What Is the P2068 Code?
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The P2068 code definition is “Fuel Level Sensor B Circuit High.” This means the powertrain control module (PCM) or engine control module (ECM), also called the Engine Control Unit (ECU), has determined that there’s a circuity issue with your fuel level sensor circuit, whichever one is designated “B” in your specific vehicle. This code is a generic OBD-II code, so it can appear in any OBD-II-equipped vehicle if it has fuel level sensors.
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The P2068 code is unique in the way it sets because it doesn’t indicate that there’s been a fuel level issue. Instead, the vehicle simply knows that when you drive for a certain number of miles, the voltage reading for your fuel level gauge should indicate a drop in fuel level. If the PCM indicates that the fuel level has dropped significantly less than expected over a specific period, less than expected even for very good fuel conditions, it will log this code. Additionally, some vehicles, by their design, require the fuel tank to be split, usually for reasons of engineering simplicity. The two sections of the split fuel tank will each have their own fuel level sensor. If there’s an issue with the transfer pump between the two parts of the tank, the B tank may either not fill or be unable to transfer fuel to the A tank. This can result in an imbalance between fuel sensor A and sensor B, which can also result in code P2068.
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What Are the Symptoms of a P2068 Code?
The most common symptom of DTC P2068 is simply that the check engine light or other service engine light will turn on. The check engine light will almost always be your primary indication of this engine code. However, if you regularly allow your fuel levels to dip a bit low before you refuel, you might run out of fuel before the fuel gauge indicates that you should. Your fuel light may not even blink on. If it does, it might sound an alarm. There aren’t usually any issues with the fuel pump relay or the fuel vent valve, but it is possible to see fuel-filling issues.
What Are Some Causes of a P2068 Code?
The primary causes of the P2068 circuit trouble code are an issue with the fuel level sensor or a wiring issue. The most common reason to see the P2068 code is that your fuel level sensor B has gone bad. If it fails, it might not be able to read your fuel level accurately any longer, but all the other parts of the fuel system can keep working properly. You should check the connectors for damage, look at the battery ground terminal, check ground resistance, and ensure there are no wiring issues. In rare cases, this code may indicate a problem with your PCM or ECM, but this is very unlikely.
How Serious Is the P2068 Code?
The P2068 code is not especially serious, but it is important to keep it in mind. This unique code isn’t heavily connected to other parts of your system, so the vehicle can continue running completely fine with this fault code active. However, not knowing the accuracy of fuel level sensors can be scary. Deviation of fuel level makes it far more likely for you to run out of fuel while driving. This is why you should address the code and get a professional fix.
Can I Still Drive with a P2068 Code?
You can almost always still drive with the P2068 code active unless there’s a secondary problem occurring in your vehicle. However, you need to be aware of the code and keep track of how much fuel you’re using so you don’t accidentally run out of fuel on the highway. Although this code is relatively easy to drive with, it does require a lot more work to drive safely over long distances with this code, so fixing it is probably in your best interest.
How Easy Is It to Diagnose a P2068 Code?
Diagnosis of the P2068 code by itself is simple. Most of the time, the problem lies with the fuel level sensor. As long as you know how to investigate a potentially faulty fuel level sensor, you can fix the problem. However, if the fuel level sensor isn’t faulty or you need help handling issues with the fuel level sensor, it can be much more difficult to diagnose. Because the fuel system can be dangerous due to being full of gasoline, it’s a good idea to seek help from an expert if you have any concerns about being able to do this yourself.
How Difficult Is It to Inspect a P2068 Code?
The P2068 code can be surprisingly difficult to inspect because the fuel tank is full of gasoline. To perform a visual inspection, it’s often best to take the fuel tank out of the vehicle entirely, as siphoning gasoline out of the tank can be difficult in many modern vehicles. This can be daunting for many people new to DIY fixes for diagnostic trouble codes. If you’re looking for help, talk to an experienced mechanic to help with your repair steps.
Need Additional Help with Your P2068 Code?
While some people may be able to DIY this fix and get their fuel gauge tank sensor back to the correct position, there are many cases in which you’ll want to get help with code P2068. The good news is that an automobile repair shop will know how to find and fix the problem.
To start, find an auto repair shop in your area. A local auto repair shop is a great starting point for most people, as these experts provide the services you’re looking for while not requiring you to drive very far from home.
Additionally, if you’re experiencing more problems than this one, you’ll see other fault codes on your code scanner. The KBB.com OBD-II database will help you understand what these other codes mean and how to tackle them.
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