P1631 2016 Chevrolet Silverado Code - Theft Deterrent Start Enable Signal Not Correct
Quick Answer
The P1631 diagnostic trouble code (DTC) for a 2016 Chevrolet Silverado indicates that the Theft Deterrent Start Enable Signal is not correct. Common causes include Faulty key fob or transponder chip, Wiring issues in the anti-theft system, Malfunctioning ignition switch. 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 2016 Chevrolet Silverado indicates Theft Deterrent Start Enable Signal Not Correct.
- Common causes
- Common causes include Faulty key fob or transponder chip, Wiring issues in the anti-theft system, Malfunctioning ignition switch.
- 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 2016 Chevrolet Silverado Description
The P1631 diagnostic trouble code (DTC) for a 2016 Chevrolet Silverado indicates that the Theft Deterrent Start Enable Signal is not correct. This code is related to the vehicle's anti-theft system, which is designed to prevent unauthorized individuals from starting the vehicle. When this code is triggered, it means that there is an issue with the signal that enables the vehicle to start, potentially leading to starting problems or the vehicle not starting at all.
Common Causes of P1631 2016 Chevrolet Silverado
- Faulty key fob or transponder chip
- Wiring issues in the anti-theft system
- Malfunctioning ignition switch
- Faulty Body Control Module (BCM)
- Issues with the Engine Control Module (ECM)
Symptoms of P1631 2016 Chevrolet Silverado
- Engine cranks but does not start
- Security light on the dashboard stays illuminated
- Vehicle starts intermittently
- Loss of power while driving
- Inability to start the vehicle at all
How to Fix P1631 2016 Chevrolet Silverado
- Check the key fob or transponder chip for any damage or malfunctions. Replace if necessary.
- Inspect the wiring in the anti-theft system for any breaks or corrosion. Repair or replace as needed.
- Test the ignition switch for proper functionality. Replace if faulty.
- Scan the BCM and ECM for any error codes related to the anti-theft system. Address any issues found.
- Clear the DTC and perform a relearn procedure for the anti-theft system to ensure proper operation.
Cost to Fix P1631 2016 Chevrolet Silverado
The typical repair costs for addressing a P1631 code in a 2016 Chevrolet Silverado can vary depending on the specific cause of the issue. Parts such as a new key fob or transponder chip, wiring repairs, ignition switch replacement, or BCM/ECM diagnostics and repairs can range from $100 to $500 or more. Labor costs at auto repair shops can range from $80 to $150 per hour, with the total repair bill likely falling in the range of $200 to $800 or more. It is advisable to consult with a trusted mechanic or dealership for a more accurate estimate based on the specific circumstances of the vehicle.
Tech Notes for P1631 2016 Chevrolet Silverado
-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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