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The definition of code P0023 can vary depending on your make and model; it often shows up as “B Camshaft Position Actuator A Control Circuit/Open Bank 2” or “Exhaust ‘B’ Camshaft Position Actuator Circuit (Bank 2).” This means the powertrain control module (PCM) or engine control module (ECM) has identified a problem with the camshaft “B” position actuator circuit in bank 2.
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More About the P0023 Code
Your vehicle’s variable valve timing (VVT) and variable camshaft timing (VCT) components allow your engine to create even more power while also remaining efficient. This is a complex section of your engine and may include components like your oil control valve (OCV), also called a solenoid valve, the actual camshaft position actuator (CMP actuator), a high control circuit, and a low reference circuit. The “B” camshaft usually refers to the rear camshaft, also called the exhaust camshaft or right camshaft, while bank 2 is whichever side of the engine does not contain cylinder 1; however, you should always check manufacturer’s specifications to isolate the specific camshaft indicated.
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The first thing you’ll likely see with the P0023 diagnostic trouble code is that your check engine light will turn on. Outside of this, there are actually many common symptoms associated with the P0023 code, but they can occur irregularly, and they often have to do with related codes showing up in your vehicle. Generally, you can expect to see rough running issues, as well as overall reduced engine power and increased fuel consumption.
There are many elements of the VVT and VCT components, and issues within many of these components can result in the P0023 code. For example, you may see failed VVT actuator wiring, including shorted wiring and open wiring. Problems with the VVT oil flow control valve solenoid, including open and shorted circuits, can also result in the code. Overall, VVT circuit issues, such as damaged wires, corroded wires, and poor connections, can result in this code. Finally, sometimes this code comes from a faulty PCM or general issues with software updates, although this is pretty rare.
The P0023 code should be considered somewhat serious. While it may not cause severe drivability problems, any issues within the VT and VCT system can eventually develop into more serious engine-related concerns, which is why it’s best to fix the issue as soon as possible. If you’re seeing this problem, especially if there are any common symptoms, such as rough running and reduced engine power, talk to an expert to see how you can fix the issue.
You should physically be able to drive when DTC P0023 is active in your vehicle. However, that doesn’t necessarily mean it’s a good idea to do so. Continuing to drive with the P0023 code active can lead to worsening problems within the vehicle, as the engine can be unable to make small changes that allow for more efficient function. Plus, this code often results in lowered fuel efficiency, so you may actually save money by fixing the problem as early as possible.
Diagnosis for error code P0023 can be fairly difficult because of how many components are part of the VVT and VCT systems. You’ll need a factory service manual and other tools because you can’t get step-by-step instructions that will work for every vehicle. If you’re not well-versed in the process of auto repair, it’s likely that you won’t be able to accurately determine what the core problem is and how to fix it. Most DIYers will probably want to get assistance from a professional mechanic while diagnosing this code to ensure a complete repair.
The inspection process for the P0023 code is also typically difficult. A diagnostic flowchart can help you inspect the right components in a row, but if you’re not familiar with the WVT and VCT systems, you may not know how to check each component to ensure its proper functioning. An advanced DIYer may be able to use repair manuals and factory repair information to troubleshoot the problem, but most DIYers should stick to expert help.
Additional help with the P0023 code can be extremely helpful for many DIYers. An expert can help you get a permanent fix for this problem rather than just a temporary one.
Your first step should be to find an auto repair shop in your area. Finding a local auto repair shop may make you more likely to fix the problem, as you won’t have to go very far out of your way to find a solution.
You can also check out the OBD-Il database at KBB.com for more insight. With this database, you’ll be able to learn more about any other code that shows up on your scan tool. That way, you’ll be more prepared to talk to an auto repair shop about your issues.
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