What Codes Will This Page Cover ?
- P1506 Idle Air Control Overspeed Error
P1507 Idle Air Control Underspeed Error
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What Is the P1506 Code?
Symptoms
Causes
Seriousness
Can I Still Drive?
Diagnose
Difficulty of Inspecting
Get Additional Help
The P1506 and P1507 codes are fairly generic codes that indicate an issue with your engine idle. The only specification for these codes is that the idle is out of factory specifications. P1506 indicates that the RPM for the engine is too high, while P1507 indicates that the RPM is too low. Both high and low RPM idle can indicate other problems within the engine, which is why these codes are frequently accompanied by other codes that indicate the actual issue within the engine.
More About the P1506 and P1507 codes
The most important thing to remember about the P1506 and P1507 codes is that these are manufacturer-specific trouble codes. This means that they don’t actually apply to all manufacturers. You’re most likely to find these codes on Ford vehicles, although some other common American manufacturers do also use it, like Lincoln, Mazda, and Oldsmobile. The best way to make sure these codes mean what you think they mean is to check the handbook for your vehicle.
What Are the Symptoms of a P1506 Code?
The check engine light is one of the most obvious tells of these codes. In some cases, you might notice that the idle of the engine is noticeably “off,” whether because it seems like it’s revving too much, because it seems sluggish to respond, or because it backfires or generally doesn’t function especially well when you’re at rest. However, all of these symptoms may be absent; the only consistent commonality is the check engine light.
What Are Some Causes of a P1506 Code?
The most common cause of these codes is an issue with the Idle Air Control (IAC) valve. It may be a general problem with the valve, an issue with an open, shorted, or poorly connected valve harness, leaks in the intake, or even a stuck valve somewhere along the lines. Most of the time, the cause has to do with the IAC process and is a physical issue.
How Serious Is the P1506 Code?
The P1506 and P1507 codes are codes that you should address as soon as possible, as a consistent issue with idling RPM can lead to other problems within your engine. Even if it doesn’t feel like the code is especially impactful when it comes to your driving, early detection can help you avoid serious issues that might otherwise develop in the months of driving on the P1506 and P1507 codes without knowing.
Can I Still Drive with a P1506 Code?
The P1506 and P1507 codes are codes that you should address as soon as possible, as a consistent issue with idling RPM can lead to other problems within your engine. Even if it doesn’t feel like the code is especially impactful when it comes to your driving, early detection can help you avoid serious issues that might otherwise develop in the months of driving on the P1506 and P1507 codes without knowing.
How Easy Is It to Diagnose a P1506 Code?
Diagnosis of the P1506 and P1507 codes can be of moderate difficulty, especially if your issue is less obvious. The easiest diagnosis will occur if you can visually see issues with the valve, valve harness, or valve circuit. However, intake leaks, for example, are often very small and might be nearly impossible to see by yourself. Some pieces of the diagnostic process will be easier than others, so if you’re not an accomplished DIYer, you might want to hand this process over to an expert.
How Difficult Is It to Inspect a P1506 Code?
The inspection process generally isn’t especially difficult; most of the time, you only need to look at the IAC valve. However, the problem can lie in knowing what a well-functioning IAC valve and circuit look like as opposed to a faulty one. Because an expert has been doing this for so long, they’ll know these things in a way that you might not, which is why the inspection process can be tricky for beginners.
Need Additional Help with Your P1506 Code?
Whether you’re an absolute beginner or you have some experience with DIY, there are many reasons you might choose to get expert help with the P1506 and P1507 codes. If you’ve decided that the P1506 and P1507 codes are codes you don’t want to tackle on your own, then it’s important to find a great local expert.
First, find a repair shop in your area with the KBB locator. This helps you find the closest repair shop that can help you with your vehicle’s specific make and model, which can be an important part of fixing the problem quickly.
Additionally, your vehicle will likely show other codes with this one. If your vehicle is throwing other codes or you just want to learn a little more, you can check out the OBD-II database. This database shows off more codes and information about how you can use these codes, giving you more insight into the process.
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