P1629 Code - Theft Deterrent Start Enable Signal Not Received
Quick Answer
The P1629 code indicates that the theft deterrent system in the vehicle is not receiving the necessary signal to allow the engine to start. Common causes include Faulty ignition key or key fob, Issues with the immobilizer system, Wiring or connection problems in the theft deterrent system. 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 indicates Theft Deterrent Start Enable Signal Not Received.
- Common causes
- Common causes include Faulty ignition key or key fob, Issues with the immobilizer system, Wiring or connection problems in the theft deterrent system.
- 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 P1629 Description
The P1629 code indicates that the theft deterrent system in the vehicle is not receiving the necessary signal to allow the engine to start. This could be due to a malfunction in the system itself or a communication issue between the various components involved. The theft deterrent system is designed to prevent unauthorized access to the vehicle and is crucial for the vehicle's security. When this signal is not received, the engine may not start, leaving the vehicle immobilized.
Common Causes of P1629
- Faulty ignition key or key fob
- Issues with the immobilizer system
- Wiring or connection problems in the theft deterrent system
- Faulty ignition switch
- Defective Body Control Module (BCM)
Symptoms of P1629
- Engine cranks but does not start
- Security light illuminated on the dashboard
- Inability to start the vehicle with the key
- Anti-theft system warning message displayed on the instrument panel
How to Fix P1629
- Check the ignition key and key fob for proper functionality
- Inspect the immobilizer system and ensure it is working correctly
- Verify the wiring and connections in the theft deterrent system for any damage or loose connections
- Test the ignition switch for proper operation
- If necessary, replace the Body Control Module (BCM)
Cost to Fix P1629
The cost of repairing a P1629 code can vary depending on the specific cause of the issue and the parts that need to be replaced. On average, the repair costs for this issue can range from $100 to $500, including parts and labor. The specific diagnosis time and labor rates at auto repair shops can vary, so it is recommended to inquire locally for a more accurate estimate.
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Code P1629 Information for Specific Makes
- P1629 Audi — CAN Data Bus Cruise Control No Signal
- P1629 Buick — Theft Deterrent Start Enable Signal Not Received
- P1629 Cadillac — Theft Deterrent Start Enable Signal Not Received
- P1629 Chevrolet — Theft Deterrent Start Enable Signal Not Received
- P1629 GMC — Theft Deterrent Start Enable Signal Not Received
- P1629 Hyundai — Condenser Fan Circuit High
- P1629 Oldsmobile — Theft Deterrent Start Enable Signal Not Received
- P1629 Pontiac — Theft Deterrent Start Enable Signal Not Received
- P1629 Saturn — Theft Deterrent Start Enable Signal Not Received
- P1629 Volkswagen — CAN Data Bus Cruise Control No Signal
Frequently Asked Questions about P1629 Code
1. What are the common symptoms of OBDII code P1629 (Theft Deterrent Start Enable Signal Not Received)?
When this code is triggered, you may experience issues such as the engine not starting, the security light staying on, or the vehicle going into a no-start condition.
2. What can cause OBDII code P1629 to appear?
The most common causes of this code include a faulty ignition key, a problem with the key transponder, issues with the ignition lock cylinder, or a malfunction in the theft deterrent module.
3. How serious is OBDII code P1629?
This code is considered serious as it can prevent the vehicle from starting or cause it to stall unexpectedly. It is recommended to address this issue promptly to avoid being stranded.
4. How can I diagnose OBDII code P1629?
Diagnosing this code typically involves checking the ignition key, transponder, ignition lock cylinder, and theft deterrent module for any faults. A professional diagnostic scan tool may also be needed.
5. Can I drive my vehicle with OBDII code P1629 present?
It is not advisable to drive your vehicle with this code active, as it may lead to unexpected stalling or a no-start condition. It is best to address the issue before driving the vehicle.
6. How can I repair OBDII code P1629?
Repairing this code often involves replacing a faulty ignition key, fixing issues with the key transponder, repairing or replacing the ignition lock cylinder, or addressing problems with the theft deterrent module.
7. Can a DIYer fix OBDII code P1629?
While some aspects of diagnosing and repairing this code may be within reach of an experienced DIYer, it is recommended to seek professional help due to the complexity of the anti-theft system.
8. Will disconnecting the battery reset OBDII code P1629?
Disconnecting the battery may temporarily clear the code, but if the underlying issue is not addressed, the code is likely to return once the vehicle is driven again.
9. How much does it cost to fix OBDII code P1629?
The cost of fixing this code can vary depending on the specific cause of the issue and the labor rates of the repair shop. It is best to get a diagnostic assessment to determine the exact cost.
10. How long does it take to repair OBDII code P1629?
The repair time for this code can vary depending on the cause of the issue and the availability of parts. Some repairs may be completed in a few hours, while more complex issues may take longer to resolve.
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