Engine-Codes.com
Engine-Codes – Oldsmobile – P1629 Oldsmobile

P1629 Oldsmobile Code - Theft Deterrent Start Enable Signal Not Received

Quick Answer

The P1629 code for Oldsmobile vehicles indicates that the Theft Deterrent Start Enable signal is not being received by the engine control module (ECM). Common causes include Faulty ignition key or key fob, Malfunctioning key sensor or ignition switch, Wiring issues or loose connections in the Theft Deterrent System circuit. 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 Oldsmobile indicates Theft Deterrent Start Enable Signal Not Received.
Common causes
Common causes include Faulty ignition key or key fob, Malfunctioning key sensor or ignition switch, Wiring issues or loose connections in the Theft Deterrent System circuit.
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.
What is this?
Table of contents Created and updated by William Orellana on Aug 30, 2024
💬 Need more help? Ask Auto Expert for instant answers — it's free!
AutoCodes App

Fix Your Car Smarter

Try the New AutoCodes App!

Get complete OBDII diagnostics, repair solutions, and cost estimates, plus AI chat support on demand.

AutoCodes App on Google Play

Code P1629 Oldsmobile Description

The P1629 code for Oldsmobile vehicles indicates that the Theft Deterrent Start Enable signal is not being received by the engine control module (ECM). This signal is crucial for allowing the vehicle to start and run properly. The Theft Deterrent System is designed to prevent unauthorized individuals from starting the vehicle without the correct key or key fob. When the ECM does not receive the signal, it will disable the starting process, leading to issues with starting the engine. This can result in the vehicle not starting at all or stalling shortly after starting. It is essential to address this code promptly to ensure the vehicle's proper operation and security.

OBDII Code P1629 Oldsmobile - Theft Deterrent Start Enable Signal Not Received
P1629 Oldsmobile Code - Theft Deterrent Start Enable Signal Not Received

Common Causes of P1629 Oldsmobile

  1. Faulty ignition key or key fob
  2. Malfunctioning key sensor or ignition switch
  3. Wiring issues or loose connections in the Theft Deterrent System circuit
  4. ECM or PCM (Powertrain Control Module) failure
  5. Faulty immobilizer module

Symptoms of P1629 Oldsmobile

  1. Engine cranks but does not start
  2. Engine stalls shortly after starting
  3. Security light illuminated on the dashboard
  4. Inability to start the vehicle with the correct key or key fob
  5. Loss of power while driving

How to Fix P1629 Oldsmobile

  1. Check the ignition key or key fob for damage or malfunctions. Replace if necessary.
  2. Inspect the key sensor and ignition switch for proper operation. Repair or replace as needed.
  3. Check the wiring and connections in the Theft Deterrent System circuit for any issues. Repair any damaged wires or secure loose connections.
  4. Test the ECM and immobilizer module for faults. Replace if necessary.
  5. Clear the diagnostic trouble codes and reprogram the ECM to ensure proper communication with the Theft Deterrent System.

Cost to Fix P1629 Oldsmobile

The cost of repairing a P1629 code on an Oldsmobile vehicle can vary depending on the specific cause of the issue and the labor rates in your area. In general, the cost of parts for this repair could range from $100 to $500, while the labor cost could range from $100 to $300. Keep in mind that additional diagnostic fees may apply before the repair process begins. It is recommended to consult with a trusted mechanic or dealership to get an accurate estimate for your specific situation.

Need more information about the P1629 Oldsmobile code?

Need more information on how to fix the P1629 Oldsmobile code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the P1629 Oldsmobile code diagnosed by a professional: Find a repair shop in your area

About the author: William Orellana is a Master Mechanic and Mechanical Engineer with over 30 years of experience diagnosing and repairing vehicles. Learn more about his background.

Frequently Asked Questions about P1629 Oldsmobile Code

1. What are the common symptoms of OBDII code P1629 in an Oldsmobile related to the "Theft Deterrent Start Enable Signal Not Received"?

- Common symptoms include the vehicle not starting, the security light staying on or flashing, and the engine stalling shortly after starting.

2. What are the possible causes of OBDII code P1629 in an Oldsmobile?

- The code P1629 can be caused by issues with the ignition key, the ignition lock cylinder, a faulty theft deterrent module, or wiring problems related to the anti-theft system.

3. How can I diagnose the cause of OBDII code P1629 in my Oldsmobile?

- To diagnose the issue, you can start by checking the key for damage, ensuring the key is programmed correctly, inspecting the ignition lock cylinder, and testing the theft deterrent module and related wiring for any faults.

4. Can I still drive my Oldsmobile with OBDII code P1629?

- It is not recommended to drive your vehicle with the code P1629 present, as it can lead to starting issues and potential engine stalling. It is best to address the problem promptly.

5. How can I reset OBDII code P1629 in my Oldsmobile?

- Resetting the code typically involves using an OBDII scanner to clear the code after addressing the underlying cause, such as fixing issues with the anti-theft system components.

6. Is it possible to repair OBDII code P1629 in an Oldsmobile by myself?

- While some DIY enthusiasts may be able to address simple causes of the code, diagnosing and repairing issues related to the theft deterrent system may require specialized tools and knowledge, making it best left to professionals.

7. Will OBDII code P1629 in my Oldsmobile cause permanent damage if not fixed immediately?

- Failure to address the code P1629 promptly can potentially lead to more severe issues like complete engine immobilization or permanent damage to the anti-theft system components.

8. Are there any preventive measures to avoid OBDII code P1629 in an Oldsmobile?

- Regularly maintaining your vehicle, ensuring proper programming of keys, and promptly addressing any issues with the theft deterrent system can help prevent the occurrence of code P1629.

9. How long does it typically take to repair OBDII code P1629 in an Oldsmobile?

- The repair time for code P1629 can vary depending on the underlying cause and the complexity of the repairs needed, ranging from a few hours to a day or more in some cases.

10. Can a faulty battery or alternator cause OBDII code P1629 in an Oldsmobile?

- While a faulty battery or alternator can cause starting issues, they are not typically direct causes of code P1629. It is important to diagnose the specific anti-theft system components to address the code correctly.

Discuss the causes and fixes for P1629 Oldsmobile OBDII Code

Submit a New Comment

Code P1629 Oldsmobile comments

No comments found for this page.