Question
What does code P0513 mean?
P0513 code stands for “Incorrect Immobilizer Key,” meaning that the powertrain control module (PCM) can’t identify the immobilizer key inserted in the cylinder.
The immobilizer system works with the help of the radio frequency identification (RFID). The smart key, or transponder, has a microchip, enabling it to connect with the PCM. The immobilizer system will instantly start operating when you put the key into the key cylinder. The PCM triggers the code if it can’t recognize the immobilizer key inserted in the cylinder.
What are the symptoms of a P0513?
These are some of the common signs that you can observe when the code activates in your car.
- The check engine light illuminates
- The engine doesn’t start
- Illuminated anti-theft light
What causes a P0513 error code?
These are some common reasons why the code shows up in your car.
- Defective immobilizer key
- Bad electrical connection for immobilizer circuit parts
- Damaged immobilizer key antenna
- Defective immobilizer control unit

How to fix the P0513 code
These are some steps you can follow to fix the code.
- Try resetting the code. Then, your car will continue to operate normally. Keep checking whether the code reappears or the car has any trouble getting started.
- You must improve your car’s security or park somewhere safer if someone has tried to steal your car. But if the person failed in stealing your car, be sure that the security system is working properly.
- There seems to be an electrical issue if the code reappears or if you find it difficult to start your car. Visually check the key and the wire connected to the ignition. There’s damage if you see cracks on the key or key fob, so replace them with new parts.
- If there’s no visual damage, you can assume that the microprocessor’s battery is dead. Replace the battery or the whole fob.
How serious is the P0513 code?
The code is considered serious, as it implies an issue with the car’s anti-theft immobilizer system. This will result in your car not getting started. So, rectify the issue at the earliest.
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