P1629 Chevrolet Code - Theft Deterrent Start Enable Signal Not Received
Quick Answer
The Engine Control Module (ECM), the Powertrain Interface Module (PIM), and the Body Control Module (BCM) are an integral part of the vehicle theft deterrent system. Common causes include Deterrent key not programmed to vehicle, Faulty Deterrent key, Faulty 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
- P1629 Chevrolet indicates Theft Deterrent Start Enable Signal Not Received.
- Common causes
- Common causes include Deterrent key not programmed to vehicle, Faulty Deterrent key, Faulty 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.
Code P1629 Chevrolet Description
1.When the ignition is turned ON or the door is unlocked by remote key the BCM and the key exchange security data to verify the correct key is used.
2.Once the correct key has been confirmed and the ignition is turned ON, the PIM and BCM exchange data to confirm the correct BCM and PIM are being used.
3.Once the correct key, BCM, and PIM are confirmed, the PIM and ECM exchange data to allow the vehicle to start.
4.The data exchange processes conducted use various encrypted data exchanges between each of the devices.
What are the Possible Causes of the DTC P1629 Chevrolet?
- Deterrent key not programmed to vehicle
- Faulty Deterrent key
- Faulty ignition switch
- Poor electrical connection for Deterrent circuit components
How to Fix the DTC P1629 Chevrolet?
Review the 'Possible Causes' above and visually examine the corresponding wiring harness and connectors. Check for damaged components and inspect connector pins for signs of being broken, bent, pushed out, or corroded.
What is the Cost to Diagnose the Code?
Labor: 1.0
To diagnose the P1629 Chevrolet code, it typically requires 1.0 hour of labor. Rates vary by location, vehicle, and shop. Many shops charge between $80–$150 per hour; dealerships and metro areas may be higher, independents may be lower.
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Frequently Asked Questions about P1629 Chevrolet Code
1. What are the common symptoms of OBDII code P1629 on a Chevrolet related to the Theft Deterrent Start Enable Signal Not Received?
- Common symptoms may include the vehicle failing to start, the security light staying on, or intermittent starting issues.
2. What can cause the OBDII code P1629 on a Chevrolet?
- Possible causes include a faulty ignition switch, a defective Passlock sensor, wiring issues, or a problem with the Body Control Module (BCM).
3. How can I diagnose the OBDII code P1629 on my Chevrolet?
- Diagnosing this code typically involves checking the ignition switch, Passlock sensor, and BCM for proper operation. A scan tool can help identify the specific issue.
4. Can I still drive my Chevrolet with the OBDII code P1629 present?
- It is not recommended to drive the vehicle with this code active, as it may result in starting issues and potentially leave you stranded.
5. How can I repair OBDII code P1629 on my Chevrolet?
- Repair options may include replacing the ignition switch, Passlock sensor, or repairing any wiring issues. A professional diagnostic may be necessary for an accurate repair.
6. Are there any temporary fixes for the OBDII code P1629 on a Chevrolet?
- Resetting the system by disconnecting the battery for a few minutes may temporarily clear the code, but it is not a permanent solution.
7. Can a DIY enthusiast repair the OBDII code P1629 on a Chevrolet?
- While some basic troubleshooting can be done by DIY enthusiasts, diagnosing and repairing this code may require advanced tools and expertise, so professional help is recommended.
8. How much does it cost to fix the OBDII code P1629 on a Chevrolet?
- The cost of repairs can vary depending on the specific issue causing the code. It is best to get a diagnostic from a professional to determine the exact cost.
9. Can the OBDII code P1629 on a Chevrolet reset on its own?
- In some cases, the code may reset on its own if the underlying issue is intermittent. However, it is recommended to diagnose and repair the problem to prevent future occurrences.
10. Is the OBDII code P1629 specific to Chevrolet vehicles?
- While P1629 is a generic OBDII code related to the theft deterrent system, the specific causes and repair procedures may vary between different vehicle makes and models.
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