P1631 Buick Code - Theft Deterrent Start Enable Signal Not Correct
Quick Answer
The P1631 Buick code indicates that there is a problem with the theft deterrent system's start enable signal. Common causes include Faulty theft deterrent system control module, Wiring issues in the theft deterrent system, Malfunctioning key fob. Severity is High - diagnose this code as soon as possible. Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.
- What it means
- P1631 Buick indicates Theft Deterrent Start Enable Signal Not Correct.
- Common causes
- Common causes include Faulty theft deterrent system control module, Wiring issues in the theft deterrent system, Malfunctioning key fob.
- Severity
- High - diagnose this code as soon as possible.
- Can I drive?
- Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.
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Code P1631 Buick Description
The P1631 Buick code indicates that there is a problem with the theft deterrent system's start enable signal. The theft deterrent system is designed to prevent unauthorized individuals from starting the vehicle. When this code is triggered, it means that the signal that allows the vehicle to start is not being received or is not correct. This can lead to the vehicle being unable to start or experiencing issues with starting intermittently.
Common Causes of P1631 Buick
- Faulty theft deterrent system control module
- Wiring issues in the theft deterrent system
- Malfunctioning key fob
- Issues with the ignition switch
- Faulty key reader
Symptoms of P1631 Buick
- Engine cranks but does not start
- Security light illuminated on the dashboard
- Vehicle starts intermittently
- Engine starts and then immediately shuts off
How to Fix P1631 Buick
- Diagnose the specific cause of the issue using a diagnostic scanner to read the trouble codes.
- Check the wiring and connections in the theft deterrent system for any signs of damage or corrosion.
- Test the key fob to ensure it is transmitting the correct signal to the vehicle.
- Replace the theft deterrent system control module if it is found to be faulty.
- Reset the vehicle's anti-theft system to clear the code and reprogram any necessary components.
Cost to Fix P1631 Buick
The cost of repairing a P1631 Buick code can vary depending on the specific cause of the issue. In general, the cost of parts for this repair can range from $100 to $500, with labor costs adding an additional $100 to $200. Overall, the total repair cost for this issue is likely to be between $200 and $700. However, it is essential to keep in mind that labor rates and part prices can vary significantly based on the location, vehicle make and model, and engine type. It is advisable to consult with a qualified mechanic or auto repair shop for a more accurate estimate based on your specific circumstances.
Tech Notes for P1631 Buick
-Insert the key, attempt to start the vehicle, and leave the key in the ON position.
In some vehicles, the Battery and Security light will blink for several seconds, and then shut off. Then the Security light will then remain ON. Leave the ignition ON until the Security light goes OFF. This will take more than 5 mins.
-When the Security light goes OFF, turn the ignition to the OFF position.
-Leave ignition OFF for 20 Seconds.
-Attempt to start the vehicle again and leave the key in the ON position.
-In some vehicles, the Battery and Security light will blink for several seconds, and then shut off. Then the Security light will then remain ON. Leave the ignition ON until the Security light goes OFF. This will take more than 5 mins.
-Turn the ignition to the OFF position for 20 Seconds.
-Attempt to start the vehicle again and leave the key in the ON position.
-In some vehicles, the Battery and Security light will blink for several seconds, and then shut off. Then the Security light will then remain ON. Leave the ignition ON until the Security light goes OFF. This will take more than 5 mins.
-Once this entire procedure has been completed (three times) your vehicle will start on the fourth attempt.
Note: Some vehicles perform the relearn in a different sequence. You may notice your security light, battery light, and abs light will alternate. Once the security light is left out of the sequence that is considered one step. Repeat the procedure two more times and on the fourth time, your vehicle will start.
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