always use the oil viscosity recommended by the manufacturer. Using oil that is too thick or too thin can lead to future problems, so ensure the correct viscosity before purchasing any oil.
Basic Step #2
Locate the wiring harness, wires, and connectors associated with the camshaft profile control circuit. Consult a wiring diagram to assist in identifying the wires. Wiring diagrams can be found in the vehicle’s specific service manual. Inspect all wires and harnesses for signs of damage or wear. Additionally, check the connections at the connectors, as they can become loose due to broken tabs, especially considering the consistent engine vibrations experienced in this area.
NOTE: It’s 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.
