What Is the P2308 Code?
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The P2308 code definition is “Ignition Coil C Secondary Circuit.” This is part of a set of engine codes related to ignition coil problems, ranging from Coil A to Coil L. These codes indicate that the powertrain control module (PCM) or engine control module (ECM) has noticed a problem with the ignition coil. In the case of the P2308 code, this is the secondary circuit for whichever coil is designated “C” in your engine. This code can appear in any OBD-II vehicle with an engine type that uses fuel to power the vehicle.
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More About Error Code P2308
Ignition coils in your vehicle ignite the air/fuel mixture inside your internal combustion engine. These coils must work on an extremely strict timing to ensure that the combustion process works properly to fuel your vehicle and move it forward, rather than resulting in engine misfires and stalling. This specific code indicates a problem with the transistors, called “drivers” in this case, that turn your ignition coil on and off. The “secondary circuit” in this diagnostic trouble code indicates the wiring processes that are not supplying battery voltage to the coil, such as the high-energy ignition boot, spark plug boot, and spark plug wires.
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What Are the Symptoms of a P2308 Code?
The common symptoms of the P2308 code usually have to do with the kinds of problems that you may experience when your air/fuel mixture isn’t combusting properly. This may include engine misfire, generally diminished engine performance, and reduced fuel efficiency, causing a drop in fuel economy. The PCM may also choose to disable fuel injector operation for this specific cylinder, which can contribute to engine performance problems. This code also frequently turns up with additional related codes. You should expect to see the check engine light turn on as well.
What Are Some Causes of a P2308 Code?
The P2308 code can happen for a variety of reasons. This is partially because of the many components of the ignition coil system. Here are a few problems to look out for:
- Bad spark plug wire or spark plug boot
- Malfunctioning relay or blown fuse
- Open or shorted wiring or wiring connectors
- Faulty camshaft or crankshaft sensor or wiring
- Defective ignition coil
- PCM failure
Of course, some of these causes are more common than others. PCM failure, for example, is exceptionally rare. However, these could all result in diagnostic trouble code (DTC) P2308.
How Serious Is the P2308 Code?
As with any code that has to do with fuel ignition, consider the P2308 code as being pretty serious. This code can result in engine misfiring and diminished engine performance, which can take a toll on your vehicle in the long term. Even if you’re not seeing any drivability problems right now, your vehicle is built to use all of your ignition cylinders, and driving unbalanced like this can result in issues over time.
Can I Still Drive with a P2308 Code?
You will likely be able to drive physically when the P2308 code is active, as this code doesn’t usually result in a no-start condition or even Limp Mode. However, this doesn’t just mean it’s completely fine to keep driving when the P2308 code is active. Driving the vehicle with this code active can result in severe engine damage, and it’s also probably using more fuel than necessary, meaning that you’re costing yourself money by continuing to drive. When you know you’re dealing with this code, stop driving and get an expert mechanic to help.
How Easy Is It to Diagnose a P2308 Code?
There are many possible causes of code P2308 throughout many different vehicle systems. This makes the P2308 code extremely difficult to diagnose. If you don’t have plenty of knowledge and extra diagnostic trouble codes to help, an accurate diagnosis can be extremely difficult and require special equipment, lots of time, and a keen eye. Even trying to figure out the problem associated with the P2308 code is very difficult in many cases, so finding an experienced mechanic at an auto repair shop might be your best option.
How Difficult Is It to Inspect a P2308 Code?
Inspection, as with diagnosis, is often very difficult. You’ll need a diagnostic scanner, a digital volt/ohmmeter (DVOM), and reliable vehicle information, including technical service bulletins, repair guides, freeze frame data, and wiring diagrams to determine where the problem is. This can be hard for many DIYers, as they don’t often have easy access to this information and may make common mistakes. Instead, talking to a certified mechanic can make the process much easier and help you settle on a fix that doesn’t require a follow-up repair.
Need Additional Help with Your P2308 Code?
Many people need additional help with the P2308 code, so you’ll need to seek an expert to give you insight into your issues.
You’ll need to find an auto repair shop in your area. A local automobile repair shop is one of the best choices here because it’s convenient and will make it easy for you to fix the problem.
You may also see additional codes in your code scanner, which you must tackle. To understand more about these codes, you can use the OBD-II database, which is available at KBB.com.
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