What is OBD-II Code P2373 – Fuel Volume Regulator B Control Circuit High
As a mechanic, it is essential to understand the different OBD-II codes that vehicles can generate to help diagnose and repair issues effectively. One of the codes that a vehicle can generate is P2373, which pertains to Fuel Volume Regulator B Control Circuit High. This code indicates that there is an issue with the fuel volume regulator circuit, which can cause a range of problems for the vehicle. This article will cover everything you need to know about OBD-II Code P2373 – Fuel Volume Regulator B Control Circuit High, including what it means, symptoms and causes, diagnostics, and repair solutions.
What is OBD-II Code P2373 – Fuel Volume Regulator B Control Circuit High?
OBD-II codes are used to identify issues with a vehicle’s engine and emissions controls. Code P2373 refers to an issue with the fuel volume regulator B control circuit, which is responsible for controlling the amount of fuel the engine receives based on the driver’s demands. The fuel volume regulator is designed to maintain the fuel pressure and flow within the fuel system, ensuring the engine receives a consistent fuel supply.
When the PCM (Powertrain Control Module) detects that the fuel volume regulator B control circuit is sending a higher voltage signal than it should, it will generate OBD-II Code P2373. This is a generic code, meaning it applies to all makes and models of vehicles and is related to a problem with the fuel volume regulator circuit. The code is associated with a high voltage signal on the fuel volume regulator B control circuit, which can be caused by a range of issues.
What are the Symptoms of OBD-II Code P2373 – Fuel Volume Regulator B Control Circuit High?
The symptoms of OBD-II Code P2373 – Fuel Volume Regulator B Control Circuit High can vary depending on the severity and cause of the issue. Some common symptoms include:
1. Check Engine Light: When the vehicle’s PCM detects an issue with the fuel volume regulator B control circuit, it will trigger the check engine light on the dashboard.
2. Reduced Fuel Efficiency: The fuel volume regulator is responsible for ensuring the engine receives the correct amount of fuel. If there is an issue with the fuel volume regulator B control circuit, it can cause a reduction in fuel efficiency.
3. Engine Misfire: The engine may misfire or hesitate, making it difficult to accelerate smoothly.
4. Stalling: In severe cases, the engine may stall or fail to start altogether, indicating a severe issue with the fuel volume regulator B control circuit.
What are the Causes of OBD-II Code P2373 – Fuel Volume Regulator B Control Circuit High?
There are several potential causes of OBD-II Code P2373 – Fuel Volume Regulator B Control Circuit High. Some of the most common causes include:
1. Faulty Fuel Volume Regulator: The fuel volume regulator may be faulty, causing a high voltage signal on the B control circuit. In this case, replacing the fuel volume regulator should solve the problem.
2. Wiring Issues: Wiring problems such as damage, corrosion, or poor connections can cause a high voltage signal on the B control circuit. In this case, repairing or replacing the wiring should solve the issue.
3. PCM Issues: In rare cases, issues with the PCM may cause a high voltage signal on the B control circuit.
4. Fuel Pump Issues: Issues with the fuel pump, such as low fuel pressure or a weak pump, can cause a high voltage signal on the B control circuit.
How is OBD-II Code P2373 – Fuel Volume Regulator B Control Circuit High Diagnosed?
Diagnosing OBD-II Code P2373 – Fuel Volume Regulator B Control Circuit High can be challenging, as there are several potential causes. A mechanic will typically start by using an OBD-II scanner to read the code and determine the underlying issue. From there, they may perform further diagnostic testing to confirm the cause of the issue. This could include:
1. Visual Inspection: A visual inspection of the wiring and fuel volume regulator can help identify any visible issues such as damage, corrosion, or poor connections.
2. Fuel Volume Regulator Testing: Testing the fuel volume regulator can help determine if it is faulty, which can cause a high voltage signal on the B control circuit.
3. Wiring Testing: Testing the wiring can help identify any issues such as damage, corrosion, or poor connections.
4. Fuel Pump Testing: Testing the fuel pump can help determine if it is functioning correctly and providing adequate fuel pressure and flow to the engine.
What are the Repair Solutions for OBD-II Code P2373 – Fuel Volume Regulator B Control Circuit High?
The repair solutions for OBD-II Code P2373 – Fuel Volume Regulator B Control Circuit High will depend on the underlying cause of the issue. Some common repair solutions include:
1. Replacing the Fuel Volume Regulator: If the fuel volume regulator is faulty, replacing it should solve the issue.
2. Repairing or Replacing Wiring: If the issue is related to wiring problems, repairing or replacing the wiring can solve the problem.
3. Replacing the PCM: In rare cases, issues with the PCM may cause a high voltage signal on the B control circuit. In this case, replacing the PCM should solve the issue.
4. Replacing the Fuel Pump: If the issue is related to the fuel pump, replacing the pump should solve the issue.
Frequently Asked Questions
1. Can I drive with OBD-II Code P2373 – Fuel Volume Regulator B Control Circuit High?
Answer: It is not recommended to drive with OBD-II Code P2373 – Fuel Volume Regulator B Control Circuit High, as it can cause several issues, including reduced fuel efficiency, engine misfire, and stalling.
2. How much does it cost to repair OBD-II Code P2373 – Fuel Volume Regulator B Control Circuit High?
Answer: The cost of repairing OBD-II Code P2373 – Fuel Volume Regulator B Control Circuit High will depend on the underlying cause of the issue. Some common repair solutions include replacing the fuel volume regulator, repairing or replacing wiring, replacing the PCM, or replacing the fuel pump. It is best to get an estimate from a mechanic to determine the exact cost of the repair.
3. How can I prevent OBD-II Code P2373 – Fuel Volume Regulator B Control Circuit High?
Answer: Regular maintenance of the vehicle can help prevent issues such as OBD-II Code P2373 – Fuel Volume Regulator B Control Circuit High. This includes regular oil changes, fuel system cleanings, and replacing worn or damaged parts as needed.
4. Can I repair OBD-II Code P2373 – Fuel Volume Regulator B Control Circuit High myself?
Answer: Repairing OBD-II Code P2373 – Fuel Volume Regulator B Control Circuit High requires a certain level of expertise, and it is recommended to have a professional mechanic diagnose and repair the issue to ensure it is done correctly.
5. How long does it take to repair OBD-II Code P2373 – Fuel Volume Regulator B Control Circuit High?
Answer: The amount of time it takes to repair OBD-II Code P2373 – Fuel Volume Regulator B Control Circuit High will depend on the underlying cause of the issue. Some repairs, such as replacing the fuel volume regulator or repairing wiring, can be completed in a few hours. Other repairs, such as replacing the PCM or fuel pump, may take longer. It is best to get an estimate from a mechanic to determine the amount of time it will take to repair the issue.
20% off Additional Services at Valvoline Instant Oil Change
20% off Cabin Air Filter Replacement at Valvoline Instant Oil Change
