P1626 code — how to fix error fast
Delve into the P1626 code and discover its significance for vehicle longevity.
Getting an OBD2 code after a diagnostic scan could mean bad news for your car, especially if it’s a code like P1626 that has to do with the vital systems of the vehicle. However, most drivers choose to keep driving even with the code on, and that inevitably leads to breakdowns of key components of the vehicle.
If you face this exact code, you’ll need to know more about the P1626 code meaning, the ways in which it influences your car, and how to remove it. So, our team prepared a complete guide on the most probable causes behind the code, diagnostic methods you can apply, and possible solutions.
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What does the P1626 code mean?
P1626 is an OBD2 diagnostic trouble code that indicates an issue with the theft deterrent system. It is a manufacturer-specific code, which means that the meaning of the code may vary depending on the make and model of the vehicle.
In general, P1626 means that the anti-theft system has detected a problem with the vehicle’s key or ignition. When this code is set, the vehicle’s engine may not start, or it may start and then immediately stall. In some cases, the vehicle may enter a “no-start” mode and refuse to start at all.
What causes the P1626 code?
This code can be caused by a variety of issues, such as a faulty key, a damaged ignition cylinder, or a malfunctioning immobilizer module. To prevent having to deal with issues that could lead to trouble starting your car, here’s a list of the most likely potential causes of the code you should be aware of:
Faulty key or key fob
A faulty key or key fob can cause the P1626 code. In this case, the key or key fob may not be communicating correctly with the car’s computer, causing the theft deterrent system to malfunction. Symptoms of a faulty key or key fob include the car not starting, the key not turning in the ignition, and the car’s security light flashing.
Malfunctioning anti-theft module
Another potential cause of the P1626 code is a malfunctioning anti-theft module. The anti-theft module is responsible for communicating with the car’s computer and allowing the car to start. If the anti-theft module is malfunctioning, it can cause the P1626 code. Symptoms of a malfunctioning anti-theft module include the car not starting and the security light flashing.
Wiring issues
Wiring issues can also cause the P1626 code. If there is a problem with the wiring in the anti-theft system, it can cause the theft deterrent system to malfunction. Symptoms of wiring issues include the car not starting and the security light flashing.
Which car models does the P1626 code affect the most?
Since the P1626 code is a manufacturer-specific code, the likelihood of it appearing on a given car model depends on the make and model of the vehicle. However, in general, vehicles from General Motors (GM) are more likely to be affected by this code than vehicles from other manufacturers. Here are some of the main ones:
- Chevrolet Cavalier: The Passlock anti-theft system used in many GM vehicles like the Cavalier can be responsible for triggering the code P1626 in a car.
- Chevrolet Impala: Another model that’s affected by the faulty Passlock system is the Impala. This system is designed to prevent unauthorized use of the vehicle by disabling the fuel system if it detects a problem with the ignition or key, so it can trigger the P1626 code.
- Chevrolet Malibu: The Malibu is the final car on our list with the highest recorded amount of driver complaints about the code 1626 being displayed for similar reasons as the previous models.
How to diagnose the P1626 code
Diagnosing the P1626 code requires a few steps. Usually, a mechanic would use a diagnostic tool to read the code and determine the cause of the malfunction. The diagnostic tool provides information about the specific area in the anti-theft system that is malfunctioning, but there are other ways of diagnosing the code as well:
Checking the key
In many cases, P1626 is caused by a problem with the vehicle’s key. Mechanics may check the key for damage or wear, and may also try using a different key to see if this resolves the issue.
Inspecting the ignition cylinder
If the key appears to be in good condition, you can move on by inspecting the ignition cylinder for damage or wear. The ignition cylinder can also be affected by the way you turn the key in the ignition switch, so if you put more power into it in case the steering wheel locked and you wanted to unlock it, this could have affected the ignition cylinder.
Testing the immobilizer module
The immobilizer module is responsible for verifying that the correct key is being used to start the vehicle. If this module is malfunctioning, it can trigger P1626. You may test the module using specialized diagnostic equipment to determine if it is functioning properly or refer to a trusted mechanic for tools and assistance.
How to fix the P1626 code
The solution of code P1626 can depend on a variety of reasons, and it’s crucial that you’ve properly determined the issue behind it. If you have, you can use one of the following methods to fix the problem depending on the exact cause of the issue:
Faulty key or key fob
If the cause of the P1626 code is a faulty key or key fob, the solution may be as simple as replacing the key or key fob. The cost of replacing a key or key fob can range from $50 to $200 and you can use a replacement key fob if you have one to keep driving your car regularly while the key is being reprogrammed.
Malfunctioning anti-theft module
If the cause of the P1626 code is a malfunctioning anti-theft module, the module will need to be replaced. The cost of replacing an anti-theft module can range from $200 to $500.
Wiring issues
If the cause of the P1626 code is wiring issues, the wiring will need to be repaired or replaced. The cost of repairing or replacing wiring will depend on the extent of the damage.
If you are not confident in your ability to fix the P1626 code, it is important to seek professional help. A professional mechanic can diagnose the issue and provide a solution to fix the code.
How to prevent the P1626 code
Preventing the P1626 code requires routine maintenance and proper care of the anti-theft system. Some preventative measures include:
- Regular maintenance of the anti-theft system
- Checking the wiring and anti-theft module
- Checking your key fob for proper signals
- Storing the key fob away from magnets and other electronics
As you can see, proper care of the anti-theft system is also essential to prevent the P1626 code. This includes keeping the key or key fob in good condition, storing the key or key fob away from magnets or other electronics, and ensuring the anti-theft system is not modified.
Our take
In conclusion, understanding the P1626 code is crucial for any car mechanic. By knowing the potential causes of the code, the steps to diagnose the code, the solutions to fix the code, and preventative measures to avoid the code in the future, you can ensure that your car drives easily without any problems.
Can I still drive my car with the P1626 code?
In some cases, the vehicle may start and run with the P1626 code present. However, it’s important to address the underlying issue as soon as possible, as a malfunctioning anti-theft system can make your vehicle more vulnerable to theft.
How do I fix the P1626 code?
The best way to fix P1626 is to take your vehicle to a qualified mechanic for diagnosis and repair. They will use specialized diagnostic equipment to identify the underlying cause of the code and perform any necessary repairs or replacements.
How much will it cost to fix P1626?
The cost of fixing P1626 can vary widely depending on the make and model of your vehicle, as well as the underlying cause of the issue. Repair costs can range from a few hundred dollars to several thousand dollars.
